CN105548977B - A kind of digital array secondary radar numeral T/R component states detection method and device - Google Patents
A kind of digital array secondary radar numeral T/R component states detection method and device Download PDFInfo
- Publication number
- CN105548977B CN105548977B CN201510925306.2A CN201510925306A CN105548977B CN 105548977 B CN105548977 B CN 105548977B CN 201510925306 A CN201510925306 A CN 201510925306A CN 105548977 B CN105548977 B CN 105548977B
- Authority
- CN
- China
- Prior art keywords
- antenna element
- phase
- amplitude
- digital
- processor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention relates to secondary radar field, especially a kind of digital array secondary radar numeral T/R component states detection method and device.The problem of present invention exists for prior art, there is provided a kind of digital array secondary radar numeral T/R component states detection method and device, the key position of digital T/R components, collect effective information, complete detection is realized to the health status of digital T/R components.It is that digital T/R components send fixed prefix and incremental number when electricity is completed but when being introduced into normal traffic pattern on digital T/R components when communication check module detects in the present invention；Whether the fixed prefix of processor detection is wrong with incremental number and counts error number, if error number is more than the threshold value that malfunctions, judges that communication has problem；When error number is less than or equal to error threshold value；Otherwise realizing that digital T/R components communicate subsequent detection according to radio-frequency channel detection module and antenna detection module cooperation.
Description
Technical field
The present invention relates to secondary radar field, especially a kind of digital array secondary radar numeral T/R component states detection side
Method and device.
Background technology
Digital array secondary radar system is designed using distributed digital T/R components, multichannel antenna a period of time transmitting-receiving, due to number
Word T/R components include many active radio frequency passages, and over time, antenna element, the state of radio-frequency channel may occur
Change, the reliability and accuracy of fiber optic data communication are also required to be guaranteed, and the present invention collects by all kinds of means from the angle of system
The effective information of the key position of digital T/R components, the detection to the health status of digital T/R components reach comprehensive covering.
The content of the invention
The technical problems to be solved by the invention are：The problem of existing for prior art, there is provided a kind of Digital Arrays are secondary
Digital radar T/R component states detection method and device, the key position of digital T/R components, effective information is collected, to digital T/
The health status of R components realizes complete detection.
The technical solution adopted by the present invention is as follows：
A kind of digital array secondary radar numeral T/R component states detection methods include：
Step 1：When electricity is completed but is introduced into normal traffic pattern on digital T/R components, digital T/R components send fixed word
Head and incremental number；Whether the fixed prefix of processor detection is wrong with incremental number and counts error number, if error number is more than
Malfunction threshold value, then judges that communication has problem；When malfunctioning, number is less than or equal to the threshold value that malfunctions, then performs step 2；
Step 2：For digital T/R components in normal traffic pattern, digital T/R components send signal noise or secondary radar
Answer signal to processor, it is assumed that signal noise amplitude and the answer signal amplitude statistics average of secondary radar are in the first statistics
When between threshold value and the second statistical threshold, the answer signal that L seconds digital T/R component of statistics sends secondary radar gives processor number
According to amount；Judge the relation of the first statistical threshold, the second statistical threshold and data volume, judge that optical-fibre communications whether there is problem, if
Problem be present, then it represents that communication has problem；Otherwise, step 3 is performed；
Step 3：Processor sends transmitting data D1-D5 by optical fiber to digital T/R components, and the amplitude of this transmitting data can
Control the transmission power of digital T/R components；Digital T/R components are by transmitting chain by the way that data are corresponding launches work(with transmitting
Rate, this coupled signal is then received and parsed through by receives link, then processor is judged by coupled signal range value J1-J5
Digital T/R assembly radio-frequencies passage whether normal communication, if digital T/R components are unable to normal communication, then it represents that digital T/R components lead to
Problem be present in news；Otherwise, step 4 is performed；Wherein transmission power D1-D5 and digital T/R components transmission power corresponding relation is：
Transmission power D1-D5 respectively should be in following scope respectively for 47dbm, 44dbm, 41dbm, 38dbm, 35dbm, then J1-J5
4000-3000,2000-1500,1000-750,500-375,250-187.5；
Step 4：Assuming that digital array secondary radar antenna element number is N, processor control is connected with digital T/R components
The 2K antenna element transmission signal, while 2K-1 and the 2K+1 antenna element that control is connected with digital T/R components
Reception signal；Digital T/R components will be transmitted to processor after the signal resolution received by optical fiber, obtain between odd number a period of time
Reception amplitude and phase relation；After processor collects the reception amplitude between odd number antenna element and phase and it is normalized
Processing；Similarly, the 2K-1 antenna element transmission signal that processor control is connected with digital T/R components, while control and count
2K-2 and the 2K antenna element reception signal of word T/R components connection, the signal resolution that digital T/R components will receive
Processor is transmitted to by optical fiber afterwards, obtains reception amplitude and the phase relation between even number a period of time；Processor is by even number antenna array
After reception amplitude and phase between son are collected and it is normalized；Then processor controls the 3rd antenna element transmitting
Signal, simultaneous processor controls first antenna element, second antenna element reception signal, due to odd number, even number antenna array
The amplitude and phase of son it has been determined that on the basis of odd number, respective first antenna element of even number antenna element, determine odd number and
Amplitude and phase between even number antenna are the amplitude and phase relation of all antenna element；Wherein 0<K<N/2；
Step 5：Repeat step 4, processor obtain the two groups of transmission power levels and phase value of each antenna element, judge
Transmission power level and phase value and the relation of corresponding setting value, judge whether antenna element is normal.
Further, the step 2 specifically includes：
Step 21：For digital T/R components in normal traffic pattern, digital T/R components send signal noise or secondary thunder
The answer signal reached is to processor, it is assumed that signal noise amplitude and answers signal amplitude average statistical in the first statistical threshold and the
When between two statistical thresholds, L seconds digital T/R component of statistics is sent to processor data amount；Wherein the first statistical threshold is less than
Second statistical threshold；
Step 22：Data volume is less than the first statistical threshold or quantity is more than the second statistical threshold, then judges digital T/R groups
Problem be present in part optical-fibre communications；When the first statistical threshold<Data volume<Second statistical threshold, then carry out step 3.
