CN107797098A - A kind of zero-range set constant calibration method and system that integration is passed based on observing and controlling number - Google Patents
A kind of zero-range set constant calibration method and system that integration is passed based on observing and controlling number Download PDFInfo
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Abstract
The invention discloses a kind of zero-range set constant calibration method and system that integration is passed based on observing and controlling number, wherein, methods described, including：The character rate after framework for intergration high-speed transfer frame coding is passed according to system clock, the spread-spectrum pseudo code frequency of incoherent spread spectrum system and observing and controlling number, it is determined that resetting pulse per second (PPS)；According to pulse per second (PPS) is resetted, the uplink temporal enabling nulse of incoherent spread spectrum system and the uplink temporal enabling nulse of high-speed transfer frame are determined；The uplink temporal enabling nulse of uplink temporal enabling nulse and high-speed transfer frame to incoherent spread spectrum system carries out accurate alignment, so that the transmitting time delay of earth station equipment is accurately equal, and realize that the zero-range set constant of answering machine separates using zero calibration frequency converter, the zero-range set constant for solving the problems, such as the answering machine in up-downgoing radiofrequency characteristicses difference can not be directly separated, and meet that zero-range set constant separation method is effective, simplified and reliable mission requirements.
Description
Technical field
The invention belongs to Satellite TT and communication technical field, more particularly to a kind of distance that integration is passed based on observing and controlling number
Null value calibration method and system.
Background technology
Observing and controlling number passes integrated answering machine, and compatible incoherent spread spectrum and observing and controlling number pass integrated two kinds of TT ＆ C architectures, non-phase
Dry spread spectrum system and observing and controlling number pass framework for intergration and reliably switched according to up telecommand, time-sharing work.Wherein, observing and controlling
Number passes framework for intergration and is mainly used in tracking-telemetry and command subsystem, carries out reliable remote measurement, remote control, ranging with stabilization between establishing star ground and surveys
Speed and high-speed digital transmission link.
When answering machine, which is operated in observing and controlling number, to be passed under framework for intergration, the 1 tunnel remote control of uplink receiving earth station transmitting and 3 tunnels
Distance measuring signal, modulation system PCM-DS-BPSK, form and characteristic are identical with incoherent spread spectrum system.It is descending according to advanced in-orbit
System AOS (Advanced Orbiting Systems, AOS, Advanced Orbiting Systems agreement) agreement takes isochronism to insert industry
Business, high-speed digital transmission data and ranging and range rate information are subjected to framing coding, then take and special block 1/3 or 1/6 channel Turbo
Coding, then carries out PCM-BPSK modulation to carrier phase, power amplification and with being sent after outer filtering by TT＆C antenna to ground
Face station.
It can be seen that in observing and controlling number passes integrated answering machine, the upper incoherent spread spectrum measurement frame of behavior, high speed after lower behavior encodes
Transmission frame, up-downgoing radio-frequency modulations characteristic (e.g., TT ＆ C architecture, frequency difference, modulation system, character rate, signal bandwidth etc.)
Difference, the separation of the zero-range set constant of integrated answering machine can not be directly carried out by conventional methods such as zero calibration frequency converters.
The content of the invention
The technology of the present invention solves problem：Overcome the deficiencies in the prior art, there is provided a kind of that integration is passed based on observing and controlling number
Zero-range set constant calibration method and system, it is intended to solve the distance zero of the integration answering machine in up-downgoing radiofrequency characteristicses difference at present
The problem of value can not be directly separated.
In order to solve the above-mentioned technical problem, the invention discloses a kind of zero-range set constant calibration that integration is passed based on observing and controlling number
Method, including：
Framework for intergration high-speed transfer is passed according to system clock, the spread-spectrum pseudo code frequency of incoherent spread spectrum system and observing and controlling number
Character rate after frame coding, it is determined that resetting pulse per second (PPS)；Wherein, system clock, spread-spectrum pseudo code frequency and character rate are respectively
The integral multiple of pulse per second (PPS) is resetted, resets the integral multiple that pulse per second (PPS) is incoherent pulse per second (PPS)；
According to the reset pulse per second (PPS), the incoherent uplink temporal enabling nulse and high-speed transfer for spreading system is determined
The uplink temporal enabling nulse of frame；
By the uplink temporal enabling nulse of the incoherent spread spectrum system and the uplink temporal of high-speed transfer frame
Enabling nulse aligns；
According to the uplink temporal enabling nulse of incoherent spread spectrum system and the uplink of high-speed transfer frame after alignment
Road time enabling nulse, respectively determine mission mode under under absolute value and calibration pattern apart from absolute value；
According to the difference apart from absolute value under absolute value and calibration pattern under mission mode, it is determined that integration should
Answer the zero-range set constant of machine.
It is described according to the reset pulse per second (PPS) in the above-mentioned zero-range set constant calibration method that integration is passed based on observing and controlling number,
Determine the uplink temporal enabling nulse of incoherent spread spectrum system and the uplink temporal enabling nulse of high-speed transfer frame, bag
Include：
To the reset pulse per second (PPS), incoherent pulse per second (PPS) and frames in high speed pulse per second (PPS) alignment, measurement frame, expansion after being alignd
Frequency pseudo-code and high-speed transfer frame；
According to the measurement frame after the alignment, spread-spectrum pseudo code and high-speed transfer frame, the incoherent spread spectrum body is respectively obtained
The uplink temporal enabling nulse of the uplink temporal enabling nulse of system and the high-speed transfer frame.
It is described to the reset pulse per second (PPS), non-in the above-mentioned zero-range set constant calibration method that integration is passed based on observing and controlling number
Relevant pulse per second (PPS) and frames in high speed pulse per second (PPS) alignment, measurement frame, spread-spectrum pseudo code and high-speed transfer frame after being alignd, including：
Periodically the first digital controlled oscillator under incoherent spread spectrum system is resetted according to the reset pulse per second (PPS), disappeared
Except the cumulative time error caused by control word cut position so that the 1st PN-code capture in incoherent pulse per second (PPS), N number of PN-code capture
Start-phase forward position and the information bit forward position three's close alignment of measurement frame frame alignment word the 1st, and the measurement frame after being alignd
And spread-spectrum pseudo code；
Periodically the second digital controlled oscillator under framework for intergration is passed according to the reset pulse per second (PPS) to observing and controlling number to answer
Position, eliminates the cumulative time error caused by control word cut position so that incoherent pulse per second (PPS), frames in high speed pulse per second (PPS) and high-speed transfer
The bit forward position three's close alignment of the 1st frame frame head of frame the 1st, and the high-speed transfer frame after being alignd.
