CN107390184A - A kind of signal correction system and method - Google Patents
A kind of signal correction system and method Download PDFInfo
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- CN107390184A CN107390184A CN201710765183.XA CN201710765183A CN107390184A CN 107390184 A CN107390184 A CN 107390184A CN 201710765183 A CN201710765183 A CN 201710765183A CN 107390184 A CN107390184 A CN 107390184A
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- Prior art keywords
- signal
- low noise
- noise amplification
- echo
- coupled
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
- G01S7/32—Shaping echo pulse signals; Deriving non-pulse signals from echo pulse signals
Abstract
The present invention relates to a kind of signal correction system and method, the signal correction system includes：Coupling module, receiving channel module, power splitter A, power splitter B and processor；A kind of method is further related to, this method includes：Receive test signal；Coupling processing is carried out to the test signal, obtains coupled signal；Low noise amplification processing is carried out to the coupled signal, obtains the signal after low noise amplification；Signal is transmitted again, obtains test signal；According to the test signal of the current amplification and the test signal of last amplification, amplitude difference and phase difference are determined；The echo-signal of pre-receiving is corrected according to amplitude difference and phase difference, obtains correct echo-signal.Receiving channel can be tested out to amplitude difference caused by signal and phase difference by the present invention, and the echo-signal of correct radar reception can be calculated according to the amplitude difference and phase difference.
Description
Technical field
The invention belongs to radar signal to receive field, more particularly to a kind of signal correction system and method.
Background technology
Receiving unit is used to transmit the microwave signal received by antenna, has amplitude limit, amplification and signal complex functionality, typically
It is made up of multipath reception passage.
Each receiving channel causes to form amplitude difference between signal due to the individual difference of component and differing for transmission path
And phase difference.Electronic component has temperature drift characteristic, and signal amplitude and phase can change with the change of temperature, but due to
The individual difference of component, causes between receiving channel that the amplitude of signal and phase place change are inconsistent, makes amplitude difference and phase difference
Change, the change of phase difference, which can make to calculate during Radar Signal Processing, deviation occurs, causes radar test deterioration in accuracy.
And traditional receiving unit includes 4 receiving channels and 1 power splitter, each receiving channel includes：It is limiter, low
Noise amplifier and isolator.Function is simple, the amplitude difference and phase data that receive interchannel can not be acquired, therefore
Amplitude difference and phase difference caused by the echo-signal that receiving channel receives to radar can not be known, also can not just be calculated correctly
The echo-signal that radar receives.
The content of the invention
The technical problems to be solved by the invention are：Existing technology can not know the echo that receiving channel receives to radar
Amplitude difference caused by signal and phase difference, so the echo-signal that correct radar receives can not be obtained.
To solve technical problem above, the invention provides a kind of signal correction system, the correction system includes：Successively
Power splitter A, coupling module, receiving channel module, power splitter B and the processor of connection；
The power splitter A, for receiving test signal；
The coupling module, for being coupled to the test signal, obtain coupled signal；
The receiving channel module, for carrying out low noise amplification processing to the coupled signal, obtain low noise amplification
Signal；
The power splitter B, for carrying out signal transacting, the test signal being amplified to the low noise amplification signal；
The processor, for the test of the test signal according to the current amplification and last amplification letter
Number, amplitude difference and phase difference are determined, and the echo-signal of pre-receiving is corrected according to the amplitude difference and phase difference, obtain
Correct echo-signal.
Beneficial effects of the present invention：By above-mentioned system, receiving channel can be tested out to amplitude difference caused by signal
And phase difference, and the echo-signal that correct radar receives can be calculated according to the amplitude difference and phase difference.
Further, the coupling module includes：
4 couplers arranged side by side；4 couplers are connected with the power splitter A respectively, and each coupler is used to connect
Receive the test signal of a quarter.
Above-mentioned further beneficial effect：Test signal is coupled by above-mentioned coupler, is advantageous to follow-up obtain
To being accurately inferred to amplitude difference and phase difference.
Further, the receiving channel module includes：4 receiving channels arranged side by side；Each receiving channel is corresponding
Ground is connected with a coupler, and each receiving channel is used to receive the coupling that the corresponding coupler exports
Close signal.
