CN107860989A - Mancarried electronic aid electromagnetic interference aircraft coupling path loss test method - Google Patents
Mancarried electronic aid electromagnetic interference aircraft coupling path loss test method Download PDFInfo
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- CN107860989A CN107860989A CN201710942557.0A CN201710942557A CN107860989A CN 107860989 A CN107860989 A CN 107860989A CN 201710942557 A CN201710942557 A CN 201710942557A CN 107860989 A CN107860989 A CN 107860989A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Power Engineering (AREA)
- Electromagnetism (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a kind of mancarried electronic aid electromagnetic interference aircraft coupling path loss test method, comprise the steps of：S1, determine PEDs electromagnetic interferences path and simulation test transmitting antenna placement location；S2, the respective working frequency range according to aircraft airborne equipment and its antenna, determine the test frequency range of aircraft interference path loss；S3, establish aircraft path loss test system；S4, carry out the calibration before path loss test, it is determined whether have the excess loss outside aircraft antenna cable loss；The straight-through loss of the second test cable and aircraft antenna cable that are used in the first test cable for determining to use in transmission channel, receiving channel；S5, aircraft coupling path loss test is carried out, obtain the track of each opening position to be tested in aircraft passenger compartment of transmitting antenna and coupled flutter power that spectrum analyzer receives；S6, carry out aircraft path loss calculation.
Description
Technical field
The present invention relates to a kind of mancarried electronic aid electromagnetic interference aircraft coupling path loss test method.
Background technology
Wireless phone has generally used in today's society, with the coverage rate of its extended network, reliability, ability and offer
The growth of service ability, mobile phone have turned into the necessity of people.Present most of airline aircrafts prohibit the use of in flight course
Mobile phone, the mancarried electronic aid (Portable such as mobile phone, notebook computer, palm PC are used however as passenger
Electronic Device, PED) demand gradual increase, unintentional use or unwarranted deliberately using being all by accident
It is possible.Relatively expensive backrest satellite phone, airline and communication supplier, which wait, increasingly to be favored in parts per trillion
One unit network technology, also increasingly pay close attention to providing cellular service on aircraft.In recent years flight example is shown uses hand on aircraft
Machine is technically feasible, i.e., uses low-power wireless cellular base station aboard, forms part per trillion element mesh.On aircraft
Communication linkage is established in part per trillion unit base station on the PED such as mobile phone equipment and aircraft, and aircraft part per trillion unit base station and ground
Face communication is realized by satellite link.Therefore reduce and establish electromagnetism caused by communication link with terrestrial cellular base station and do
The possibility disturbed.
Passenger's PED equipment such as carrying mobile phone in airplane, while bringing convenient, also set aircraft airborne electronics
The standby potential threat for receiving electromagnetic interference.American National Air and Space Executive Agent is directed to two parts of research report tables of PED issues
It is bright, continuously with PED can on reduction machine sensitive equipment safety allowance, and aircraft GPS system, ranging can be directly affected
The normal work of the airborne equipments such as instrument.Different from the airborne equipment on aircraft, the PED equipment of passenger's carrying is need not be by tight
The aircraft radiation-emitting limitation of lattice checks, and current popular data in mobile phone function service of new generation is increasingly more, work
Frequency range is also increasingly abundanter, therefore in different bandwidth test research mobile phone radiation transmittings and assesses electromagnetic interference to aircraft electronic
The influence and its threat of electrical system are significantly.
Threatened to assess PEDs in interference of the radiation-emitting signal caused by the specific radio frequency band of aircraft to aircraft, must
Must test aircraft path loss.For the aircraft of different operating type, every kind of type of airplane and series have oneself unique day
Line position and radio receiver installation configuration, these changes can all cause a wide range of path loss values, therefore need every kind of
Type of airplane should all carry out path loss test, to assess whether PEDs produces threat to aircraft, influence Primary communication navigation
Deng the work of electronic equipment.
Interference caused by PEDs can be coupled to aircraft receiver by aircraft airborne antenna, and this interference is referred to as front door and done
Disturb, it is in band or out of band that this interference signal is present in aircraft operation of receiver frequency, mainly passes through aircraft door and window path and couples
To antenna.Interference path loss is defined as reference antenna (being approximately portable electric appts PED) and connect to aircraft particular radio
The loss of receipts machine terminator terminating junctor.