In the above-mentioned zero-range set constant calibration method that integration is passed based on observing and controlling number,
The start-phase of PN-code capture refers to：Measure the 1st code cycle in N number of PN-code capture contained by the 1st information bit of frame
The 1st pseudo-code phase；
Measurement frame refers to：The data frame arranged for transmission measurement information；
High-speed transfer frame refers to：Data frame ranging/the information that tests the speed and high-speed digital transmission data unified after framing and coding.
In the above-mentioned zero-range set constant calibration method that integration is passed based on observing and controlling number, the measurement according to after the alignment
Frame, spread-spectrum pseudo code and high-speed transfer frame, respectively obtain uplink temporal enabling nulse and the institute of the incoherent spread spectrum system
The uplink temporal enabling nulse of high-speed transfer frame is stated, including：
Transmitting baseband signal is used as after carrying out XOR to the measurement frame after the alignment and spread-spectrum pseudo code, radio frequency is adjusted
Edge after last 1 information bit of measurement frame frame alignment word before system, the uplink temporal for being designated as the incoherent spread spectrum system are opened
Gate pulse；
Transmitting baseband signal is used as after carrying out logical process to the high-speed transfer frame after the alignment, before radio-frequency modulations
Edge after last 1 sign bit of 1st frame frame synchronization head in every 64 transmission frames, it is designated as the uplink temporal of the high-speed transfer frame
Enabling nulse；Wherein, the logical process, including：Postamble verification, ping-pong buffer, Turbo codings and data scrambling.
In the above-mentioned zero-range set constant calibration method that integration is passed based on observing and controlling number, in addition to：
According to the system clock, the spread-spectrum pseudo code of the incoherent spread spectrum system is produced frequently by the first digital controlled oscillator
Rate；Wherein, spread-spectrum pseudo code frequency, including：The cycle for the up spread-spectrum pseudo code for spread-spectrum pseudo code frequency obtain after 1/M frequency dividings
Frequency, and the period frequency of the up spread-spectrum pseudo code obtained after being divided to 1/M carry out the 1/N times of out-hole run frame obtained after dividing
Information rate during frame framing；
According to the system clock, the observing and controlling number is produced by the second digital controlled oscillator and passes framework for intergration high-speed transfer
Character rate after frame fgs encoder；Wherein, character rate, including：To what is obtained after the frequency dividing of character rate progress 1/3 or 1/6
The information rate of transmission frame framing, and the information rate of the transmission frame framing to being obtained after 1/3 or 1/6 frequency dividing carry out 1/8 frequency dividing
Effective byte speed during the transmission frame framing obtained afterwards.
In the above-mentioned zero-range set constant calibration method that integration is passed based on observing and controlling number, the incoherent expansion according to after alignment
The uplink temporal enabling nulse of frequency system and the uplink temporal enabling nulse of high-speed transfer frame, task mould is determined respectively
Under formula under absolute value and calibration pattern apart from absolute value, including：
Using the uplink temporal enabling nulse of the incoherent spread spectrum system after alignment as initial time, arrived with downstream modulation
64 transmission frames in after last 1 sign bit of the 1st frame frame synchronization head along be the stop timing, when will be according to initial time and stopping
Carve determine time delay as under mission mode apart from absolute value；
Using the uplink temporal enabling nulse of the high-speed transfer frame after alignment as initial time, arrived with downstream modulation every
, will be according to initial time and stop timing along being the stop timing after last 1 sign bit of the 1st frame frame synchronization head in 64 transmission frames
The time delay of determination as under calibration pattern apart from absolute value.
In the above-mentioned zero-range set constant calibration method that integration is passed based on observing and controlling number, the distance according under mission mode
Absolute value and the difference apart from absolute value under calibration pattern, it is determined that the zero-range set constant of integrated answering machine, including：
Rr=R01-R02+Rb
Wherein, R01 represent under mission mode apart from absolute value, R02 represent under calibration pattern apart from absolute value, Rr tables
Show the zero-range set constant of integrated answering machine, Rb represents the time delay of the zero calibration frequency converter of logic analyser demarcation.
In the above-mentioned zero-range set constant calibration method that integration is passed based on observing and controlling number,
Incoherent pulse per second (PPS) is star 2Hz.
Accordingly, the invention also discloses a kind of zero-range set constant calibration system that integration is passed based on observing and controlling number, including：
First determining module, for being passed according to system clock, the spread-spectrum pseudo code frequency of incoherent spread spectrum system and observing and controlling number
Character rate after framework for intergration high-speed transfer frame coding, it is determined that resetting pulse per second (PPS)；Wherein, system clock, spread-spectrum pseudo code frequency
Rate and character rate are respectively the integral multiple for resetting pulse per second (PPS), reset the integral multiple that pulse per second (PPS) is incoherent pulse per second (PPS)；
Second determining module, for according to the reset pulse per second (PPS), determining the incoherent uplink temporal for spreading system
The uplink temporal enabling nulse of enabling nulse and high-speed transfer frame；
Alignment module, for by the uplink temporal enabling nulse and high-speed transfer frame of the incoherent spread spectrum system
Uplink temporal enabling nulse aligns；
3rd determining module, for the uplink temporal enabling nulse and height according to the incoherent spread spectrum system after alignment
The uplink temporal enabling nulse of fast transmission frame, respectively determine mission mode under under absolute value and calibration pattern away from
From absolute value；
4th determining module, for according under mission mode under absolute value and calibration pattern apart from absolute value
Difference, it is determined that the zero-range set constant of integrated answering machine.