Further, each receiving channel includes：Limiter, low-noise amplifier and the isolator being sequentially connected；
The limiter, for judging whether the range value of the coupled signal is more than predetermined amplitude threshold value, when less than when,
The coupled signal is delivered directly to the low-noise amplifier；
When more than when, the range value of the coupled signal is adjusted to the predetermined amplitude threshold value, then by the institute after adjustment
State coupled signal and be conveyed to the low-noise amplifier；
The low-noise amplifier, for being carried out by the coupled signal of the limiter at low noise amplification
Reason, obtains low noise amplification signal；
The isolator, for carrying out isolation processing to the low noise amplification signal, and by described in after isolation processing
Low noise amplification signal is one-way transmitted to the power splitter B.
Above-mentioned further beneficial effect：, can be by the signal when more than predetermined amplitude threshold value by the amplitude limit of limiter
Amplitude be adjusted, thus be avoided that prevent input signal amplitude it is too big, burn rear end low-noise amplifier.
Further, the power splitter B is connected with the isolator, for the low noise amplification after isolation processing
Signal carries out signal transacting, the test signal being amplified.
Above-mentioned further beneficial effect：Isolation processing, advantageously reduce the reflected energy loss of signal.
Further, the echo-signal of the pre-receiving, the echo-signal of the pre-receiving, it is via the receiving channel
The echo-signal that module and the power splitter B receive to radar is handled what is obtained.
The invention further relates to a kind of signal antidote, the signal antidote includes：
S1, receive test signal；
S2, coupling processing is carried out to the test signal, obtains coupled signal；
S3, low noise amplification processing is carried out to the coupled signal, obtains low noise amplification signal；
S4, signal transacting, the test signal being amplified are carried out to the low noise amplification signal；
S5, according to the test signal of the current amplification and the test signal of the last amplification, determine amplitude
Difference and phase difference；
S6, the echo-signal of pre-receiving is corrected according to the amplitude difference and phase difference, obtain correct echo letter
Number.
Beneficial effects of the present invention：By above-mentioned method, receiving channel can be tested out to amplitude difference caused by signal
And phase difference, and the echo-signal that correct radar receives can be calculated according to the amplitude difference and phase difference.
Further, the S3 includes：
The S3 includes：
S31, judges whether the range value of the coupled signal is more than predetermined amplitude threshold value,
When less than when, to the coupled signal carry out low noise amplification processing, obtain low noise amplification signal；
When more than when, the range value of the coupled signal is adjusted to the predetermined amplitude threshold value, and to the institute after adjustment
State coupled signal and carry out low noise amplification processing, obtain low noise amplification signal；
S32, isolation processing is carried out to the low noise amplification signal.
Above-mentioned further beneficial effect：, can be by the signal when more than predetermined amplitude threshold value by the amplitude limit of limiter
Amplitude be adjusted, thus be avoided that prevent input signal amplitude it is too big, burn rear end low-noise amplifier.
Further, the S4 includes：Signal transacting is carried out to the low noise amplification signal after isolation processing, obtained
To the test signal of amplification.
Above-mentioned further beneficial effect：Isolation processing, advantageously reduce the reflected energy loss of signal.
Further, the echo-signal of the pre-receiving, it is by being handled to obtain to the echo-signal that radar receives
's.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of signal correction system of the embodiment of the present invention 1；
Fig. 2 is a kind of structural representation of signal correction system of the embodiment of the present invention；
Fig. 3 is a kind of flow chart of signal antidote of the embodiment of the present invention.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in figure 1, the embodiment of the present invention 1 provides a kind of signal correction system, the correction system includes：It is sequentially connected
Power splitter A, coupling module, receiving channel module, power splitter B and processor；
The power splitter A, for receiving test signal；
The coupling module, for being coupled to the test signal, obtain coupled signal；
The receiving channel module, for carrying out low noise amplification processing to the coupled signal, obtain low noise amplification
Signal；
The power splitter B, for carrying out signal transacting, the test signal being amplified to the low noise amplification signal；
The processor, for the test of the test signal according to the current amplification and last amplification letter
Number, amplitude difference and phase difference are determined, and the echo-signal of pre-receiving is corrected according to the amplitude difference and phase difference, obtain
Correct echo-signal.