Further, the step 3 specifically includes：
Step 31：Processor sends transmitting data D1-D5 by optical fiber to digital T/R components, the amplitude of this transmitting data
It can control the transmission power of digital T/R components；Digital T/R components will launch transmission power corresponding to data by transmitting chain and send out
It is shot out, coupler passes to after transmission power is coupled receives link, and the receives link receives coupled signal, and parses this
Coupled signal range value is J1-J5, and coupled signal range value J1-J5 is transmitted to processor by digital T/R components；
Step 32：Processor carries out coupled signal range value J1-J5 and coupled signal range value theoretical value T1-T5 respectively
Compare；When any one value in coupled signal range value J1-J5 exceeds corresponding coupled signal range value theoretical value T1-T5's
± 20% amplitude range, then it is assumed that radio-frequency channel has problem；When no one of coupled signal range value J1-J5 beyond pair
The coupled signal range value theoretical value T1-T5 answered ± 20% amplitude range, and (J1/T1+J2/T2+J3/T3+J4/T4+
J5/T5)/5 it is more than 1.1 or less than 0.9, then it is assumed that radio-frequency channel has problem；In addition, digital T/R assembly radio-frequencies lead to
Road is judged to normally, performing step 4.
Further, after processor collects the reception amplitude between odd number antenna element and phase in the step 4 simultaneously
Detailed process, which is normalized, is：Assuming that when the second antenna element is launched, the reception amplitude and phase in first antenna a period of time
Respectively P2 1And H2 1, wherein acceptance latitude and phase subscript represent transmitting a period of time position, subscript represent receive a period of time position；
The reception amplitude and phase in third antenna a period of time are respectively P2 3And H2 3, then setting first antenna element reception amplitude and
Phase is respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase are respectively P2 3/P2 1And H2 3-H2 1；The like, then
2K-1 reception amplitude and phase relation expression is specially (P2 3/P2 1)*(P4 5/P4 3)*…*(P2K-2 2K-1/P2K-2 2K-3) and
(H2 3-H2 1)+(H4 5-H4 3)+…+(H 2K-2 2K-1-H 2K-2 2K-3)；
After processor collects the reception amplitude between even number antenna element and phase in the step 4 and it is normalized
Detailed process is：Assuming that when third antenna a period of time launches, the reception amplitude and phase of the second antenna element are respectively P3 2And H3 2
(being represented to launch a period of time position with subscript, subscript represents to receive a period of time position), the reception amplitude and phase point of the 4th antenna element
Wei not P3 4And H3 4, then the reception amplitude and phase of first antenna element of setting be respectively 1 and 0, then third antenna a period of time
Reception amplitude and phase are respectively P3 4/P3 2And H3 4-H3 2；The like, then 2K reception amplitude and phase relation expression are specific
For (P3 4/P3 2)*(P5 6/P5 4)*…*(P2K-1 2K/P2K-1 2K-2) and (H3 4-H3 2)+(H5 6-H5 4)+…+(H2K-1 2K-H2K-1 2K-2)；
In the step 4 processor control first antenna element, second antenna element reception signal, due to odd number,
The amplitude and phase of even number antenna element it has been determined that on the basis of odd number, respective first antenna element of even number antenna element,
Determine amplitude and phase relation the specific implementation process of the amplitude and i.e. all antenna element of phase between odd and even number antenna
It is：Assuming that the 3rd antenna element transmission signal, it is respectively P ＇ that first antenna element, which receives amplitude and phase,3 1With H ＇3 1,
Two antenna element reception signal P ＇3 2With H ＇3 2, because first and second antenna element and the 3rd path existing for antenna element
Phase difference is HX, amplitude difference PXIf the amplitude and phase invariant of even number antenna element, the amplitude and phase in odd number a period of time become
For：PX* (H ＇3 2/ H ＇3 1)*(P2 3/P2 1)*(P4 5/P4 3)*…*(P2K-2 2K-1/P2K-2 2K-3) and HX+ (H ＇3 2- H ＇3 1)+(H2 3-H2 1)+
(H4 5-H4 3)+…+(H2K-2 2K-1-H2K-2 2K-3)。
Further, the step 5 is specially：Repeat step 4, processor obtain two groups of transmitting work(of each antenna element
Rate value and phase value, by by the transmission power level of each antenna element compared with corresponding setting value, if any antenna
The transmission power level in a period of time is less than corresponding setting value, then this antenna element has problem；Simultaneously by the phase difference detected twice with
The phase difference of corresponding setting is compared, if the phase difference value of both sides detection is less than the phase difference value of corresponding setting, this antenna
Problem be present；Otherwise, antenna element communication is normal.