The present invention has advantages below：
The invention discloses a kind of zero-range set constant calibration method that integration is passed based on observing and controlling number, according to system clock, non-
The spread-spectrum pseudo code frequency and observing and controlling number of relevant spread spectrum system pass the character rate after framework for intergration high-speed transfer frame coding, it is determined that
Reset pulse per second (PPS)；According to the reset pulse per second (PPS), the incoherent uplink temporal enabling nulse and high speed for spreading system is determined
The uplink temporal enabling nulse of transmission frame；To the uplink temporal enabling nulse and high-speed transfer of incoherent spread spectrum system
The uplink temporal enabling nulse of frame carries out accurate alignment so that the transmitting time delay of earth station equipment is accurately equal, and utilizes
Zero calibration frequency converter realizes the zero-range set constant separation of answering machine, solves the distance zero of the answering machine in up-downgoing radiofrequency characteristicses difference
The problem of value can not be directly separated.It can be seen that the present invention is for the different model background of up-downgoing radio-frequency modulations characteristic, it is proposed that ground
The mentality of designing of face station uplink temporal enabling nulse close alignment, and give and ensure the accurate equal realization of transmitting time delay
Method, only with zero calibration frequency converter, can solve the zero-range set constant of the integration answering machine in up-downgoing radiofrequency characteristicses difference without
The problem of method is directly separated, meets that zero-range set constant separation method is effective, simplified and reliable mission requirements.
Brief description of the drawings
Fig. 1 is a kind of step flow for the zero-range set constant calibration method that integration is passed based on observing and controlling number in the embodiment of the present invention
Figure；
Fig. 2 is a kind of null value piece-rate system block diagram in the embodiment of the present invention；
Null value piece-rate system block diagram when Fig. 3 is a kind of far field wireless test in the embodiment of the present invention；
Fig. 4 is a kind of clock zone management block diagram in the embodiment of the present invention；
Fig. 5 is the clock zone schematic diagram before a kind of time delay alignment in the embodiment of the present invention；
Fig. 6 is the clock zone schematic diagram after a kind of time delay alignment in the embodiment of the present invention.
Embodiment
It is public to the present invention below in conjunction with accompanying drawing to make the object, technical solutions and advantages of the present invention clearer
Embodiment is described in further detail.
The invention discloses a kind of zero-range set constant calibration method that integration is passed based on observing and controlling number, contrast observing and controlling sum passes two
Kind system, proposes the mentality of designing of earth station's uplink temporal enabling nulse close alignment first, and gives guarantee hair
Penetrate the accurate equal implementation method of time delay.The zero-range set constant calibration method that integration is passed based on observing and controlling number only takes school zero to become
Frequency device, solves the different answering machine null value isolation technics problem of up-downgoing radiofrequency characteristicses, mainly in the survey of all kinds of orbiters
Control on communications platform with using.
Wherein：
Observing and controlling number passes framework for intergration and referred to：The incoherent spread spectrum system of up use, it is descending to utilize same radio frequency link, adopt
Isochronism Insert service is taken, by the ranging/information that tests the speed and high-speed digital transmission uniform data framing and coding, realizes that observing and controlling sum passes letter
A kind of new TT ＆ C architecture of road fusion.It can be seen that observing and controlling number passes framework for intergration except possessing the basic functions such as remote control, remote measurement
Outside, it is also equipped with down high speed number and passes function, support ground multistation ranging/test the speed, extensive type has been obtained in Satellite TT field
Number application.Observing and controlling number pass framework for intergration under, due to it is up take it is incoherent measurement frame, it is descending take high-speed transfer frame, on
Downlink radio frequency characteristic difference is entirely different, it is thus impossible to using the conventional methods such as zero calibration frequency converter be done directly answering machine away from
Separated from null value.
Earth station need to possess two kinds of mode of operations：Mission mode and calibration pattern.Earth station sends non-phase under mission mode
Dry to spread measurement signal, earth station sends and the observing and controlling number biography descending identical high-speed transfer frame of framework for intergration under calibration pattern.
Incoherent spread spectrum system refers to：Uplink and downlink signals are using the TT ＆ C architecture of measurement frame structure, its up-downgoing pseudo-code phase
Position and speed are without relevant, and it is ranging information to measure transmitted breath in frame, and out-hole run frame is only used for fuzzy distance solution, descending survey
Measure the metrical informations such as pseudorange and the Doppler of frame modulation answering machine.
Reference picture 1, show a kind of zero-range set constant calibration method that integration is passed based on observing and controlling number in the embodiment of the present invention
Step flow chart.In the present embodiment, the zero-range set constant calibration method that integration is passed based on observing and controlling number, including：
Step 101, framework for intergration is passed according to system clock, the spread-spectrum pseudo code frequency of incoherent spread spectrum system and observing and controlling number
Character rate after high-speed transfer frame coding, it is determined that resetting pulse per second (PPS).
In the present embodiment, system clock, spread-spectrum pseudo code frequency and character rate are respectively the integral multiple for resetting pulse per second (PPS),
Reset the integral multiple that pulse per second (PPS) is incoherent pulse per second (PPS).For example, note：System clock is fs, spread-spectrum pseudo code frequency is fg, symbol speed
Rate is ft, reset pulse per second (PPS) is fi, incoherent pulse per second (PPS) is Clk2pps, then has：Fs=K1 × fi, ft=K2 × fi, fg=K3
× fi, fi=K4 × Clk2pps.Wherein, K1, K2, K3 and K4 are natural number, and in other words, fi can be fs, fg and ft three
Greatest common divisor.Preferably, incoherent pulse per second (PPS) Clk2pps can be star 2Hz.
In the preferred embodiment of the present invention, (can be designated as by the first digital controlled oscillator according to the system clock
NCO1 the spread-spectrum pseudo code frequency fg of the incoherent spread spectrum system) is produced.Wherein, spread-spectrum pseudo code frequency fg, including：It is pseudo- to spread spectrum
Code frequency fg carries out the period frequency fg1 of the up spread-spectrum pseudo code obtained after 1/M (M can with but be not limited only to as 1023) frequency dividings,
With information rate when carrying out 1/N (N can with but be not limited only to as 10) times of out-hole run frame frame framing obtained after dividing to fg1
fg2.Wherein, (Numerically Controlled Oscillator, NCO, digital controlled oscillator).