It should be noted that being by above-mentioned system in the present embodiment 1, receiving channel can be tested out signal is produced
Raw amplitude difference and phase difference, and the echo that correct radar receives can be calculated according to the amplitude difference and phase difference and believed
Number.
Alternatively, as shown in Fig. 2 coupling module includes described in another embodiment 2：
4 couplers arranged side by side；4 couplers are connected with the power splitter A respectively, and each coupler is used to connect
Receive the test signal of a quarter.
It should be noted that it is under test job state in the present embodiment 2, test signal initially enters one point of four work(
Divide device A that signal is divided into 4 tunnels, into different receiving channels.Test signal is coupled by above-mentioned coupler, had
Beneficial to being subsequently accurately inferred to amplitude difference and phase difference.
Alternatively, as shown in Fig. 2 receiving channel module includes described in another embodiment 3：4 receptions arranged side by side are led to
Road；Each receiving channel is accordingly connected with a coupler, and each receiving channel is used to receive and it
The coupled signal of the corresponding coupler output.
Alternatively, as shown in Fig. 2 each receiving channel includes in another embodiment 4：The amplitude limit being sequentially connected
Device, low-noise amplifier and isolator；
The limiter, for judging whether the range value of the coupled signal is more than predetermined amplitude threshold value, when less than when,
The coupled signal is delivered directly to the low-noise amplifier；
When more than when, the range value of the coupled signal is adjusted to the predetermined amplitude threshold value, then by the institute after adjustment
State coupled signal and be conveyed to the low-noise amplifier；
The low-noise amplifier, for being carried out by the coupled signal of the limiter at low noise amplification
Reason, obtains low noise amplification signal；
The isolator, for carrying out isolation processing to the low noise amplification signal, and by described in after isolation processing
Low noise amplification signal is one-way transmitted to the power splitter B.
It should be noted that be that the input port of limiter is the signal input part of receiving channel in the present embodiment 4,
It is input of the test signal after coupler couples, the output end of limiter and the input of low-noise amplifier connect,
The output end of low-noise amplifier and the input of isolator connect, the output end of isolator and one point of four power splitter B input
End connection.By the amplitude limit of limiter, when more than predetermined amplitude threshold value, the amplitude of the signal being adjusted, so kept away
Exempt to prevent that the signal amplitude of input is too big, burn rear end low-noise amplifier.
Alternatively, power splitter B is connected with the isolator described in another embodiment 5, after to isolation processing
The low noise amplification signal carries out signal transacting, the test signal being amplified.
It should be noted that the isolation processing in the present embodiment 5, advantageously reduces the reflected energy loss of signal.
Alternatively, the echo-signal of the pre-receiving described in another embodiment 6, the echo-signal of the pre-receiving, be through
Handled what is obtained by the receiving channel module and the power splitter B echo-signal received to radar.
It should be noted that the echo-signal of the pre-receiving its be that radar reception is returned by the receiving channel module
Ripple signal carries out low noise amplification processing, obtains the echo-signal after low noise amplification；Again by the power splitter B to the low noise
Echo-signal after sound amplification is handled what is obtained.
It is in the case where receiving working condition in the present embodiment 6, the echo-signal that radar receives enters limiter, limiter
Effect is that rear end low-noise amplifier is burnt in the input for preventing big signal, and then signal is successively by low-noise amplifier, isolation
Device and one point of four power splitter B be amplified after echo-signal.
Correspondingly, as shown in figure 3, the embodiment of the present invention 7 further relates to a kind of signal antidote, the signal antidote bag
Include：
The signal antidote includes：
S1, receive test signal；
S2, coupling processing is carried out to the test signal, obtains coupled signal；
S3, low noise amplification processing is carried out to the coupled signal, obtains low noise amplification signal；
S4, signal transacting, the test signal being amplified are carried out to the low noise amplification signal；
S5, according to the test signal of the current amplification and the test signal of the last amplification, determine amplitude
Difference and phase difference；
S6, the echo-signal of pre-receiving is corrected according to the amplitude difference and phase difference, obtain correct echo letter
Number.