Wang Yonggen, Dai Jigang, Wang Leyi were in the paper delivered in scientific and technical innovation Leader in 2015《Commercial aircraft portable electric
Sub- installation electromagnetical interference source forecast analysis research》In, using the method for simulation modeling calculating, opened in commercial aircraft and use PED
In the state of, using the domestic commercial aircraft newly developed as model, to the electromagnetic interference source of portable electric appts that may be present
Forecast analysis has been carried out, the interference field strength distribution in aircraft passenger compartment is calculated, has been not directed to how aircraft interference path is lost
Specific method of testing.
Master's thesis of the Sun Jingling of Nanjing Aero-Space University in 2010《Wireless Telecom Equipment in airline carriers of passengers main cabin
Aerial radiation interference damage is studied》In, the commercial simulation software EMPIRE-XCcel based on FDTD algorithms is established available for electricity
The B737-300 passenger plane electromagnetic models of magnetic simulation calculation, simulation calculation is under multiple types cordless communication network, each crossing cabin line
The port induced-current of cable, establish the electromagnetic simulation model of interference path loss (IPL), the airborne very high frequency(VHF) day of simulation calculation
The least interference path loss of line and L-band antenna, checking test is done to electromagnetic environment in the cabin of PED equipment, not carried out
Electromagnetic interference aircraft coupling path loss test is studied.
Dai Jigang, Chen Zhili were in the paper delivered in information communication in 2013《Commercial passenger aircraft portable electric appts electricity
Magnetic protection Design and verification technique research》In, cause the mechanism of electromagnetic interference, PED radiation-emittings to control from PED, newly grind aircraft
The several respects such as PED electromagnetic protections design requirement and seaworthiness authorization experiment are illustrated, and are referred to the coupling of aircraft front door and back door coupling
Verification experimental verification method is closed, but does not provide specific method of testing and testing procedure, calculation formula etc..
Commercial Aircraft Corporation of China, Ltd. Shanghai Aircraft Design Research Institute patent " detection electromagnetic interference method and
Its system " (application number：201611051284.2) in, there is provided one kind detection civil aircraft portable electric appts electromagnetic interference
Test system, including：Control unit, it is configured as controlling the unit in the system to implement the survey of electromagnetic interference
Examination；Transmitter unit, described control unit is configured to respond to, generates and launch test signal；And receiving unit, it is configured
In response to described control unit, to measure the test signal.Set in addition, patent provides detection civil aircraft portable electronic
The method of standby electromagnetic interference.
BJ University of Aeronautics ＆ Astronautics is in a kind of patent " electromagnetic compatibility test between transceiver based on GIS-Geographic Information System
Method " (publication number：In 103454523B), the transmission signal of equipment is launched in methods described using being directly injected into or radiation side
Formula receives, and is calculated by Path Loss for Radio Wave Propagation and playback monitoring is carried out after correcting, and used after playing back be directly injected into or
Radiation mode, which is sent on receiving device, carries out emc testing, with PEDs interference paths loss test provided by the invention
Method is different.CHINA PUTIAN INSTITUTE OF TECHNOLOGY Co., Ltd is in a kind of patent " method of testing of path loss " (publication number：
In 104519519A), there is provided method of testing include：Signal transmitter produces LTE230 protocol signals according to LTE230 agreements,
And test signal is regard the LTE230 protocol signals as by omnidirectional antenna and is sent to signal receiver；The signal receiver
The test signal received is demodulated, the received signal power of response is calculated according to the data after demodulation；According to institute
The transmission power of received signal power and the test signal is stated, obtains path loss data, this invention is applied to LTE230 nets
Network.
The content of the invention
It is an object of the invention to provide a kind of mancarried electronic aid electromagnetic interference aircraft coupling path loss test method,
Suitable for the test acquisition methods of the various portable electric appts interference path lossy datas of commercial aircraft, to assess its interference
Threat to aircraft.