In the preferred embodiment of the present invention, (can be designated as by the second digital controlled oscillator according to the system clock
NCO2 the character rate ft (about 3Mbps and about 1Mbps, totally two grades) after high-speed transfer frame coding) is produced.Wherein, character rate
Ft, including：To character rate ft carry out 1/3 or 1/6 frequency dividing after obtain transmission frame framing information rate ft1 (about 1Mbps and
About 256Kbps), and the effective byte speed ft2 during transmission frame framing to being obtained after the frequency dividing of ft1 progress 1/8.
Step 102, according to the reset pulse per second (PPS), determine incoherent spread spectrum system uplink temporal enabling nulse and
The uplink temporal enabling nulse of high-speed transfer frame.
In the present embodiment, a kind of uplink temporal enabling nulse and high-speed transfer frame for determining incoherent spread spectrum system
The mode of uplink temporal enabling nulse can be as follows：
Sub-step S1, reset pulse per second (PPS) fi, incoherent pulse per second (PPS) Clk2pps and the frames in high speed pulse per second (PPS) are alignd, obtained
Measurement frame, spread-spectrum pseudo code and high-speed transfer frame after to alignment.
In the present embodiment, measurement frame and spread-spectrum pseudo code after being alignd in the following way：
Periodically the first digital controlled oscillator NCO1 under incoherent spread spectrum system is carried out according to the reset pulse per second (PPS) fi
Reset, eliminate the cumulative time error caused by control word cut position so that in incoherent pulse per second (PPS) Clk2pps, N number of PN-code capture
The start-phase forward position of 1st PN-code capture and the information bit forward position three's close alignment of measurement frame frame alignment word the 1st, and obtain pair
Measurement frame and spread-spectrum pseudo code after neat.
Preferably, the start-phase of PN-code capture refers to：Measure the 1st individual PN-code capture of N contained by information bit (such as 10) of frame
In the 1st code cycle (code length 1023) the 1st pseudo-code phase.Measurement frame refers to：The number arranged for transmission measurement information
According to frame.Wherein, the frame frequency for the data frame arranged for transmission measurement information can be 2 frames/s, and each frame length can be 500bit.
In the present embodiment, the high-speed transfer frame after being alignd in the following way：
The second digital controlled oscillator NCO2 under framework for intergration is periodically passed to observing and controlling number according to the reset pulse per second (PPS) fi
Resetted, eliminate the cumulative time error caused by control word cut position so that incoherent pulse per second (PPS) Clk2pps, frames in high speed second
Pulse and the bit forward position three's close alignment of the 1st frame frame head of high-speed transfer frame the 1st, and the high-speed transfer frame after being alignd.
Preferably, high-speed transfer frame refers to：After the ranging/information that tests the speed and high-speed digital transmission data are unified into framing and coding
Data frame.Frames in high speed pulse per second (PPS) refers to：In the case where observing and controlling number passes framework for intergration, for example, speed 3Mbps, the frame frequency of high-speed transfer frame
For 128 frames/s, every 64 frame (0.5s) produces a frames in high speed pulse per second (PPS), inserts 8bit measurement letters in this 64 transmission frames per frame
Breath, 64 frames complete 1 perfect measurement frame (500bit) transmission.
In the present embodiment, by above-mentioned steps, earth station equipment realizes the management by synchronization of clock zone, resets pulse per second (PPS)
Fi, incoherent pulse per second (PPS) Clk2pps and frames in high speed pulse per second (PPS) three's close alignment, while complete to measure the data of frame and transmission frame
Framing.
Preferably, it is as shown in table 1 to measure the frame structure of frame, is specifically as follows：Observing and controlling number passes up under framework for intergration
It is identical with incoherent spread spectrum out-hole run frame to measure frame, out-hole run frame is made up of 50 words, per word 10.2 frames of frame frequency/s, letter
Cease speed：500 2 frames of bit/frame */s=1000bps.
| W1 | W2 | W3~W7 | W8~W46 | W47~W48 | W49~W50 |
| Frame count | Earth station's code name | Earth station time T | Retain | CRC | Frame synchronization DE20 |
Table 1, observing and controlling number pass the frame structure signal table of the out-hole run frame under framework for intergration
Preferably, the frame structure of high-speed transfer frame is as shown in table 2, is specifically as follows：By taking high speed 3Mbps patterns as an example, frame
Frequently 128 frames/s, information rate：1024 byte/frame * 8,128 frames of bits/bytes */s=1048576bps, 1/3Turbo channels are compiled
Character rate about 3Mbps after code.Wherein insert district is used to insert measurement frame, and data field is used to insert high-speed digital transmission data.
| W1~W4 | W5~W12 | W13~W30 | W31~W1022 | W47~W48 |
| Frame alignment word | Leading head | Measure insert district | Data field | CRC |
Table 2, observing and controlling number pass the down high speed transmission frame-form under framework for intergration
Sub-step S2, according to the measurement frame after the alignment, spread-spectrum pseudo code and high-speed transfer frame, respectively obtain the non-phase
The uplink temporal enabling nulse of dry spread spectrum system and the uplink temporal enabling nulse of the high-speed transfer frame.
In the present embodiment, the uplink temporal that can obtain the incoherent spread spectrum system in the following way opens the door
Pulse：
Transmitting baseband signal is used as after carrying out XOR to the measurement frame after the alignment and spread-spectrum pseudo code, radio frequency is adjusted
Edge after last 1 information bit of measurement frame frame alignment word before system, the uplink temporal for being designated as the incoherent spread spectrum system are opened
Gate pulse.
In the present embodiment, the uplink temporal enabling arteries and veins of the high-speed transfer frame can be obtained in the following way
Punching：
Transmitting baseband signal is used as after carrying out logical process to the high-speed transfer frame after the alignment, before radio-frequency modulations
Edge after last 1 sign bit of 1st frame frame synchronization head in every 64 transmission frames, it is designated as the uplink temporal of the high-speed transfer frame
Enabling nulse；Wherein, the logical process, including：Postamble verification, ping-pong buffer, Turbo codings and data scrambling.