A kind of digital array secondary radar numeral T/R component states detection means includes：
Digital T/R components：When being completed for upper electricity but being introduced into normal traffic pattern, digital T/R components send fixed word
Head and incremental number；
Processor：It is whether wrong and count error number for detecting fixed prefix and incremental number, if error number is more than
Malfunction threshold value, then judges that communication has problem；When error number is less than or equal to error threshold value, digital T/R components send signal and made an uproar
The answer signal of sound or secondary radar assumes the answer signal width of signal noise amplitude and secondary radar to processor, processor
When spending average statistical between the first statistical threshold and the second statistical threshold, L seconds digital T/R component of statistics sends secondary radar
Answer signal give processor data amount；Judge the relation of the first statistical threshold, the second statistical threshold and data volume, judge optical fiber
Communication whether there is problem, if problem be present, then it represents that communication has problem；Otherwise, processor gives digital T/R groups by optical fiber
Part sends transmitting data D1-D5, the transmission power of the amplitude-controllable numeral T/R components of this transmitting data；Digital T/R components lead to
Cross transmitting chain by with the corresponding transmission power of transmitting data, this coupled signal is then received and parsed through by receives link,
Then processor by coupled signal range value J1-J5 judge digital T/R assembly radio-frequencies passage whether normal communication, if digital T/
R components are unable to normal communication, then it represents that digital T/R components communication has problem；Otherwise, it is assumed that digital array secondary radar antenna array
Sub- number is N, the 2K antenna element transmission signal that processor control is connected with digital T/R components, while control and numeral
2K-1 and the 2K+1 antenna element reception signal of T/R components connection；The signal resolution that digital T/R components will receive
Processor is transmitted to by optical fiber afterwards, obtains reception amplitude and the phase relation between odd number a period of time；Processor is by odd number antenna array
After reception amplitude and phase between son are collected and it is normalized；Similarly, processor control is connected with digital T/R components
The 2K-1 antenna element transmission signal, while the 2K-2 that is connected with digital T/R components of control is individual and the 2K antenna array
Sub- reception signal, digital T/R components will be transmitted to processor after the signal resolution received by optical fiber, obtain between even number a period of time
Reception amplitude and phase relation；After processor collects the reception amplitude between even number antenna element and phase and carry out normalizing
Change is handled；Then processor controls the 3rd antenna element transmission signal, and simultaneous processor controls first antenna element, second
Individual antenna element reception signal, due to odd number, the amplitude of even number antenna element and phase it has been determined that with odd number, even number antenna array
On the basis of respective first antenna element of son, the amplitude and i.e. all antenna element of phase between odd and even number antenna are determined
Amplitude and phase relation；Then processor obtains the two groups of transmission power levels and phase value of each antenna element, judges to send out
The relation of performance number and phase value with corresponding setting value is penetrated, judges whether antenna element is normal；Wherein transmission power D1-D5 with
The transmission power corresponding relation of digital T/R components is：Transmission power D1-D5 respectively for 47dbm, 44dbm, 41dbm, 38dbm,
35dbm, then J1-J5 respectively should be in following scope 4000-3000,2000-1500,1000-750,500-375,250-187.5.
Further, the digital T/R components are in normal traffic pattern, digital T/R components send signal noise or
The answer signal of secondary radar is to processor, it is assumed that signal noise amplitude and the answer signal amplitude statistics average of secondary radar exist
When between the first statistical threshold and the second statistical threshold, L seconds digital T/R components of statistics send the answer signal of secondary radar to
Processor data amount；Judge the relation of the first statistical threshold, the second statistical threshold and data volume, judge that optical-fibre communications whether there is
Problem detailed process is：
Step 21：For digital T/R components in normal traffic pattern, digital T/R components send signal noise or secondary thunder
The answer signal reached is to processor, it is assumed that signal noise amplitude and answers signal amplitude average statistical in the first statistical threshold and the
When between two statistical thresholds, L seconds digital T/R component of statistics is sent to processor data amount；Wherein the first statistical threshold is less than
Second statistical threshold；
Step 22：Data volume is less than the first statistical threshold or quantity is more than the second statistical threshold, then judges digital T/R groups
Problem be present in part optical-fibre communications；Then when the first statistical threshold<Data volume<Second statistical threshold, digital T/R components optical-fibre communications is just
Often.
Further, the processor sends transmitting data D1-D5 by optical fiber to digital T/R components, this transmitting data
Amplitude-controllable numeral T/R components transmission power；Digital T/R components are passed through corresponding with transmitting data by transmitting chain
Transmission power, this coupled signal is then received and parsed through by receives link, then processor passes through coupled signal range value J1-
J5 judges whether normal communication detailed process is digital T/R assembly radio-frequencies passage：
Step 31：Processor sends transmitting data D1-D5 by optical fiber to digital T/R components, the amplitude of this transmitting data
It can control the transmission power of digital T/R components；Digital T/R components will launch transmission power corresponding to data by transmitting chain and send out
It is shot out, coupler passes to after transmission power is coupled receives link, and the receives link receives coupled signal, and parses this
Coupled signal range value is J1-J5, and coupled signal range value J1-J5 is transmitted to processor by digital T/R components；
Step 32：Processor carries out coupled signal range value J1-J5 and coupled signal range value theoretical value T1-T5 respectively
Compare；When any one value in coupled signal range value J1-J5 exceeds corresponding coupled signal range value theoretical value T1-T5's
± 20% amplitude range, then it is assumed that radio-frequency channel has problem；When no one of coupled signal range value J1-J5 beyond pair
The coupled signal range value theoretical value T1-T5 answered ± 20% amplitude range, and (J1/T1+J2/T2+J3/T3+J4/T4+
J5/T5)/5 it is more than 1.1 or less than 0.9, then it is assumed that radio-frequency channel has problem；In addition, digital T/R assembly radio-frequencies lead to
Road is determined as normally.
