CN109765546A - A kind of two-band precision distance measurement space flight ground system - Google Patents
A kind of two-band precision distance measurement space flight ground system Download PDFInfo
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Abstract
A kind of two-band precision distance measurement space flight ground system of the present invention, comprising: ranging base band (1), transmitting Digital front end (3), receives Digital front end (4), S high function amplifier (5), the high steady channel (6) of Ka uplink, Ka high function amplifier (7), S amplifiers (8), Ka amplifiers (9), Ka downlink high steady channel (10), primary antenna (11), zero equipment of school at digital switch matrix (2)；Zero equipment of school includes offset-fed antenna (12), S duplexer (13), S zero calibration frequency converter (14), Ka duplexer (15), Ka zero calibration frequency converter (16).The present invention can complete to carry out accurate bidirectional range measurement to the satellite for carrying precision distance measurement answering machine, it can also be used for carrying out the measurement of high-precision two-way range to other standard aircrafts, have the characteristics that measurement accuracy is high, it is larger to adapt to target dynamic, unambiguous distance is remote, strong antijamming capability, especially suitable for the high-precision measuring rail to satellite or spacecraft.
Description
Technical field
The invention belongs to space communication observation and control technology fields, are related to a kind of two-band precision distance measurement space flight ground system.
Background technique
In general traditional TT&C system, the ranging random error and System level gray correlation of ground system are correspondingly fixed at 1 meter or so
Rail precision is in dozens or even hundreds of rice magnitude.With the development of space exploration, the measurement rail demand of meter level has become aircraft
High-precision control and positioning must solve the problems, such as.
And in current ranging space flight ground system, it cannot achieve the ranging of two-band, be only capable of realizing in one-segment and survey
Away from causing use scope small, measurement accuracy is low, can not be suitable for the detection process wider space.
Summary of the invention
Problems to be solved by the invention are, in current ranging space flight ground system, to cannot achieve the ranging of two-band,
The problem of leading to not the detection process suitable for wider space.
Technological means for solving project is that the present invention proposes a kind of two-band precision distance measurement space flight ground system,
It realizes the high-precision range measurement to target aircraft, has measurement accuracy height, stabilization of equipment performance is good, and application scenarios are widely special
Point.
A kind of two-band precision distance measurement space flight ground system of the invention, comprising: ranging base band, digital switch matrix,
Emit Digital front end, receive the high steady channel of Digital front end, S high function amplifier, Ka uplink, Ka high function amplifier, S amplifications
Device, Ka amplifier, Ka downlink high steady channel, primary antenna, zero equipment of school；
The ranging base band generates digital uplink signal and remote signal inputs digital switch matrix, by digital switch matrix
Digital uplink signal is sent to transmitting Digital front end by selection switching；The transmitting Digital front end believes upstream digital
Number S frequency range uplink analog signal is converted to, and when system is currently operating in S frequency range, by the S frequency range uplink analog signal of output
It is radiate plus after setting power by primary antenna by S high function amplifier, and when system is currently operating in Ka frequency range, it will be defeated
S frequency range uplink analog signal out exports Ka frequency range uplink analog signal after the high steady channel of Ka uplink carries out variable-frequency filtering
And it is radiate after Ka high function amplifier is plus setting power by primary antenna；
The primary antenna receives downlink measuring signal, telemetered signal and the real-time school zero for carrying out zero equipment of self-correcting that satellite is sent
Signal, when system is currently operating in S frequency range, the received each signal of institute is inputted after S amplifiers amplify and is received by primary antenna
Digital front end, when system is currently operating in Ka frequency range, primary antenna successively puts the received each signal of institute through Ka amplifiers
The high steady channel of big and Ka downlink is filtered after frequency conversion the input in the form of S frequency range and receives Digital front end；By the reception number
Word front end passes through selection by digital switch matrix to digital switch matrix is inputted after the received signal analog-to-digital conversion of S frequency range
Switching carries out signal demodulation ranging to export corresponding downstream digital signal to ranging base band.