Step 103, by it is described it is incoherent spread spectrum system uplink temporal enabling nulse and high-speed transfer frame it is up
Link Time enabling nulse aligns.
In the present embodiment, can be to the uplink temporal enabling nulse and high-speed transfer of the incoherent spread spectrum system
The uplink temporal enabling nulse of frame enters line code adjustment, time stimulatiom and auxiliary high-speed oscilloscope test and confirmed, ensures institute
The uplink temporal enabling nulse for stating incoherent the uplink temporal enabling nulse for spreading system and high-speed transfer frame is accurate
Alignment, to meet the accurate equal purpose of transmitting time delay.So far, the earth station for realizing incoherent spread spectrum and high-speed transfer frame is sent out
Penetrate that time delay is identical, and mission mode is identical with the transmission frame format of ground station reception under calibration pattern, therefore it is equal to receive time delay, because
This, under mission mode and calibration pattern, the total transmitting-receiving process time delay of earth station is equal.
Step 104, according to the uplink temporal enabling nulse and high-speed transfer frame of the incoherent spread spectrum system after alignment
Uplink temporal enabling nulse, respectively determine mission mode under the distance under absolute value and calibration pattern it is absolute
Value.
In the present embodiment, earth station's selection mission mode, i.e. system radio frequency cable connection to answering machine, it is up take it is non-
Relevant spread spectrum, it is descending to take high-speed transfer frame.Preferably, the distance that can be determined as follows under mission mode is absolute
Value：
Using the uplink temporal enabling nulse of the incoherent spread spectrum system after alignment as initial time, arrived with downstream modulation
64 transmission frames in after last 1 sign bit of the 1st frame frame synchronization head along be the stop timing, when will be according to initial time and stopping
Carve determine time delay as under mission mode apart from absolute value (being designated as R01).
In the present embodiment, (time lag is remembered for earth station's selection calibration pattern, i.e. system radio frequency cable connection to zero calibration frequency converter
For Rb), high-speed transfer frame is taken in now up-downgoing.Preferably, the distance that can be determined as follows under calibration pattern
Absolute value (is designated as R02)：
Using the uplink temporal enabling nulse of the high-speed transfer frame after alignment as initial time, arrived with downstream modulation every
, will be according to initial time and stop timing along being the stop timing after last 1 sign bit of the 1st frame frame synchronization head in 64 transmission frames
The time delay of determination as under calibration pattern apart from absolute value R02.
Step 105, according to the difference apart from absolute value under absolute value and calibration pattern under mission mode, it is determined that
The zero-range set constant of integrated answering machine.
In the present embodiment, the specific calculation of the zero-range set constant (being designated as Rr) of integrated answering machine can be as follows：Rr
=R01-R02+Rb.As it was previously stated, Rb represents the time delay of the zero calibration frequency converter of logic analyser demarcation.
On the basis of above-described embodiment, below in conjunction with the accompanying drawings 2~6, one is passed based on observing and controlling number to of the present invention
The implementation process of the zero-range set constant calibration method of change is briefly described.
Reference picture 2, show a kind of null value piece-rate system block diagram in the embodiment of the present invention.The null value piece-rate system can be realized
The zero-range set constant calibration method of the present invention that integration is passed based on observing and controlling number：Answered when switch K1 and switch K2 are placed in spread spectrum
When answering pusher side, then system can obtain under mission mode apart from absolute value R01, when switch K1 and switch K2 are placed in the frequency conversion of school zero
Device side, then system can obtain under calibration pattern apart from absolute value R02., can in the case where the time delay of zero calibration frequency converter is Rb
Obtain the zero-range set constant Rr of answering machine under the model of integration, and Rr=R01-R02+Rb.
Reference picture 3, null value piece-rate system block diagram when showing a kind of far field wireless test in the embodiment of the present invention.Such as Fig. 3,
Spread spectrum answering machine and zero calibration frequency converter can be placed in calibration tower, and upper and lower switch matrix, Up/Down Conversion device and 70Mhz Base-Band Processings are set
It is standby to be placed in ground control station.
Reference picture 4, show a kind of clock zone management block diagram in the embodiment of the present invention.In the present embodiment, system clock
Fs produces pseudo- bit rate fg using digital controlled oscillator NCO1, and periodically NCO1 is resetted using pulse per second (PPS) fi is resetted, and leads to
Cross frequency dividing and obtain the period frequency fg1 and out-hole run frame information speed fg2 of spread-spectrum pseudo code.System clock fs is vibrated using numerical control
Device NCO2 produces observing and controlling number and passes the character rate ft after framework for intergration high-speed transfer frame coding, and utilizes and reset pulse per second (PPS) fi weeks
Phase property is resetted to NCO2, and the information rate ft1 and effective byte speed ft2 of high-speed transfer frame are obtained by frequency dividing.
Reference picture 5, show the clock zone schematic diagram before a kind of time delay alignment in the embodiment of the present invention.In the present embodiment
In, under incoherent system, the 1st PN-code capture rises in the incoherent pulse per second (PPS) Clk2pps of up spread spectrum, N number of PN-code capture
Beginning phase forward position, the information bit forward position of measurement frame frame alignment word the 1st, this three's close alignment.Observing and controlling number is passed under framework for intergration, high
The up incoherent pulse per second (PPS) Clk2pps of speed, frames in high speed pulse per second (PPS), the bit forward position of the 1st frame frame head of high-speed transfer frame the 1st, three
Person's close alignment.
Reference picture 6, show the clock zone schematic diagram after a kind of time delay alignment in the embodiment of the present invention.In the present embodiment
In, under incoherent system, transmitting baseband signal is used as after measuring frame information and spread-spectrum pseudo code progress XOR.Framework for intergration
Under, it is used as transmitting baseband after the logical process such as the verification of high-speed transfer frame experience postamble, ping-pong buffer, Turbo codings, data scrambling
Signal.By code adjustment and time stimulatiom, auxiliary high-speed oscilloscope test confirms, ensures upper after 2 kinds of mode logic processing
Line link time enabling nulse is accurately aimed at, to meet the accurate equal purpose of transmitting time delay.