A kind of mancarried electronic aid electromagnetic interference aircraft coupling path loss test method, it is characterized in that, the loss is surveyed
Examination comprises the steps of：
S1, determine PEDs electromagnetic interferences path and simulation test transmitting antenna placement location；
S2, the respective working frequency range according to aircraft airborne equipment and its antenna, determine the test of aircraft interference path loss
Frequency range；
S3, aircraft path loss test system is established, the loss test system includes：Frequency track source, for providing radio frequency letter
Number；Transmitting antenna, it is arranged in aircraft passenger compartment, frequency track source is connected by the first test cable and amplifier；Spectrum analyzer,
Frequency track source and the airborne antenna by the second test cable and aircraft antenna cable connection to aircraft are connected respectively；Computer,
By controlling cable connection spectrum analyzer；
S4, the calibration before path loss is carried out, determine the excess loss outside aircraft antenna cable loss；It is determined that transmitting is logical
The straight-through loss of the second test cable and aircraft antenna cable that are used in the first test cable for being used in road, receiving channel；
S5, aircraft coupling path loss test is carried out, the position to be tested in aircraft passenger compartment of localizing emission antenna, make day
Line crack between a door and its frame radiant power, spectrum analyzer is set to keep tracking to maximum, test obtains transmitting antenna will in aircraft passenger compartment
The power maximum for the coupled flutter that the track of each opening position of test and spectrum analyzer receive；
S6, carry out aircraft path loss calculation：
IPL=P(1)-P(2)=PT+GTF+GTA-αTL1-αRL1-PR (1)
In formula, IPL represents path loss；P(1)For the radiant power of the transmission signal of transmitting antenna；P(2)For aircraft antenna
The power maximum of the coupled flutter of cable reception；PTFor RF signal power caused by frequency track source；GTFFor transmission signal
Amplifier gain；GTAFor the gain of transmitting antenna；αTL1For the loss of the first test cable used in transmission channel；αRL1For
The loss of the second test cable used in receiving channel；PRPower for the coupled flutter of spectrum analyzer test is maximum
Value；
Carry out GPS system path loss calculation on aircraft：
IPL=P(1)-P(3)=PT+GTF+GTA-αTL1-αRL1-αAL-PR (2)
In formula, P(3)The coupled flutter power directly received for aircraft airborne antenna；αALFor aircraft in receiving channel
The loss of antenna cable.
Above-mentioned mancarried electronic aid electromagnetic interference aircraft coupling path loss test method, wherein, described step S4
Specifically include：
Position of transmitting antenna is arranged on from aircraft antenna 1m, the frequency scanning of configuration frequency track source tracking spectrum analyzer,
To determine whether the excess loss outside aircraft antenna cable loss；
The straight-through loss of all test cables and Aircraft Cables used in calibration system, and dB numbers are converted into, recorded.
Above-mentioned mancarried electronic aid electromagnetic interference aircraft coupling path loss test method, wherein, described step S5
Specifically include：
S51, the position to be tested in aircraft passenger compartment of localizing emission antenna, the position to be tested include window, door, seat
And junction between seat；
S52, using frequency track source and amplifier, provide radiofrequency signal for transmitting antenna, make transmitting antenna transmission signal；
S53, spectrum analyzer is set to keep tracking to maximum, continuously in test band scan；
S54, make transmitting antenna mobile or motionless, spectrum analyzer is arranged to maximum all the time during mobile or motionless
Keep the coupled flutter power maximum of tracking, recording track and test；
S55, change transmitting antenna polarization, carry out path loss test, make the vertically and horizontally polarization of transmitting antenna can
Test；
S56, transmitting antenna is redeployed to another position, return and perform step S52 progress path loss survey next time
The coupled flutter power maximum of examination, recording track and test, until completing all test positions.
Above-mentioned mancarried electronic aid electromagnetic interference aircraft coupling path loss test method, wherein, described step S54
In：
To be tested if junction between window, seat and seat, then transmitting antenna does not move, and is tested if aircraft door,
Then transmitting antenna moves along crack between a door and its frame.
The present invention has advantages below compared with prior art：Suitable for the PEDs electromagnetic interferences of all kinds commercial aircraft
Coupling path loss test is studied, to assess its threat of the interference to aircraft.The present invention suggested a kind of path loss simultaneously
The composition configuration of test system.
Brief description of the drawings
Fig. 1 is the connection relationship diagram of loss test system used in embodiments of the invention；
Fig. 2 is flow chart of the method for the present invention.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferable specific embodiment in detail, the present invention is further elaborated.