Further, after the processor collects the reception amplitude between odd number antenna element and phase and normalizing is carried out
Changing processing detailed process is：Assuming that when the second antenna element is launched, the reception amplitude and phase in first antenna a period of time are respectively P2 1
And H2 1, wherein acceptance latitude and phase subscript represent transmitting a period of time position, subscript represent receive a period of time position；Third antenna battle array
The reception amplitude and phase of son are respectively P2 3And H2 3, then the reception amplitude and phase of first antenna element of setting are respectively 1
With 0, then the reception amplitude in third antenna a period of time and phase are respectively P2 3/P2 1And H2 3-H2 1；The like, then 2K-1 reception
Amplitude and phase relation expression are specially (P2 3/P2 1)*(P4 5/P4 3)*…*(P2K-2 2K-1/P2K-2 2K-3) and (H2 3-H2 1)+(H4 5-
H4 3)+…+(H2K-2 2K-1-H2K-2 2K-3)；
After the processor collects the reception amplitude between even number antenna element and phase and it is normalized specifically mistake
Cheng Shi：Assuming that when third antenna a period of time launches, the reception amplitude and phase of the second antenna element are respectively P3 2And H3 2(use subscript
Transmitting a period of time position is represented, subscript represents to receive a period of time position), the reception amplitude and phase of the 4th antenna element are respectively P3 4With
H3 4, then the reception amplitude and phase of first antenna element of setting are respectively the reception amplitude of 1 and 0, then third antenna a period of time
It is respectively P with phase3 4/P3 2And H3 4-H3 2；The like, then 2K reception amplitude and phase relation expression are specially (P3 4/
P3 2)*(P5 6/P5 4)*…*(P2K-1 2K/P2K-1 2K-2) and (H3 4-H3 2)+(H5 6-H5 4)+…+(H2K-1 2K-H2K-1 2K-2)；
The processor controls first antenna element, second antenna element reception signal, due to odd number, even number antenna
The amplitude and phase in a period of time determine odd number it has been determined that on the basis of odd number, respective first antenna element of even number antenna element
Amplitude and phase between even number antenna be all antenna element amplitude and phase relation specific implementation process be：Assuming that the
Three antenna element transmission signals, it is respectively P ＇ that first antenna element, which receives amplitude and phase,3 1With H ＇3 1, second antenna array
Sub- reception signal P ＇3 2With H ＇3 2, because first and second antenna element and the 3rd difference of path phase existing for antenna element are HX,
Amplitude difference is PXIf the amplitude and phase invariant of even number antenna element, the amplitude and phase in odd number a period of time are changed into：PX* (H ＇3 2/
H ＇3 1)*(P2 3/P2 1)*(P4 5/P4 3)*…*(P2K-2 2K-1/P2K-2 2K-3) and
HX+ (H ＇3 2- H ＇3 1)+(H2 3-H2 1)+(H4 5-H4 3)+…+(H2K-2 2K-1-H2K-2 2K-3)
Further, the processor obtains the two groups of transmission power levels and phase value of each antenna element, judges to send out
The relation of performance number and phase value with corresponding setting value is penetrated, judges that the whether normal detailed process of antenna element is：Processor obtains
To the two groups of transmission power levels and phase value of each antenna element, by by the transmission power level of each antenna element with it is corresponding
Setting value is compared, if the transmission power level of any antenna element is less than corresponding setting value, this antenna element has problem；
Simultaneously by the phase difference detected twice compared with the phase difference of corresponding setting, if the phase difference value of both sides detection is less than corresponding
The phase difference value of setting, then this antenna problem be present；Otherwise, antenna element communication is normal.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
The present invention compared with prior art the advantages of be：As a kind of digital array secondary radar numeral T/R components health
The detection method of state, realize the critical link detection of digital T/R component operations, fault detect overall scientific, to numeral
The fault location and rapid-maintenance of T/R components have very important effect.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, summary), unless specifically stated otherwise,
Replaced by other equivalent or with similar purpose alternative features.I.e., unless specifically stated otherwise, each feature is a series of
An example in equivalent or similar characteristics.
The present apparatus includes：Fiber optic communication detection module, radio-frequency channel detection module, antenna detection module.
(1) light is completed in the detection such as fiber optic communication detection module, the error rates of data transmitted by the break-make to optical fiber, optical fiber
The detection of fiber communication health status；
(2) radio-frequency channel detection module is complete by being detected to digital array secondary radar numeral T/R components transmission power inside
Into the detection of radio-frequency channel health status；
(3) antenna detection module is completed by being coupled transmission power digital array secondary radar numeral T/R element antennas
The detection of digital array secondary radar numeral T/R element antenna health status.
The course of work is：(1) fiber optic communication detection module
The detections such as the error rates of data that the module is transmitted by the optical signal, the optical fiber that are transmitted to optical fiber are completed fiber optic communication and are good for
The detection of health state：
Data are exchanged, it is necessary to which a kind of method is come detection fiber by fiber optic communication between processor and digital T/R components
Communication whether there is problem.In two steps, a step is that electricity is completed but is introduced into regular traffic on digital T/R components for detection
During pattern, digital T/R components send " fixed prefix BC0000BC+ is incrementally counted " to processor, wherein incremental number is since 0,
The maximum number of incremented by successively to 92, whether the fixed prefix of processor monitoring is wrong with incremental number and counts error number, if going out
Wrong number is more than setting value, then judges that fiber optic communication has problem, if error number is less than or equal to setting value, detection enters second
Individual step.Second step be digital T/R components in normal traffic pattern, now digital T/R components are sent to processor
Data are the answer signal of signal noise or secondary radar, and signal noise accounting is less than some value, and most of is signal noise, letter
Number noise amplitude average meets the statistical law of thermal noise, with reference to the amplitude rule and accounting of the answer signal of secondary radar, two
The amplitude statistics average of person is between A and B, wherein A<B.Accordingly, count L seconds digital T/R component and be sent to place
The data mean value for managing device is C, such as C<A or C>B, judge that fiber optic communication has problem, if A<C<B, then have no problem, then lead to
Radio-frequency channel detection module is crossed to be detected.
(2) radio-frequency channel detection module
The module is detected by being coupled to digital array secondary radar numeral T/R components transmission power, is completed radio-frequency channel and is good for
The detection of health state：
In order to be detected to digital T/R assembly radio-frequencies passage health status, coupling is devised in digital T/R component internals
Device, the thinking of this module are the transmission powers by setting digital T/R components, emitted energy are coupled into coupler, and pass through
The coupled signal of coupler is parsed and judges whether digital T/R assembly radio-frequencies passage is healthy by receives link, due to above-mentioned
Process covers transmitting and receives link, and sets multi-stage launch power, and detection science is feasible, and specific implementation step is as follows.