In summary, the zero-range set constant calibration method of the present invention that integration is passed based on observing and controlling number, during according to system
Clock, the spread-spectrum pseudo code frequency of incoherent spread spectrum system and observing and controlling number pass the symbol speed after framework for intergration high-speed transfer frame coding
Rate, it is determined that resetting pulse per second (PPS)；According to the reset pulse per second (PPS), the incoherent uplink temporal enabling nulse for spreading system is determined
With the uplink temporal enabling nulse of high-speed transfer frame；To the uplink temporal enabling nulse and height of incoherent spread spectrum system
The uplink temporal enabling nulse of fast transmission frame carries out accurate alignment so that and the transmitting time delay of earth station equipment is accurately equal,
And realize that the zero-range set constant of answering machine separates using zero calibration frequency converter, solve the answering machine in up-downgoing radiofrequency characteristicses difference
The problem of zero-range set constant can not be directly separated.It can be seen that the present invention carries for the different model background of up-downgoing radio-frequency modulations characteristic
The mentality of designing of Chu Liao earth stations uplink temporal enabling nulse close alignment, and it is accurately equal to give guarantee transmitting time delay
Implementation method, only with zero calibration frequency converter, can solve the distance of the integration answering machine in up-downgoing radiofrequency characteristicses difference
The problem of null value can not be directly separated, meets that zero-range set constant separation method is effective, simplified and reliable mission requirements.
Secondly, the zero-range set constant calibration method of the present invention that integration is passed based on observing and controlling number, numerical control vibration is overcome
Device avoids distance value null value saltus step due to cumulative time error caused by cut position effect.
Again, it is of the present invention that integrated zero-range set constant calibration method is passed to be hidden in high-speed transfer based on observing and controlling number
Along being enabling nulse after frame synchronization head before radio-frequency modulations in frame and measurement spread spectrum frame, final, earth station's modulation hair is realized
Penetrate the uniformity of time delay.
Launched in addition, method of the present invention has had been supplied at present on model satellite, through whole star performance test and
Earth station wirelessly docks, distance and actual actual distance between the earth station measured using the described method of invention and calibration tower
Error is less than 0.3m, is much better than the 3m of system requirements technical indicator, fully demonstrates the validity of this method, feasibility and can
By property.
On the basis of above method embodiment, the invention also discloses a kind of distance zero that integration is passed based on observing and controlling number
Value calibration system, including：First determining module, for according to system clock, it is incoherent spread spectrum system spread-spectrum pseudo code frequency and
Observing and controlling number passes the character rate after framework for intergration high-speed transfer frame coding, it is determined that resetting pulse per second (PPS)；Wherein, system clock, expansion
Frequently pseudo- code frequency and character rate are respectively the integral multiple for resetting pulse per second (PPS), reset the integer that pulse per second (PPS) is incoherent pulse per second (PPS)
Times；Second determining module, for according to the reset pulse per second (PPS), determining the incoherent uplink temporal enabling arteries and veins for spreading system
Punching and the uplink temporal enabling nulse of high-speed transfer frame；Alignment module, for by it is described it is incoherent spread spectrum system it is up
The uplink temporal enabling nulse of Link Time enabling nulse and high-speed transfer frame aligns；3rd determining module, for basis
The uplink temporal enabling nulse of incoherent spread spectrum system after alignment and the uplink temporal enabling arteries and veins of high-speed transfer frame
Punching, respectively determine mission mode under under absolute value and calibration pattern apart from absolute value；4th determining module, for root
According to the difference apart from absolute value under absolute value and calibration pattern under mission mode, it is determined that the distance of integrated answering machine
Null value.
For system embodiment, because it is corresponding with embodiment of the method, so description is fairly simple, correlation
Place referring to embodiment of the method part explanation.
Each embodiment in this explanation is described by the way of progressive, what each embodiment stressed be and its
The difference of his embodiment, between each embodiment identical similar part mutually referring to.
It is described above, it is only the optimal embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (10)
- A kind of 1. zero-range set constant calibration method that integration is passed based on observing and controlling number, it is characterised in that including：Pass framework for intergration high-speed transfer frame according to system clock, the spread-spectrum pseudo code frequency of incoherent spread spectrum system and observing and controlling number and compile Character rate after code, it is determined that resetting pulse per second (PPS)；Wherein, system clock, spread-spectrum pseudo code frequency and character rate are respectively to reset The integral multiple of pulse per second (PPS), reset the integral multiple that pulse per second (PPS) is incoherent pulse per second (PPS)；According to the reset pulse per second (PPS), incoherent the uplink temporal enabling nulse for spreading system and high-speed transfer frame are determined Uplink temporal enabling nulse；The uplink temporal of the uplink temporal enabling nulse of the incoherent spread spectrum system and high-speed transfer frame is opened the door Pulse is alignd；During according to the up-link of the uplink temporal enabling nulse of the incoherent spread spectrum system after alignment and high-speed transfer frame Between enabling nulse, respectively determine mission mode under under absolute value and calibration pattern apart from absolute value；According to the difference apart from absolute value under absolute value and calibration pattern under mission mode, it is determined that integrated answering machine Zero-range set constant.
- 2. the zero-range set constant calibration method according to claim 1 that integration is passed based on observing and controlling number, it is characterised in that described According to the reset pulse per second (PPS), the up of incoherent the uplink temporal enabling nulse for spreading system and high-speed transfer frame is determined Link Time enabling nulse, including：To the reset pulse per second (PPS), incoherent pulse per second (PPS) and frames in high speed pulse per second (PPS) alignment, the measurement frame, spread spectrum after being alignd are pseudo- Code and high-speed transfer frame；According to the measurement frame after the alignment, spread-spectrum pseudo code and high-speed transfer frame, the incoherent spread spectrum system is respectively obtained The uplink temporal enabling nulse of uplink temporal enabling nulse and the high-speed transfer frame.