As shown in figure 1, in order to realize the inventive method, the mancarried electronic aid electromagnetic interference aircraft that is used in the present embodiment
Coupling path loss test system is included with lower component：
Frequency track source 1, for providing radiofrequency signal；
Amplifier 2, power amplification is carried out to the radiofrequency signal that frequency track source provides, the radiofrequency signal access transmitting day after amplification
Line 3；
Transmitting antenna 3, is arranged in aircraft passenger compartment, connects frequency track source 1 by the first test cable and amplifier 2, makes
The emission of radio frequency signals for coming self-frequency track source 1 and amplifier 2 is gone out, and is disturbed with simulating radiation-emitting caused by portable electric appts
Signal；
Spectrum analyzer 4, frequency track source 1 is connected respectively and is connected to by the second test cable and aircraft antenna cable 6
The airborne antenna 7 of aircraft, the coupled flutter that aircraft airborne antenna 7 receives is received, to calculate aircraft path loss values；
Computer 5, by controlling cable connection spectrum analyzer 4, realize Automated condtrol and data acquisition, the place of test
Reason, the coupled flutter power received by spectrum analyzer 4 and transmission signal power calculation aircraft path loss values, after
It will be described in detail in text.
Preferably, frequency track source 1, which is frequency, couples frequency track source, spectrum analyzer 4 is frequency coupling spectral analyzer, this group
Conjunction allows to frequency scan, and is compared detailed test, and reduce the testing time；Transmitting antenna 3 is using dipole antenna and double
Ridged horn antenna, dipole antenna are applied to low-frequency range, and double-ridged horn antenna is mainly used in more than 1GHz high bands.
The confirmation of the test frequency range of aircraft interference path loss is the respective work according to aircraft airborne equipment and its antenna
Frequency range is completed.The main airborne antenna of usual aircraft includes high-frequency communication (HF), VHF communication (VHF), localizer
Platform (LOC), VHF Omnidirection range (VOR), glide-path localizer (GS), airway traffic control radar (ATC), traffic alert and anticollision
System (TCAS), range finder (DME), global positioning system (GPS), microwave the reception antenna of the equipment such as road system (MLS).Can
To be tested according to the working frequency range of these equipment and merge test to these test frequency ranges, but these machines must be covered
Carry the working frequency range of equipment.Table 1 gives typical commercial aircraft airborne equipment and its working frequency range：
The typical commercial aircraft airborne equipment of table 1 and its working frequency range
In the present embodiment, spectrum analyzer 4 is with computer 5 by controlling cable connection, spectrum analyzer 4 and frequency track source 1
And by controlling cable connection.
In this test system, transmitting antenna is arranged on junction between the window OR gate or seat or seat of aircraft.Test
When, the position between each window, hatch door, each seat, the associated seat of aircraft seat side two in aircraft cabin, all
Should be tested, wherein, hatch door is larger, hatch door location arrangements test one group of data, i.e., transmitting antenna 3 should be moved along crack between a door and its frame into
Row test.
A kind of as shown in Fig. 2 mancarried electronic aid electromagnetic interference aircraft coupling path loss test side proposed by the present invention
Method, it is specifically comprised the steps of：
S1, determine PEDs electromagnetic interferences path and simulation test transmitting antenna placement location.PEDs interference sources are positioned at visitor
In cabin, victim is the radio receiver of the equipment such as communication and navigation on aircraft, and PED electromagnetic interferences path is to pass through aircraft window
With the crack between a door and its frame of aircraft door, aircraft antenna is reached along aircraft body, therefore simulate the transmitting of PEDs electromagnetic radiations interference
Antenna placement location is that transmitting antenna is predominantly disposed in each window, hatch door, each seat of aircraft passenger compartment in main cabin, its
Middle hatch door location arrangements are one group of data of test, i.e. transmitting antenna should be moved along crack between a door and its frame and tested；Seat test position should also