Further, as a preferred technical solution of the present invention: the ranging base band is by industrial personal computer and signal processing
Board group at.
Further, as a preferred technical solution of the present invention: the transmitting Digital front end uses DAC chip.
Further, as a preferred technical solution of the present invention: the reception Digital front end uses ADC chip.
Further, as a preferred technical solution of the present invention: zero equipment of school includes offset-fed antenna, S duplex
Device, S zero calibration frequency converter, Ka duplexer, Ka zero calibration frequency converter；The offset-fed antenna receives the S frequency range that primary antenna gives off respectively
With Ka frequency range uplink analog signal, S frequency range uplink analog signal is transmitted to S zero calibration frequency converter through S duplexer and switchs to real-time school
Zero-signal, and offset-fed antenna is transmitted to by S duplexer and is radiate；And Ka frequency range uplink analog signal is passed through Ka duplexer
It transports to Ka zero calibration frequency converter and switchs to real-time school zero-signal, and offset-fed antenna is transmitted to by Ka duplexer and is radiate.
Further, as a preferred technical solution of the present invention: the ranging base band is flat using narrow related and carrier wave
Sliding Pseudo Code Ranging Method carries out ranging.
Invention effect are as follows:
A kind of two-band precision distance measurement space flight ground system of the invention, it is straight to can use radio-frequency modulations technology, radio frequency
The many kinds of measures such as technology, narrow the relevant technologies, carrier smoothing pseudo-random code ranging technology, transmission simultaneous techniques are adopted, can be completed to carrying
There is the satellite (spacecraft) of precision distance measurement answering machine to carry out accurate bidirectional range measurement, it can also be used to other standard aircrafts
Carry out the measurement of high-precision two-way range.This system is high with measurement accuracy, adaptation target dynamic is larger, unambiguous distance is remote, anti-
The features such as interference performance is strong, especially suitable for the high-precision measuring rail to satellite (spacecraft).The present invention has compared to background technique
Following advantage:
1. a kind of spread spectrum surface high-acruracy survey directly sampled based on S frequency range RF direct modulation and radio frequency of the invention
System eliminates S band channels equipment, avoids influence of the S band channels to range accuracy, improves the digitlization journey of system
Degree, controls ranging random error and systematic error in centimetres；
2. the present invention proposes to monitor system zero in real time using offset-fed as the method for implementing school zero, effectively keep setting
Standby systematic error is in centimetres.
3. the invention proposes a kind of transmission simultaneous techniques, the transmission of digital signal is constrained and controlled, it is controlled
Delay stability of time guarantees that the variation of its distance measurement value as caused by switching on and shutting down in grade level, improves the reliability of ground system
And availability.
4. the present invention devises a whole set of Ground Nuclear Magnetic Resonance TT&C system using the above technical method, it includes digital sections
Point: the digital units such as precision distance measurement base band, S frequency range transmitting Digital front end, S UHF band reception Digital front end；Analog portion:
The components such as the high steady channel of Ka uplink, Ka downlink high steady channel, real-time zero equipment of school of S/Ka, antenna.Digitized degree is previous surveys
Not available for control system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of two-band precision distance measurement space flight ground system of the present invention.
Fig. 2 is the structural schematic diagram of zero equipment of school of the present invention.
Specific embodiment
Hereinafter, being described in detail based on attached drawing for the present invention.
As shown in Figure 1, the present invention devises a kind of two-band precision distance measurement space flight ground system, ranging is specifically included that
Base band 1, transmitting Digital front end 3, receives Digital front end 4, S high function amplifier 5, Ka uplink Gao Wenxin at digital switch matrix 2
Road 6, Ka high function amplifier 7, S amplifiers 8, Ka amplifiers 9, Ka downlink high steady channel 10, primary antenna 11, zero equipment of school.
Zero device structure of school as shown in Fig. 2, mainly include offset-fed antenna 12, S duplexer 13, S zero calibration frequency converter 14,
Ka duplexer 15, Ka zero calibration frequency converter 16.