It should be noted that receiving channel can be tested out in the present embodiment 7 to amplitude difference caused by signal and phase
Difference, and the echo-signal that correct radar receives can be calculated according to the amplitude difference and phase difference.
Alternatively, S3 includes described in another embodiment 8：
S31, judges whether the range value of the coupled signal is more than predetermined amplitude threshold value,
When less than when, to the coupled signal carry out low noise amplification processing, obtain low noise amplification signal；
When more than when, the range value of the coupled signal is adjusted to the predetermined amplitude threshold value, and to the institute after adjustment
State coupled signal and carry out low noise amplification processing, obtain low noise amplification signal；
S32, isolation processing is carried out to the low noise amplification signal.
It should be noted that be that the input port of limiter is the signal input part of receiving channel in the present embodiment 8,
And input of the test signal after coupler couples, the output end of limiter and the input of low-noise amplifier connect
Connect, the input of the output end of low-noise amplifier and isolator connects, and the output end of isolator is defeated with one point of four power splitter B's
Enter end connection.By the amplitude limit of limiter, when more than predetermined amplitude threshold value, the amplitude of the signal being adjusted, so
Avoid preventing that the signal amplitude of input is too big, burn rear end low-noise amplifier.
Alternatively, S4 includes described in another embodiment 9：The low noise amplification signal after isolation processing is entered
Row signal transacting, the test signal being amplified.
It should be noted that the isolation processing in the present embodiment 9, advantageously reduces the reflected energy loss of signal.
Alternatively, the echo-signal of the pre-receiving described in another embodiment 10, believed by the echo received to radar
Number handled what is obtained.
It should be noted that the echo-signal of the pre-receiving, it is to carry out low noise to the echo-signal that radar receives
Enhanced processing, obtain the echo-signal after low noise amplification；Again the echo-signal after the low noise amplification handle
Arrive.
It should be noted that being in the case where receiving working condition in the present embodiment 10, the echo-signal that radar receives enters
Limiter, the effect of limiter are that rear end low-noise amplifier is burnt in the input for preventing big signal, and then signal is successively through too low
Noise amplifier, isolator and one point of four power splitter B be amplified after echo-signal.
In this manual, identical embodiment or example are necessarily directed to the schematic representation of above-mentioned term.
Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example with suitable
Mode combines.In addition, in the case of not conflicting, those skilled in the art can be by the difference described in this specification
Embodiment or example and the feature of different embodiments or example are combined and combined.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of signal correction system, it is characterised in that the correction system includes：The power splitter A that is sequentially connected, coupling module,
Receiving channel module, power splitter B and processor；
The power splitter A, for receiving test signal；
The coupling module, for being coupled to the test signal, obtain coupled signal；
The receiving channel module, for carrying out low noise amplification processing to the coupled signal, obtain low noise amplification signal；
The power splitter B, for carrying out signal transacting, the test signal being amplified to the low noise amplification signal；
The processor, the test signal of the amplification current for basis and the test signal of the last amplification,
Amplitude difference and phase difference are determined, and the echo-signal of pre-receiving is corrected according to the amplitude difference and phase difference, is obtained just
True echo-signal.
2. correction system according to claim 1, it is characterised in that the coupling module includes：4 couplings arranged side by side
Device；4 couplers are connected with the power splitter A respectively, and the test of each coupler for receiving a quarter
Signal.
3. correction system according to claim 2, it is characterised in that the receiving channel module includes：4 arranged side by side to connect
Receive passage；Each receiving channel is accordingly connected with a coupler, and each receiving channel is used to receive
The coupled signal of corresponding coupler output.
4. correction system according to claim 3, it is characterised in that each receiving channel includes：It is sequentially connected
Limiter, low-noise amplifier and isolator；
The limiter, for judging whether the range value of the coupled signal is more than predetermined amplitude threshold value, when less than when, by institute
State coupled signal and be delivered directly to the low-noise amplifier；
When more than when, the range value of the coupled signal is adjusted to the predetermined amplitude threshold value, then by the coupling after adjustment
Close signal and be conveyed to the low-noise amplifier；
The low-noise amplifier, for carrying out low noise amplification processing by the coupled signal of the limiter, obtaining
To low noise amplification signal；
The isolator, for carrying out isolation processing to the low noise amplification signal, and by the low noise after isolation processing
Sound amplified signal is one-way transmitted to the power splitter B.