Including the position between the associated seat of aircraft seat side two, interference path loss test should be all carried out；
S2, the respective working frequency range according to aircraft airborne equipment and its antenna, determine the test of aircraft interference path loss
Frequency range；The main airborne antenna of usual aircraft include high-frequency communication (HF), VHF communication (VHF), localizer (LOC),
VHF Omnidirection range (VOR), glide-path localizer (GS), airway traffic control radar (ATC), traffic alert and CAS
(TCAS), range finder (DME), global positioning system (GPS), microwave the reception antenna of the equipment such as road system (MLS).Can root
Tested according to the working frequency range of these equipment and test is merged to these test frequency ranges, but these must be covered and airborne set
Standby working frequency range；
S3, aircraft path loss test system is established, the loss test system includes：Frequency track source, for providing radio frequency letter
Number；Transmitting antenna, it is arranged in aircraft passenger compartment, frequency track source is connected by first test cable and amplifier；Frequency spectrum point
Analyzer, frequency track source and the airborne antenna by the second test cable and aircraft antenna cable connection to aircraft are connected respectively；Meter
Calculation machine, by controlling cable connection spectrum analyzer；
S4, the calibration before path loss is carried out, determine the excess loss outside aircraft antenna cable loss, this excess loss
It is probably caused by the connector erosion in path, this excess loss data is not used to calculate path loss；It is determined that transmitting
The second test cable and the straight-through damage of aircraft antenna cable used in the first test cable for being used in passage, receiving channel
Consumption；
S5, aircraft coupling path loss test is carried out, the position to be tested in aircraft passenger compartment of localizing emission antenna, make day
Line crack between a door and its frame radiant power, spectrum analyzer is set to keep tracking to maximum, test obtains transmitting antenna will in aircraft passenger compartment
The coupled flutter power maximum that the track of each opening position of test and spectrum analyzer receive；
S6, carry out aircraft path loss calculation：
IPL=P(1)-P(2)=PT+GTF+GTA-αTL1-αRL1-PR (1)
In formula, IPL represents path loss；P(1)For the radiant power of the transmission signal of transmitting antenna；P(2)For aircraft antenna
The power maximum of the coupled flutter of cable reception；PTFor RF signal power caused by frequency track source；GTFFor transmission signal
Amplifier gain；GTAFor the gain of transmitting antenna；αTL1For the loss of the first test cable used in transmission channel；αRL1For
The loss of the second test cable used in receiving channel；PRPower for the coupled flutter of spectrum analyzer test is maximum
Value；
Carry out GPS system path loss calculation on aircraft：
IPL=P(1)-P(3)=PT+GTF+GTA-αTL1-αRL1-αAL-PR (2)
In formula, P(3)The coupled flutter power (being free of aircraft antenna cable) directly received for aircraft airborne antenna；
αALFor the loss of aircraft antenna cable in receiving channel.
Described step S4 is specifically included：
Position of transmitting antenna is arranged on from aircraft antenna 1m, the frequency scanning of configuration frequency track source tracking spectrum analyzer,
To determine whether the excess loss outside aircraft antenna cable loss；
The straight-through loss of all test cables and Aircraft Cables used in calibration system, and dB numbers are converted into, recorded.
Described step S5 is specifically included：
S51, the position to be tested in aircraft passenger compartment of localizing emission antenna, the position to be tested include window, door, seat
And junction between seat；
S52, using frequency track source and amplifier, provide radiofrequency signal for transmitting antenna, make transmitting antenna transmission signal；
S53, spectrum analyzer is set to keep tracking to maximum, continuously in test band scan；
S54, make transmitting antenna mobile or motionless, spectrum analyzer is arranged to maximum all the time during mobile or motionless
Keep the coupled flutter power maximum of tracking, recording track and test；
S55, change transmitting antenna polarization, carry out path loss test, make the vertically and horizontally polarization of transmitting antenna can
Test；
S56, transmitting antenna is redeployed to another position, return and perform step S52 progress path loss survey next time
The coupled flutter power maximum of examination, recording track and test, until completing all test positions.