Processor sends transmitting data by optical fiber to digital T/R components, the amplitude-controllable numeral T/R of this transmitting data
The transmission power of component, in order to accurately detect the state of radio-frequency channel, by transmission power setting be 5 grades, according to transmitting data and
The corresponding relation of transmission power, it is D1-D5 by transmitting data setting, after detection starts, digital T/R components receive transmitting data
D1, and launched signal by transmitting chain, coupled signal is transmitted to receives link and parses amplitude by coupler is
J1 is transmitted to processor by J1, digital T/R components, and processor controls the inspection of the other grade transmission powers of digital T/R components completion again
Survey, it is respectively J1-J5 to receive the amplitude that digital T/R components are transmitted through coming.Processor stores the theoretical value of this amplitude, it is assumed that is
T1-T5, in the case of two kinds below, judge that the radio-frequency channel of digital T/R assembly radio-frequencies passage has problem.The first is J1-
Any one value in J5 exceed corresponding T1-T5 up and down 20% amplitude range, it is assumed that J1 goes beyond the scope i.e. J1>1.2T1
Or J1<0.8T1, then it is assumed that radio-frequency channel has problem, and the first is that neither one in J1-J5 exceeds corresponding T1-T5
Up and down 20% amplitude range, when entirety is beyond 10% amplitude range, i.e. (J1/T1+J2/T2+J3/T3+J4/T4+
J5/T5)/5 it is more than 1.1 or less than 0.9, is also considered as radio-frequency channel and problem be present.In addition, digital T/R assembly radio-frequencies lead to
Road is determined as normally.If digital T/R assembly radio-frequencies passage is judged to normally, being detected by antenna detection module.
(3) antenna detection module
Antenna element is connected by RF cable with digital T/R components, and processor can control digital T/R components by optical fiber
Pass through antenna element receiving and transmitting signal.
It is N to assume initially that digital array secondary radar antenna element number, and start to process device controls digital T/R components pair and its
Connected antenna element 2 is launched, and is controlled digital T/R components to coupled antenna element 1 and 3 while is received, similarly, successively
It is incremented by, controls the same power emissions of antenna element 2K for even number, control digital T/R components to coupled antenna element 2K-1
Received simultaneously with 2K+1, wherein 0<K<N/2, processor is transmitted to by optical fiber after the signal resolution that digital T/R components are received,
After processor collects the reception amplitude between all odd number antenna element and phase and it is normalized as follows：Assuming that day
When linear array 2 is launched, the reception amplitude and phase of antenna element 1 are respectively P1 and H1, the reception amplitude and phase of antenna element 3
Respectively P3 and H3, then the reception amplitude and phase of setting antenna element 1 are respectively the reception width of 1 and 0, then antenna element 3
Degree and phase are respectively P3/P1 and H3-H1, by this rule successively normalizing, then can be obtained between all odd number antenna element
Reception amplitude and phase relation.Similarly, antenna element 2K-1 launches, and antenna element 2K-2 and 2K are received simultaneously, wherein 0<K<N/
2, reception amplitude and phase relation between even number a period of time are now obtained, antenna element 1 is launched, and antenna element 2,3 receives simultaneously,
Due to odd number, the amplitude of even number antenna element and phase it has been determined that taking antenna element 2 and 3 respectively as even number and odd number day
The benchmark of linear array, finally can determine that the amplitude and phase of the amplitude and i.e. all antenna element of phase between odd and even number antenna
Position relation.
Similarly, processor controls digital T/R components to launch coupled antenna element 2K-1 and 2K+1 successively, antenna
A period of time 2K is received, wherein 0<K<N/2, now obtain transmitting amplitude and phase relation between odd number antenna element；Antenna element
2K-2 and 2K launch successively, and antenna element 2K-1 is received, wherein 0<K<N/2, now obtain the transmitting between even number antenna element
Amplitude and phase relation, antenna element 2,3 are launched successively, and antenna element 1 receives, and finally gives the transmitting between all antenna element
Amplitude and phase relation.
Above-mentioned test process is repeated twice, according to test result twice see every time detection antenna element between transmitting and
Whether reception amplitude is less than setting value, if there is then thinking that this antenna element has problem, while the transmitting that will be detected twice
Contrasted with receiving phase, see whether phase difference value twice is higher than setting value, if there is being then also considered as this antenna element
Problem be present.Because all antenna element of such a method of testing have relevance, an antenna element is faulty, can cause follow-up
Antenna element detection also can be problematic, therefore, first amplitude and phase antenna element of problems are positioned as failure and led to
Road, whether normal further detect subsequent antenna a period of time after to be repaired.
The invention is not limited in foregoing embodiment.The present invention, which expands to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (6)
- A kind of 1. digital array secondary radar numeral T/R component states detection methods, it is characterised in that including：Step 1：Electricity is completed but when being introduced into normal traffic pattern on digital T/R components, digital T/R components send fixed prefix with And incremental number；Whether the fixed prefix of processor detection is wrong with incremental number and counts error number, is malfunctioned if error number is more than Threshold value, then judge that communication has problem；When malfunctioning, number is less than or equal to the threshold value that malfunctions, then performs step 2；Step 2：For digital T/R components in normal traffic pattern, what digital T/R components sent signal noise or secondary radar should Signal is answered to processor, it is assumed that signal noise amplitude and the answer signal amplitude statistics average of secondary radar are in the first statistical threshold When between the second statistical threshold, L seconds digital T/R component of statistics sends the answer signal of secondary radar to processor data Amount；Data volume is less than the first statistical threshold or quantity is more than the second statistical threshold, then judges that digital T/R components optical-fibre communications is deposited In problem；When the first statistical threshold<Data volume<Second statistical threshold, then carry out step 3；Step 3：Processor sends transmitting data D1~D5 by optical fiber to digital T/R components, the amplitude-controllable of this transmitting data Make