- 3. the zero-range set constant calibration method according to claim 2 that integration is passed based on observing and controlling number, it is characterised in that described To the reset pulse per second (PPS), incoherent pulse per second (PPS) and frames in high speed pulse per second (PPS) alignment, measurement frame, spread-spectrum pseudo code after being alignd and High-speed transfer frame, including：According to it is described reset pulse per second (PPS) periodically to it is incoherent spread spectrum system under the first digital controlled oscillator reset, eliminate because Cumulative time error caused by control word cut position so that of the 1st PN-code capture in incoherent pulse per second (PPS), N number of PN-code capture Beginning phase forward position and the information bit forward position three's close alignment of measurement frame frame alignment word the 1st, and the measurement frame after being alignd and expansion Frequency pseudo-code；Periodically the second digital controlled oscillator under framework for intergration is passed according to the reset pulse per second (PPS) to observing and controlling number to reset, and is disappeared Except the cumulative time error caused by control word cut position so that incoherent pulse per second (PPS), frames in high speed pulse per second (PPS) and high-speed transfer frame the 1st The bit forward position three's close alignment of frame frame head the 1st, and the high-speed transfer frame after being alignd.
- 4. the zero-range set constant calibration method according to claim 3 that integration is passed based on observing and controlling number, it is characterised in thatThe start-phase of PN-code capture refers to：Measure the 1st of the 1st code cycle in N number of PN-code capture contained by the 1st information bit of frame Individual pseudo-code phase；Measurement frame refers to：The data frame arranged for transmission measurement information；High-speed transfer frame refers to：Data frame ranging/the information that tests the speed and high-speed digital transmission data unified after framing and coding.
- 5. the zero-range set constant calibration method according to claim 2 that integration is passed based on observing and controlling number, it is characterised in that described According to the measurement frame after the alignment, spread-spectrum pseudo code and high-speed transfer frame, the up of the incoherent spread spectrum system is respectively obtained The uplink temporal enabling nulse of Link Time enabling nulse and the high-speed transfer frame, including：Transmitting baseband signal is used as after carrying out XOR to the measurement frame after the alignment and spread-spectrum pseudo code, before radio-frequency modulations Last 1 information bit of measurement frame frame alignment word after edge, be designated as it is described it is incoherent spread spectrum system uplink temporal enabling arteries and veins Punching；Transmitting baseband signal is used as after carrying out logical process to the high-speed transfer frame after the alignment, by every 64 before radio-frequency modulations Edge after last 1 sign bit of 1st frame frame synchronization head in individual transmission frame, the uplink temporal for being designated as the high-speed transfer frame open the door Pulse；Wherein, the logical process, including：Postamble verification, ping-pong buffer, Turbo codings and data scrambling.
- 6. the zero-range set constant calibration method according to claim 1 that integration is passed based on observing and controlling number, it is characterised in that also wrap Include：According to the system clock, the incoherent spread-spectrum pseudo code frequency for spreading system is produced by the first digital controlled oscillator； Wherein, spread-spectrum pseudo code frequency, including：The cycle frequency for the up spread-spectrum pseudo code for spread-spectrum pseudo code frequency obtain after 1/M frequency dividings Rate, and the period frequency of the up spread-spectrum pseudo code obtained after being divided to 1/M carry out the 1/N times of out-hole run frame frame obtained after dividing Information rate during framing；According to the system clock, the observing and controlling number is produced by the second digital controlled oscillator and passes framework for intergration high-speed transfer frame volume Character rate after code coding；Wherein, character rate, including：The transmission obtained after 1/3 or 1/6 frequency dividing is carried out to character rate After the information rate of frame framing, and the frequency dividing of information rate progress 1/8 of the transmission frame framing to being obtained after 1/3 or 1/6 frequency dividing Effective byte speed during the transmission frame framing arrived.
- 7. the zero-range set constant calibration method according to claim 1 that integration is passed based on observing and controlling number, it is characterised in that described Opened according to the uplink temporal enabling nulse of incoherent spread spectrum system after alignment and the uplink temporal of high-speed transfer frame Gate pulse, respectively determine mission mode under under absolute value and calibration pattern apart from absolute value, including：Using the uplink temporal enabling nulse of the incoherent spread spectrum system after alignment as initial time, arrived with downstream modulation 64 , will be true according to initial time and stop timing along being the stop timing after last 1 sign bit of the 1st frame frame synchronization head in individual transmission frame Fixed time delay as under mission mode apart from absolute value；Using the uplink temporal enabling nulse of the high-speed transfer frame after alignment as initial time, arrived with downstream modulation every 64 It will be determined in transmission frame after last 1 sign bit of the 1st frame frame synchronization head along being the stop timing according to initial time and stop timing Time delay as under calibration pattern apart from absolute value.
- 8. the zero-range set constant calibration method that integration is passed based on observing and controlling number according to claim 1 or 7, it is characterised in that The difference apart from absolute value under absolute value and calibration pattern according under mission mode, it is determined that integrated answering machine Zero-range set constant, including：Rr=R01-R02+RbWherein, R01 represents to represent one apart from absolute value, Rr under absolute value, R02 expression calibration patterns under mission mode The zero-range set constant of body answering machine, Rb represent the time delay of the zero calibration frequency converter of logic analyser demarcation.
- 9. the zero-range set constant calibration method according to claim 1 that integration is passed based on observing and controlling number, it is characterised in thatIncoherent pulse per second (PPS) is star 2Hz.