5. correction system according to claim 4, it is characterised in that the power splitter B is connected with the isolator, is used for
Signal transacting, the test signal being amplified are carried out to the low noise amplification signal after isolation processing.
6. according to the correction system described in claim 1-5, it is characterised in that the echo-signal of the pre-receiving, be via institute
State the echo-signal that receiving channel module and the power splitter B receive to radar and handled what is obtained.
7. a kind of signal antidote, it is characterised in that using any described signal correction systems of the 1-6, the signal is rectified
Correction method includes：
S1, receive test signal；
S2, coupling processing is carried out to the test signal, obtains coupled signal；
S3, low noise amplification processing is carried out to the coupled signal, obtains low noise amplification signal；
S4, signal transacting, the test signal being amplified are carried out to the low noise amplification signal；
S5, according to the test signal of the current amplification and the test signal of the last amplification, determine amplitude difference and
Phase difference；
S6, the echo-signal of pre-receiving is corrected according to the amplitude difference and phase difference, obtain correct echo-signal.
8. antidote according to claim 7, it is characterised in that the S3 includes：
S31, judges whether the range value of the coupled signal is more than predetermined amplitude threshold value,
When less than when, to the coupled signal carry out low noise amplification processing, obtain low noise amplification signal；
When more than when, the range value of the coupled signal is adjusted to the predetermined amplitude threshold value, and to the coupling after adjustment
Close signal and carry out low noise amplification processing, obtain low noise amplification signal；
S32, isolation processing is carried out to the low noise amplification signal.
9. antidote according to claim 8, it is characterised in that the S4 includes：Described in after isolation processing
Low noise amplification signal carries out signal transacting, the test signal being amplified.
10. according to the antidote described in claim 7-9, it is characterised in that the echo-signal of the pre-receiving, be by right
The echo-signal that radar receives is handled what is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710765183.XA CN107390184B (en) | 2017-08-30 | 2017-08-30 | A kind of signal correction system and method |
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| CN201710765183.XA CN107390184B (en) | 2017-08-30 | 2017-08-30 | A kind of signal correction system and method |
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| CN107390184A true CN107390184A (en) | 2017-11-24 |
| CN107390184B CN107390184B (en) | 2019-11-08 |
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| CN102175994A (en) * | 2011-03-11 | 2011-09-07 | 江苏北方电子有限公司 | Receiving phase reference made weather radar |
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| CN204462380U (en) * | 2015-03-27 | 2015-07-08 | 四川九洲空管科技有限责任公司 | A kind of equipment for checking secondary radar system interrogation and answering |
| CN104980180A (en) * | 2015-06-18 | 2015-10-14 | 成都广迈科技有限公司 | Microwave transceiver |
| CN106357351A (en) * | 2015-07-17 | 2017-01-25 | 上海华虹集成电路有限责任公司 | Phased-array calibration system and method |
| CN106941359A (en) * | 2017-01-12 | 2017-07-11 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The high-power low-noise reception front end of millimeter wave |
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2017
- 2017-08-30 CN CN201710765183.XA patent/CN107390184B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175994A (en) * | 2011-03-11 | 2011-09-07 | 江苏北方电子有限公司 | Receiving phase reference made weather radar |
| CN104133209A (en) * | 2014-06-27 | 2014-11-05 | 中国电子科技集团公司第三十八研究所 | Integrated radar system for target searching and meteorological detection and method thereof |
| CN204462380U (en) * | 2015-03-27 | 2015-07-08 | 四川九洲空管科技有限责任公司 | A kind of equipment for checking secondary radar system interrogation and answering |
| CN104980180A (en) * | 2015-06-18 | 2015-10-14 | 成都广迈科技有限公司 | Microwave transceiver |
| CN106357351A (en) * | 2015-07-17 | 2017-01-25 | 上海华虹集成电路有限责任公司 | Phased-array calibration system and method |
| CN106941359A (en) * | 2017-01-12 | 2017-07-11 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The high-power low-noise reception front end of millimeter wave |
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