the transmission power of digital T/R components；Digital T/R components by transmitting chain by with the corresponding transmission power of transmitting data, Then this coupled signal is received and parsed through by receives link, then processor passes through coupled signal range value J1~J5 resulting number Word T/R assembly radio-frequencies passage whether normal communication, when any one value in coupled signal range value J1~J5 is beyond corresponding Coupled signal range value theoretical value T1~T5 ± 20% amplitude range, then it is assumed that radio-frequency channel has problem；When coupling is believed ± 20% amplitude models of no one of number range value J1~J5 beyond corresponding coupled signal range value theoretical value T1~T5 Enclose, and (J1/T1+J2/T2+J3/T3+J4/T4+J5/T5)/5 are more than 1.1 or less than 0.9, then it is assumed that radio-frequency channel, which exists, asks Topic；In addition, digital T/R assembly radio-frequencies passage is judged to normally, performing step 4；Wherein transmission power D1~D5 and numeral The transmission power corresponding relation of T/R components is：Transmission power D1~D5 respectively for 47dbm, 44dbm, 41dbm, 38dbm, 35dbm, then J1~J5 respectively should following scope 4000~3000,2000~1500,1000~750,500~375,250~ 187.5；Step 4：Assuming that digital array secondary radar antenna element number is N, the 2K that processor control is connected with digital T/R components Individual antenna element transmission signal, while 2K-1 and the 2K+1 antenna element reception that control is connected with digital T/R components Signal；Digital T/R components will be transmitted to processor after the signal resolution received by optical fiber, obtain the reception between odd number a period of time Amplitude and phase relation；After processor collects the reception amplitude between odd number antenna element and phase and it is normalized place Reason；Similarly, the 2K-1 antenna element transmission signal that processor control is connected with digital T/R components, while control and numeral 2K-2 and the 2K antenna element reception signal of T/R components connection, digital T/R components are by after the signal resolution received Processor is transmitted to by optical fiber, obtains reception amplitude and the phase relation between even number a period of time；Processor is by even number antenna element Between reception amplitude and phase collect after and be normalized；Then processor controls the 3rd antenna element transmitting letter Number, simultaneous processor controls first antenna element, second antenna element reception signal, due to odd number, even number antenna element Amplitude and phase it has been determined that on the basis of odd number, respective first antenna element of even number antenna element, determine odd number and idol Amplitude and phase between a couple of days line are the amplitude and phase relation of all antenna element；Wherein 0<K<N/2；Processor controls first antenna element, second antenna element reception signal in the step 4, due to odd number, even number The amplitude and phase of linear array are it has been determined that on the basis of odd number, respective first antenna element of even number antenna element, it is determined that very Number even number antenna between amplitude and phase be all antenna element amplitude and phase relation specific implementation process be：Assuming that 3rd antenna element transmission signal, it is respectively P ＇ that first antenna element, which receives amplitude and phase,3 1With H ＇3 1, second antenna A period of time reception signal P ＇3 2With H '3 2, because first and second antenna element is with the 3rd path phase difference existing for antenna element HX, amplitude difference PXIf the amplitude and phase invariant of even number antenna element, the amplitude and phase in odd number a period of time are changed into：PX*(H ＇3 2/ H ＇3 1)*(P2 3/P2 1)*(P4 5/P4 3)*…*(P2K-2 2K-1/P2K-2 2K-3) andHX+ (H ＇3 2- H ＇3 1)+(H2 3-H2 1)+(H4 5-H4 3)+…+(H2K-2 2K-1-H2K-2 2K-3)；Step 5：Repeat step 4, processor obtain the two groups of transmission power levels and phase value of each antenna element, judge to launch Performance number and phase value and the relation of corresponding setting value, judge whether antenna element is normal.
- A kind of 2. digital array secondary radar numeral T/R component states detection methods according to claim 1, it is characterised in that After processor collects the reception amplitude between odd number antenna element and phase in the step 4 and it is normalized specific Process is：Assuming that when the second antenna element is launched, the reception amplitude and phase in first antenna a period of time are respectively P2 1And H2 1, wherein Acceptance latitude and the subscript of phase represent transmitting a period of time position, and subscript represents to receive a period of time position；The reception in third antenna a period of time Amplitude and phase are respectively P2 3And H2 3, then the reception amplitude and phase of first antenna element of setting are respectively 1 and 0, then and the The reception amplitude and phase in triantennary a period of time are respectively P2 3/P2 1And H2 3-H2 1；The like, then 2K-1 reception amplitude and phase Position relationship expression is specially (P2 3/P2 1)*(P4 5/P4 3)*…*(P2K-2 2K-1/P2K-2 2K-3) and (H2 3-H2 1)+(H4 5-H4 3)+…+ (H2K-2 2K-1-H2K-2 2K-3)；After processor collects the reception amplitude between even number antenna element and phase in the step 4 and it is normalized specific Process is：Assuming that when third antenna a period of time launches, the reception amplitude and phase of the second antenna element are respectively P3 2And H3 2, the 4th The reception amplitude and phase of antenna element are respectively P3 4And H3 4, then the reception amplitude and phase of first antenna element of setting Respectively 1 and 0, then the reception amplitude in third antenna a period of time and phase are respectively P3 4/P3 2And H3 4-H3 2；The like, then 2K Reception amplitude and phase relation expression be specially (P3 4/P3 2)*(P5 6/P5 4)*…*(P2K-1 2K/P2K-1 2K-2) and (H3 4-H-3 2)+ (H5 6-H5 4)+…+(H2K-1 2K-H2K-1 2K-2)；P3 2And H3 2Middle subscript represents transmitting a period of time position, and subscript represents to receive a period of time position Put.
- A kind of 3. digital array secondary radar numeral T/R component states detection methods according to claim 1, it is characterised in that The step 5 is specially：Repeat step 4, processor obtain the two groups of transmission power levels and phase value of each antenna element, lead to Cross by the transmission power level of each antenna element compared with corresponding setting value, if the transmission power level of any antenna element is small In corresponding to setting value, then there is problem in this antenna element；The phase difference detected twice is entered with the phase difference of corresponding setting simultaneously Row compares, if the phase difference value of both sides detection is less than the phase difference value of corresponding setting, this antenna has problem；Otherwise, antenna A period of time communication is normal.