- A kind of 10. zero-range set constant calibration system that integration is passed based on observing and controlling number, it is characterised in that including：First determining module, for passing one according to system clock, the spread-spectrum pseudo code frequency of incoherent spread spectrum system and observing and controlling number Change the character rate after system high-speed transfer frame coding, it is determined that resetting pulse per second (PPS)；Wherein, system clock, spread-spectrum pseudo code frequency and Character rate is respectively the integral multiple for resetting pulse per second (PPS), resets the integral multiple that pulse per second (PPS) is incoherent pulse per second (PPS)；Second determining module, for according to the reset pulse per second (PPS), determining that the uplink temporal of incoherent spread spectrum system opens the door Pulse and the uplink temporal enabling nulse of high-speed transfer frame；Alignment module, for by it is described it is incoherent spread spectrum system uplink temporal enabling nulse and high-speed transfer frame it is up Link Time enabling nulse aligns；3rd determining module, passed for the uplink temporal enabling nulse according to the incoherent spread spectrum system after alignment and high speed The uplink temporal enabling nulse of defeated frame, determine that the distance under absolute value and calibration pattern under mission mode is exhausted respectively To value；4th determining module, for according to the difference apart from absolute value under absolute value and calibration pattern under mission mode Value, it is determined that the zero-range set constant of integrated answering machine.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150287A (en) * | 2018-08-28 | 2019-01-04 | 西安空间无线电技术研究所 | A kind of incoherent clock area management method based on equal frame frequencies transmission |
| CN109581447A (en) * | 2018-12-06 | 2019-04-05 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | More Radio Link Combined Calculation Spread Spectrum TT&C equipment zero methods |
| CN109597098A (en) * | 2018-10-28 | 2019-04-09 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Spread Spectrum TT&C ground installation ranging zero method of real-time |
| CN109765527A (en) * | 2018-12-11 | 2019-05-17 | 中国人民解放军63921部队 | A kind of S frequency range multi-channel high-accuracy space flight ranging answering machine |
| CN109765576A (en) * | 2018-12-11 | 2019-05-17 | 中国人民解放军63921部队 | A kind of space flight answering machine precision distance measurement zero real time correction device |
| CN109798916A (en) * | 2018-12-11 | 2019-05-24 | 中国人民解放军63921部队 | A kind of ground installation ranging zero real-time correction method based on Spread Spectrum TT&C |
| CN110824412A (en) * | 2019-10-21 | 2020-02-21 | 西安空间无线电技术研究所 | Non-coherent spread spectrum transponder distance zero value high-precision measurement system |
| CN113794502A (en) * | 2021-09-02 | 2021-12-14 | 上海卫星工程研究所 | Mars surround device measurement and control data transmission integrated system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0304890A2 (en) * | 1987-08-24 | 1989-03-01 | Nec Corporation | Earth station capable of effectively using a frequency band of a satellite |
| CN101789859A (en) * | 2010-01-29 | 2010-07-28 | 中国科学院空间科学与应用研究中心 | Noncoherent distance measurement/time synchronism system of cluster link two-way asynchronous communication channel |
| CN104143997A (en) * | 2014-07-23 | 2014-11-12 | 西安空间无线电技术研究所 | Multi-access interference false locking resistance judgment method based on spread spectrum mechanism |
| CN104202116A (en) * | 2014-07-23 | 2014-12-10 | 西安空间无线电技术研究所 | Integrative method of measurement, control and data transmission based on Turbo coding |
| CN104459682A (en) * | 2014-11-18 | 2015-03-25 | 中国电子科技集团公司第十研究所 | Distance measurement method for automatically eliminating dynamic distance zero value |
| CN105897392A (en) * | 2014-12-15 | 2016-08-24 | 中国空间技术研究院 | Satellite-ground time synchronization system and method |
-
2017
- 2017-09-07 CN CN201710800938.5A patent/CN107797098B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0304890A2 (en) * | 1987-08-24 | 1989-03-01 | Nec Corporation | Earth station capable of effectively using a frequency band of a satellite |
| CN101789859A (en) * | 2010-01-29 | 2010-07-28 | 中国科学院空间科学与应用研究中心 | Noncoherent distance measurement/time synchronism system of cluster link two-way asynchronous communication channel |
| CN104143997A (en) * | 2014-07-23 | 2014-11-12 | 西安空间无线电技术研究所 | Multi-access interference false locking resistance judgment method based on spread spectrum mechanism |
| CN104202116A (en) * | 2014-07-23 | 2014-12-10 | 西安空间无线电技术研究所 | Integrative method of measurement, control and data transmission based on Turbo coding |
| CN104459682A (en) * | 2014-11-18 | 2015-03-25 | 中国电子科技集团公司第十研究所 | Distance measurement method for automatically eliminating dynamic distance zero value |
| CN105897392A (en) * | 2014-12-15 | 2016-08-24 | 中国空间技术研究院 | Satellite-ground time synchronization system and method |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109150287A (en) * | 2018-08-28 | 2019-01-04 | 西安空间无线电技术研究所 | A kind of incoherent clock area management method based on equal frame frequencies transmission |
| CN109150287B (en) * | 2018-08-28 | 2020-11-10 | 西安空间无线电技术研究所 | Incoherent clock domain management method based on equal frame frequency transmission |
| CN109597098A (en) * | 2018-10-28 | 2019-04-09 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Spread Spectrum TT&C ground installation ranging zero method of real-time |
| CN109581447A (en) * | 2018-12-06 | 2019-04-05 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | More Radio Link Combined Calculation Spread Spectrum TT&C equipment zero methods |
| CN109765527A (en) * | 2018-12-11 | 2019-05-17 | 中国人民解放军63921部队 | A kind of S frequency range multi-channel high-accuracy space flight ranging answering machine |
| CN109765576A (en) * | 2018-12-11 | 2019-05-17 | 中国人民解放军63921部队 | A kind of space flight answering machine precision distance measurement zero real time correction device |
| CN109798916A (en) * | 2018-12-11 | 2019-05-24 | 中国人民解放军63921部队 | A kind of ground installation ranging zero real-time correction method based on Spread Spectrum TT&C |
| CN109765527B (en) * | 2018-12-11 | 2021-03-19 | 中国人民解放军63921部队 | S-band multi-channel high-precision aerospace ranging responder |
| CN110824412A (en) * | 2019-10-21 | 2020-02-21 | 西安空间无线电技术研究所 | Non-coherent spread spectrum transponder distance zero value high-precision measurement system |
| CN110824412B (en) * | 2019-10-21 | 2022-05-24 | 西安空间无线电技术研究所 | Non-coherent spread spectrum transponder distance zero value high-precision measurement system |
| CN113794502A (en) * | 2021-09-02 | 2021-12-14 | 上海卫星工程研究所 | Mars surround device measurement and control data transmission integrated system and method |
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