Wherein, the precision distance measurement base band 1 of ground system is pure digi-tal high accuracy number base band, by industrial personal computer and signal
Board group is managed at offer optical fiber and digital entrance and High Performance FPGA on digiboard generate upstream digital intermediate-freuqncy signal and send number
Switch matrix receives the downlink signal that digital switch matrix is sent, and while completing incoherent spread spectrum measurement processing, utilization is narrow
Related and carrier smoothing pseudo-random code ranging method carries out ranging, improves range accuracy, reduces range error.
The digital switch matrix 2 is that uplink and downlink digital signal is switched branch, gives corresponding terminal device.The hair
It penetrates on Digital front end 3 and is provided with high-speed DAC chip, using radio-frequency modulations technology, the digital uplink signal of intermediate frequency is converted into S
Frequency range uplink analog radio-frequency signal, wherein guaranteeing delay stability of time using transmission simultaneous techniques.
It is provided with high-speed ADC chip on the reception Digital front end 4, directly adopts technology using radio frequency, by S frequency range downlink mould
The quasi- direct sample quantization of signal is intermediate frequency digital downlink signal, and using transmission simultaneous techniques, guarantees delay stability of time.The S
High power amplifier 5 is the power by S frequency range uplink analog signal plus setting, is sent to primary antenna 11.
The high steady channel 6 of the Ka uplink carries out high precision design to frequency mixer, local oscillator, filter and amplifier etc., reduces
Multi-channel operation is adjusted the distance the influence of error, completes to switch to S frequency range uplink analog signal variable-frequency filtering into Ka frequency range uplink simulation letter
Number function.
The Ka high function amplifier 7 is the power by Ka frequency range uplink analog signal plus setting, is sent to primary antenna 11.Institute
It states S amplifiers 8 and receives the S frequency range downstream analog signal that primary antenna 11 is sent, reception Digital front end 4 is given in amplification output.Institute
It states Ka amplifiers 9 and receives the Ka frequency range downstream analog signal that primary antenna 11 is brought, amplification output gives Ka downlink high steady channel
10.To frequency mixer, local oscillator, filter and amplifier etc. carry out high precision design, it is right to reduce its high steady channel 10 of the Ka downlink
The function that the filtering frequency conversion of Ka frequency range downstream analog signal is switched to S frequency range downstream analog signal is completed in the influence of range error.Institute
Primary antenna 11 is stated to radiate the uplink analog signal of uplink S or Ka frequency range, receive S or Ka downstream analog signal and in real time
School zero-signal.
The offset-fed antenna 12 is installed on the position after accurately calculating emulation, receives primary antenna 11 and gives off S or Ka
The uplink analog signal of frequency range gives off real-time school zero-signal.The S frequency range that the S duplexer 13 sends offset-fed antenna 12
For uplink analog signal transmission to S zero calibration frequency converter 14, the real-time school zero-signal that S zero calibration frequency converter 14 is changed is transferred to offset-fed day
Line 12.Wherein, S zero calibration frequency converter 14 does high precision design to frequency mixer, local oscillator, filter etc., and does thermostatic control to it, will
The S uplink analog signal that S duplexer is sent switchs to real-time school zero-signal and returns to S duplexer 13.
The uplink analog signal transmission for the Ka frequency range that the Ka duplexer 15 sends offset-fed antenna 12 gives the school Ka zero frequency conversion
Device 16, the real-time school zero-signal that Ka zero calibration frequency converter 16 is sent are transferred to offset-fed antenna 12.Wherein, Ka zero calibration frequency converter 16 is right
Frequency mixer, local oscillator, filter etc. do high precision design, and do thermostatic control to it, to meet wanting for discovering device zero drift
It asks, the Ka uplink analog signal that Ka duplexer 15 is sent is switched into real-time school zero-signal and returns to Ka duplexer 15.