- A kind of 4. digital array secondary radar numeral T/R component states detection means, it is characterised in that including：Digital T/R components：Completed but when being introduced into normal traffic pattern for upper electricity, digital T/R components send fixed prefix with And incremental number；Processor：It is whether wrong and count error number for detecting fixed prefix and incremental number, if error number is more than error Threshold value, then judge that communication has problem；When error number is less than or equal to error threshold value, digital T/R components send signal noise or For the answer signal of person's secondary radar to processor, processor assumes that the answer signal amplitude of signal noise amplitude and secondary radar is united When counting average between the first statistical threshold and the second statistical threshold, L seconds digital T/R component of statistics sends answering for secondary radar Answer signal and give processor data amount；Judge the relation of the first statistical threshold, the second statistical threshold and data volume, when data volume be less than the first statistical threshold or Quantity is more than the second statistical threshold, then judges that digital T/R components optical-fibre communications has problem；When the first statistical threshold<Data volume< Second statistical threshold, processor send transmitting data D1~D5 by optical fiber to digital T/R components, and the amplitude of this transmitting data can Control the transmission power of digital T/R components；Digital T/R components are by transmitting chain by the way that data are corresponding launches work(with transmitting Rate, this coupled signal is then received and parsed through by receives link；Then processor by coupled signal range value J1~J5 judge digital T/R assembly radio-frequencies passage whether normal communication, when Any one value in coupled signal range value J1~J5 exceed corresponding coupled signal range value theoretical value T1~T5 ± 20% amplitude range, then it is assumed that radio-frequency channel has problem；When no one of coupled signal range value J1~J5 beyond pair The coupled signal range value theoretical value T1~T5 answered ± 20% amplitude range, and (J1/T1+J2/T2+J3/T3+J4/T4+ J5/T5)/5 it is more than 1.1 or less than 0.9, then it is assumed that radio-frequency channel has problem；In addition, digital T/R assembly radio-frequencies lead to Road is determined as normally, it assumes that digital array secondary radar antenna element number is N, and processor control is connected with digital T/R components The 2K antenna element transmission signal, while the 2K-1 that is connected with digital T/R components of control is individual and the 2K+1 antenna array Sub- reception signal；Digital T/R components will be transmitted to processor after the signal resolution received by optical fiber, obtain between odd number a period of time Reception amplitude and phase relation；After processor collects the reception amplitude between odd number antenna element and phase and carry out normalizing Change is handled；Similarly, the 2K-1 antenna element transmission signal be connected with digital T/R components of processor control, at the same control and 2K-2 and the 2K antenna element reception signal of digital T/R components connection, the signal solution that digital T/R components will receive Processor is transmitted to by optical fiber after analysis, obtains reception amplitude and the phase relation between even number a period of time；Processor is by even number antenna After reception amplitude and phase between a period of time are collected and it is normalized；Then processor controls the 3rd antenna element hair Signal is penetrated, simultaneous processor controls first antenna element, second antenna element reception signal, due to odd number, even number antenna The amplitude and phase in a period of time determine odd number it has been determined that on the basis of odd number, respective first antenna element of even number antenna element Amplitude and phase between even number antenna are the amplitude and phase relation of all antenna element；Then processor obtains each day The two groups of transmission power levels and phase value of linear array, judge the relation of transmission power level and phase value with corresponding setting value, Judge whether antenna element is normal；Wherein transmission power D1~D5 and digital T/R components transmission power corresponding relation is：Transmitting Power D1~D5 respectively should be in following scope 4000 respectively for 47dbm, 44dbm, 41dbm, 38dbm, 35dbm, then J1~J5 ~3000,2000~1500,1000~750,500~375,250~187.5；Wherein, the processor controls first antenna element, second antenna element reception signal, due to odd number, even number day The amplitude and phase of linear array are it has been determined that on the basis of odd number, respective first antenna element of even number antenna element, it is determined that very Number even number antenna between amplitude and phase be all antenna element amplitude and phase relation specific implementation process be：Assuming that 3rd antenna element transmission signal, it is respectively P ＇ that first antenna element, which receives amplitude and phase,3 1With H ＇3 1, second antenna A period of time reception signal P ＇3 2With H ＇3 2, because first and second antenna element is with the 3rd path phase difference existing for antenna element HX, amplitude difference PXIf the amplitude and phase invariant of even number antenna element, the amplitude and phase in odd number a period of time are changed into：PX*(H ＇3 2/ H ＇3 1)*(P2 3/P2 1)*(P4 5/P4 3)*…*(P2K-2 2K-1/P2K-2 2K-3) andHX+ (H ＇3 2- H ＇3 1)+(H2 3-H2 1)+(H4 5-H4 3)+…+(H2K-2 2K-1-H2K-2 2K-3)。
- A kind of 5. digital array secondary radar numeral T/R component states detection means according to claim 4, it is characterised in that After the processor collects the reception amplitude between odd number antenna element and phase and detailed process is normalized it is： Assuming that when the second antenna element is launched, the reception amplitude and phase in first antenna a period of time are respectively P2 1And H2 1, wherein acceptance latitude And the subscript of phase represents transmitting a period of time position, subscript represents to receive a period of time position；The reception amplitude and phase in third antenna a period of time Position is respectively P2 3And H2 3, then the reception amplitude and phase of first antenna element of setting are respectively 1 and 0, then third antenna battle array The reception amplitude and phase of son are respectively P2 3/P2 1And H2 3-H2 1；The like, then 2K-1 reception amplitude and phase relation table Up to specially (P2 3/P2 1)*(P4 5/P4 3)*…*(P2K-2 2K-1/P2K-2 2K-3) and (H2 3-H2 1)+(H4 5-H4 3)+…+(H2K-2 2K-1- H2K-2 2K-3)；After the processor collects the reception amplitude between even number antenna element and phase and detailed process is normalized it is： Assuming that when third antenna a period of time launches, the reception amplitude and phase of the second antenna element are respectively P3 2And H3 2, the 4th antenna element Reception amplitude and phase be respectively P3 4And H3 4, then the reception amplitude and phase of first antenna element of setting are respectively 1 He 0, then the reception amplitude in third antenna a period of time and phase are respectively P3 4/P3 2And H3 4-H3 2；The like, then 2K reception amplitude It is specially (P with phase relation expression3 4/P3 2)*(P5 6/P5 4)*…*(P2K-1 2K/P2K-1 2K-2) and (H3 4-H3 2)+(H5 6-H5 4)+…+ (H2K-1 2K-H2K-1 2K-2)；P3 2And H3 2Middle subscript represents transmitting a period of time position, and subscript represents to receive a period of time position.