In described step S54：
To be tested if junction between window, seat and seat, then transmitting antenna does not move, and is tested if aircraft door,
Then transmitting antenna slowly moves along crack between a door and its frame.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (4)
- A kind of 1. mancarried electronic aid electromagnetic interference aircraft coupling path loss test method, it is characterised in that the loss is surveyed Examination comprises the steps of：S1, determine PEDs electromagnetic interferences path and simulation test transmitting antenna placement location；S2, the respective working frequency range according to aircraft airborne equipment and its antenna, determine the test frequency range of aircraft interference path loss；S3, aircraft path loss test system is established, the loss test system includes：Frequency track source, for providing radiofrequency signal；Hair Antenna is penetrated, is arranged in aircraft passenger compartment, frequency track source is connected by the first test cable and amplifier；Spectrum analyzer, respectively Connect frequency track source and the airborne antenna by the second test cable and aircraft antenna cable connection to aircraft；Computer, pass through Control cable connection spectrum analyzer；S4, the calibration before path loss is carried out, determine the excess loss outside aircraft antenna cable loss；Determine in transmission channel The straight-through loss of the second test cable and aircraft antenna cable that are used in the first test cable for using, receiving channel；S5, aircraft coupling path loss test is carried out, the position to be tested in aircraft passenger compartment of localizing emission antenna, make antenna door Radiant power is stitched, sets spectrum analyzer to keep tracking to maximum, test obtains transmitting antenna and tested in aircraft passenger compartment Each opening position track and the power maximum of coupled flutter that receives of spectrum analyzer；S6, carry out aircraft path loss calculation：IPL=P(1)-P(2)=PT+GTF+GTA-αTL1-αRL1-PR (1)In formula, IPL represents path loss；P(1)For the radiant power of the transmission signal of transmitting antenna；P(2)For aircraft antenna cable The power maximum of the coupled flutter of reception；PTFor RF signal power caused by frequency track source；GTFFor putting for transmission signal Big device gain；GTAFor the gain of transmitting antenna；αTL1For the loss of the first test cable used in transmission channel；αRL1To receive The loss of the second test cable used in passage；PRFor the power maximum of the coupled flutter of spectrum analyzer test；Carry out GPS system path loss calculation on aircraft：IPL=P(1)-P(3)=PT+GTF+GTA-αTL1-αRL1-αAL-PR (2)In formula, P(3)The coupled flutter power directly received for aircraft airborne antenna；αALFor aircraft antenna in receiving channel The loss of cable.
- 2. mancarried electronic aid electromagnetic interference aircraft coupling path loss test method as claimed in claim 1, its feature exist In described step S4 is specifically included：Position of transmitting antenna is arranged on from aircraft antenna 1m, the frequency scanning of configuration frequency track source tracking spectrum analyzer, with true The fixed excess loss whether having outside aircraft antenna cable loss；The straight-through loss of all test cables and Aircraft Cables used in calibration system, and dB numbers are converted into, recorded.
- 3. mancarried electronic aid electromagnetic interference aircraft coupling path loss test method as claimed in claim 1, its feature exist In described step S5 is specifically included：S51, the position to be tested in aircraft passenger compartment of localizing emission antenna, the position to be tested include window, door, seat and seat Junction between position；S52, using frequency track source and amplifier, provide radiofrequency signal for transmitting antenna, make transmitting antenna transmission signal；S53, spectrum analyzer is set to keep tracking to maximum, continuously in test band scan；S54, make transmitting antenna mobile or motionless, spectrum analyzer is arranged to maximum and kept all the time during mobile or motionless The coupled flutter power maximum of tracking, recording track and test；S55, change transmitting antenna polarization, carry out path loss test, make the vertically and horizontally polarization of transmitting antenna can test Arrive；S56, transmitting antenna is redeployed to another position, return and perform step S52 progress path loss test next time, note The coupled flutter power maximum of track and test is recorded, until completing all test positions.
- 4. mancarried electronic aid electromagnetic interference aircraft coupling path loss test method as claimed in claim 3, its feature exist In in described step S54：Tested if junction between window, seat and seat, then transmitting antenna does not move, and tests, then sends out if aircraft door Antenna is penetrated to move along crack between a door and its frame.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412715A (en) * | 2018-09-06 | 2019-03-01 | 中国航空工业集团公司沈阳飞机设计研究所 | Airborne communication radio frequency reception equipment quantizating index electromagnetic interference test system and method |
| CN110750908A (en) * | 2019-10-25 | 2020-02-04 | 中国航空工业集团公司沈阳飞机设计研究所 | Method for simulating coupling characteristics of airplane front door under strong electromagnetic pulse radiation |
| CN110784273A (en) * | 2018-07-31 | 2020-02-11 | 和硕联合科技股份有限公司 | Test system and test method |
| CN110850350A (en) * | 2019-12-02 | 2020-02-28 | 上海航天测控通信研究所 | Large-caliber multi-reflector cascaded antenna link loss testing device and method |
| CN112505464A (en) * | 2020-12-21 | 2021-03-16 | 广州广电计量检测股份有限公司 | Simulation test method and device for antenna induction strong electromagnetic pulse coupling effect |
| CN112858961A (en) * | 2021-03-01 | 2021-05-28 | 哈尔滨工业大学 | Compensation method for multisource magnetic interference of aviation platform |
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