The working principle of present system is:
Firstly, the ranging base band 1 generates the digital uplink signal and remote signal for being used for ranging, input in digital form
Digital uplink signal is sent to transmitting Digital front end 3 by selection switching by digital switch matrix 2 by digital switch matrix 2；
Digital uplink signal is converted to S frequency range uplink analog signal by the transmitting Digital front end 3, and is currently operating in system
When S frequency range, transmitting Digital front end 3 is by the S frequency range uplink analog signal of output by S high function amplifier 5 plus the function of setting
After rate, it is radiate by primary antenna 11.And when system is currently operating in Ka frequency range, emit S frequency of the Digital front end 3 by output
Duan Shanghang analog signal exports Ka frequency range uplink analog signal and through Ka after the high steady channel 6 of Ka uplink carries out variable-frequency filtering
High function amplifier 7, in addition being radiate after setting power by primary antenna 11.
Receive the S frequency range and Ka frequency range uplink analog signal that primary antenna 11 gives off respectively using the offset-fed antenna 12,
S frequency range uplink analog signal therein is transmitted to S zero calibration frequency converter 14 through S duplexer 13 and is switched to real-time school zero-signal,
And offset-fed antenna 12 is transmitted to by S duplexer 13 and is radiate；And by Ka frequency range uplink analog signal therein through Ka duplex
Device 15 is transmitted to Ka zero calibration frequency converter 16 and is switched to real-time school zero-signal, and is transmitted to offset-fed antenna 12 by Ka duplexer 15
It radiate.
Then, the primary antenna 11 receives the downlink measuring signal, telemetered signal and carry out zero equipment of self-correcting that satellite sends
Real-time school zero-signal.
When system is currently operating in S frequency range, primary antenna 11 is defeated after S amplifiers 8 amplify by the received each signal of institute
Enter to receive Digital front end 4, is inputted after completing analog-to-digital conversion by received signal of the reception Digital front end 4 to S frequency range
Digital switch matrix 2, by digital switch matrix 2 by selection switching setting, to export the downstream digital signal of corresponding intermediate frequency extremely
Ranging base band 1, high-precision ranging base band 1 complete the functions such as signal demodulation, precision distance measurement, telemetering and small ring.
When system is currently operating in Ka frequency range, primary antenna 11 successively puts the received each signal of institute through Ka amplifiers 9
After the high steady channel 10 of big and Ka downlink is filtered frequency conversion, input receives Digital front end 4 in the form of S frequency range；It is connect by described
It receives after Digital front end 4 completes analog-to-digital conversion to the received signal of S frequency range and inputs digital switch matrix 2, by digital switch square
Battle array 2 is by selection switching setting, to export the downstream digital signal of corresponding intermediate frequency to ranging base band 1, high-precision ranging base band 1
Complete the functions such as signal demodulation, precision distance measurement, telemetering and small ring.
This system directly adopts technology, narrow the relevant technologies, carrier smoothing pseudo-random code ranging skill using channel radio frequency modulation technique, radio frequency
Art, transmission simultaneous techniques, can complete to carry precision distance measurement answering machine satellite or spacecraft carry out accurate bidirectional away from
From measurement, it can also be used to carry out the measurement of high-precision two-way range to other standard aircrafts.This system has measurement accuracy high, suitable
The features such as target dynamic is larger, unambiguous distance is remote, strong antijamming capability is answered, especially suitable for the high-precision of satellite or spacecraft
Degree measurement rail.
It should be noted that described above is only the preferred embodiment of the present invention, it should be understood that for art technology
For personnel, several changes and improvements can also be made under the premise of not departing from the technology of the present invention design, these are included in
In protection scope of the present invention.
Claims (6)
1. a kind of two-band precision distance measurement space flight ground system characterized by comprising ranging base band (1), digital switch square
Battle array (2), transmitting Digital front end (3) receive Digital front end (4), S high function amplifier (5), Ka uplink high steady channel (6), Ka
High function amplifier (7), S amplifiers (8), Ka amplifiers (9), the high steady channel (10) of Ka downlink, primary antenna (11), school zero are set
It is standby；
The ranging base band (1) generates digital uplink signal and remote signal input digital switch matrix (2), by digital switch square
Digital uplink signal is sent to transmitting Digital front end (3) by selection switching by battle array (2)；The transmitting Digital front end (3)
Digital uplink signal is converted into S frequency range uplink analog signal, and when system is currently operating in S frequency range, by the S frequency range of output
Uplink analog signal is radiate after adding setting power by S high function amplifier (5) by primary antenna (11), and current in system
Work is in Ka frequency range, by the S frequency range uplink analog signal of output after the high steady channel (6) of Ka uplink carries out variable-frequency filtering,
Output Ka frequency range uplink analog signal is simultaneously radiate after Ka high function amplifier (7) is plus setting power by primary antenna (11)；
The primary antenna (11) receives downlink measuring signal, telemetered signal and the real-time school zero for carrying out zero equipment of self-correcting that satellite is sent
Signal, when system is currently operating in S frequency range, primary antenna (11) is defeated after S amplifiers (8) are amplified by the received each signal of institute
Enter to receive Digital front end (4), when system is currently operating in Ka frequency range, primary antenna (11) successively passes through the received each signal of institute
Ka amplifier (9) amplifications and the high steady channel (10) of Ka downlink are filtered after frequency conversion the input in the form of S frequency range and receive number
Change front end (4)；By reception Digital front end (4) to input digital switch square after the received signal analog-to-digital conversion of S frequency range
Battle array (2) is exported corresponding downstream digital signal to ranging base band (1) by selection switching by digital switch matrix (2) and carried out
Signal demodulation ranging.
2. two-band precision distance measurement space flight ground system according to claim 1, which is characterized in that the ranging base band
(1) it is made of industrial personal computer and signal-processing board.
3. two-band precision distance measurement space flight ground system according to claim 1, which is characterized in that the transmitting number
Change front end (3) and uses DAC chip.
4. two-band precision distance measurement space flight ground system according to claim 1, which is characterized in that the reception number
Change front end (4) and uses ADC chip.
5. two-band precision distance measurement space flight ground system according to claim 1, which is characterized in that zero equipment of school
Including offset-fed antenna (12), S duplexer (13), S zero calibration frequency converter (14), Ka duplexer (15), Ka zero calibration frequency converter (16)；Institute
It states offset-fed antenna (12) and receives the S frequency range and Ka frequency range uplink analog signal that primary antenna (11) gives off respectively, by S frequency range uplink
Analog signal is transmitted to S zero calibration frequency converter (14) through S duplexer (13) and switchs to real-time school zero-signal, and passes through S duplexer (13)
Offset-fed antenna (12) is transmitted to radiate；And Ka frequency range uplink analog signal is transmitted to the school Ka zero through Ka duplexer (15) and is become
Frequency device (16) switchs to real-time school zero-signal, and is transmitted to offset-fed antenna (12) by Ka duplexer (15) and radiate.
6. two-band precision distance measurement space flight ground system according to claim 1, which is characterized in that the ranging base band
(1) ranging is carried out using narrow related and carrier smoothing Pseudo Code Ranging Method.
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| CN111638502A (en) * | 2020-04-29 | 2020-09-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Time-base-based transmitting one-way zero-value ranging system for measurement and control communication ground station |
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| CN115314066A (en) * | 2022-07-20 | 2022-11-08 | 中国科学院微小卫星创新研究院 | Measurement and control communication device and method for deep space exploration spacecraft |
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| CN114598378A (en) * | 2022-02-25 | 2022-06-07 | 中国人民解放军63921部队 | Spacecraft load data distribution device and method |
| CN114598378B (en) * | 2022-02-25 | 2023-08-15 | 中国人民解放军63921部队 | Spacecraft load data distribution device and method |
| CN115314066A (en) * | 2022-07-20 | 2022-11-08 | 中国科学院微小卫星创新研究院 | Measurement and control communication device and method for deep space exploration spacecraft |
| CN115314066B (en) * | 2022-07-20 | 2023-10-27 | 中国科学院微小卫星创新研究院 | Measurement and control communication device and method for deep space exploration spacecraft |
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