- A kind of 6. digital array secondary radar numeral T/R component states detection means according to claim 4, it is characterised in that The processor obtains the two groups of transmission power levels and phase value of each antenna element, judges transmission power level and phase value With the relation of corresponding setting value, judge that the whether normal detailed process of antenna element is：Processor obtains the two of each antenna element Group transmission power level and phase value, by by the transmission power level of each antenna element compared with correspondence setting value, if The transmission power level of any antenna element is less than corresponding setting value, then this antenna element has problem；Twice it will detect simultaneously Phase difference is compared with the phase difference of corresponding setting, if the phase difference value of both sides detection is less than the phase difference value of corresponding setting, Then there is problem in this antenna；Otherwise, antenna element communication is normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510925306.2A CN105548977B (en) | 2015-12-14 | 2015-12-14 | A kind of digital array secondary radar numeral T/R component states detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510925306.2A CN105548977B (en) | 2015-12-14 | 2015-12-14 | A kind of digital array secondary radar numeral T/R component states detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105548977A CN105548977A (en) | 2016-05-04 |
| CN105548977B true CN105548977B (en) | 2018-03-13 |
Family
ID=55828288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510925306.2A Active CN105548977B (en) | 2015-12-14 | 2015-12-14 | A kind of digital array secondary radar numeral T/R component states detection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105548977B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108549058B (en) * | 2018-02-28 | 2022-05-13 | 四川九洲电器集团有限责任公司 | Secondary radar broadband active phased array system and dynamic calibration method thereof |
| CN108828538B (en) * | 2018-04-26 | 2021-02-09 | 中国科学院地质与地球物理研究所 | Radar transmitting power monitoring device |
| CN116973855B (en) * | 2023-06-21 | 2024-04-16 | 中国人民解放军空军预警学院 | T/R component failure threshold determining method, system, terminal and storage medium |
| CN117272118B (en) * | 2023-11-17 | 2024-02-13 | 成都天奥集团有限公司 | T/R component health state prediction method, system, equipment and medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226838A (en) * | 2011-03-30 | 2011-10-26 | 安徽四创电子股份有限公司 | S-mode secondary radar coding and decoding system with ADS-B function |
| CN103728592A (en) * | 2014-01-22 | 2014-04-16 | 四川九洲空管科技有限责任公司 | Digital array secondary radar system optical fiber communication data synchronizing method |
| CN103743960A (en) * | 2014-01-22 | 2014-04-23 | 四川九洲空管科技有限责任公司 | Far field test system and test method for digital array secondary radar antenna pattern |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100946935B1 (en) * | 2003-06-02 | 2010-03-09 | 삼성전자주식회사 | Apparatus for locating of mobile vehicle |
-
2015
- 2015-12-14 CN CN201510925306.2A patent/CN105548977B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226838A (en) * | 2011-03-30 | 2011-10-26 | 安徽四创电子股份有限公司 | S-mode secondary radar coding and decoding system with ADS-B function |
| CN103728592A (en) * | 2014-01-22 | 2014-04-16 | 四川九洲空管科技有限责任公司 | Digital array secondary radar system optical fiber communication data synchronizing method |
| CN103743960A (en) * | 2014-01-22 | 2014-04-23 | 四川九洲空管科技有限责任公司 | Far field test system and test method for digital array secondary radar antenna pattern |
Non-Patent Citations (1)
| Title |
|---|
| 《雷达数字T/R组件自动测试***设计;裴英;《现代雷达》;20130630;第35卷(第6期);第73-76页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105548977A (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105548977B (en) | A kind of digital array secondary radar numeral T/R component states detection method and device | |
| US5883882A (en) | Fault detection in a frequency duplexed system | |
| CN101453276B (en) | Detection system for repeater product radio frequency performance, and detection method thereof | |
| KR101865893B1 (en) | Method for testing wireless devices using predefined test segments initiated by over-the-air signal characteristics | |
| US20060250233A1 (en) | Wireless battery monitoring system and method | |
| CN101689939B (en) | Evaluation of the feedback quality in communication systems | |
| CN103414529A (en) | Universal automatic testing and fault diagnosis system | |
| CN103748851A (en) | End-to-end delay management for distributed communications networks | |
| CN108387878B (en) | Automatic test device and method for phased array radar TR component | |
| EP3195504B1 (en) | Monitoring system for a distributed antenna system | |
| EP2654228A2 (en) | Data transmission system and data transmission device | |
| US20170099099A1 (en) | Methods and apparatus for using an embedded optical signal source within an optical node to locate problematic optical spans | |
| US8879659B1 (en) | System and method for testing multiple data packet signal transceivers | |
| CN104104455A (en) | Passive intermodulation position detection method and device | |
| CN101179816B (en) | Fault detection method and apparatus of base station and base station system | |
| CN106872829A (en) | The test system of multifrequency integrated power amplifier | |
| CN103346847A (en) | United compressing spectrum sensing method based on iteration attack detection | |
| CN102412893B (en) | Test method for optical fiber fault in passive optical network (PON) and optical module device | |
| US20160285538A1 (en) | Base station signal matching device and relay device including the same | |
| CN111404578B (en) | Very high frequency transceiver and ground equipment of ground based on GBAS | |
| CN105812085B (en) | A kind of error correction method and system of the communication receipt of audio/USB Key | |
| KR20150132331A (en) | System and method for testing a data packet signal transceiver | |
| US10495683B2 (en) | Power supply stress testing | |
| CN114384558B (en) | GPU-based online signal quality monitoring and analyzing method and system | |
| CN114024629B (en) | Method for testing error rate of receiver of wireless communication test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |