CN106597362B - A kind of signal phase synchronizing device and method for radar base station - Google Patents
A kind of signal phase synchronizing device and method for radar base station Download PDFInfo
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- CN106597362B CN106597362B CN201611064392.3A CN201611064392A CN106597362B CN 106597362 B CN106597362 B CN 106597362B CN 201611064392 A CN201611064392 A CN 201611064392A CN 106597362 B CN106597362 B CN 106597362B
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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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0081—Transmission between base stations
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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
- G01S7/003—Transmission of data between radar, sonar or lidar systems and remote stations
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Abstract
The present invention relates to a kind of signal phase synchronizing device and method for radar base station, which includes: sequentially connected signal compensation circuit, optical cable and signal optimization circuit, and signal compensation circuit is for obtaining main website input signal Fin, and by FinIt is divided into four tunnels, using any road as main website output signal Flocal, excess-three road signal is respectively Fa、FbAnd Fc, and obtain secondary station input signal Fn, to FnRespectively and Fa、FbBetween phase difference detected and compensated, and according to FcAnd FnBetween phase relation obtain signal Fp；Signal optimization circuit is for obtaining and optimizing Fp, obtain secondary station output signal.It is synchronous that the present invention realizes the signal high precision frequency plot between main website output signal and secondary station output signal, and phase relation when can correct booting between main website output signal and secondary station output signal, keep the frequency plot of the signal between radar primary and secondary stations more stable accurate.
Description
Technical field
The present invention relates to field of signal transmissions more particularly to a kind of for the signal phase synchronizing device of radar base station and side
Method.
Background technique
Modern radar system just develops towards distributed, more base station direction, the signal frequency Phase synchronization between more base stations
It is the critical issue that multi-static radar system needs to solve.The phase locked purpose of signal frequency is made between each base station
Signal realize coherent, with guarantee multiple Base Transmitters or receive signal coherent can synthesize processing.
The existing signal phase synchronizing device for radar base station includes: master station signal source, main website optical transceiver and light
Cable, phase discriminator, auxiliary phase detector, Phase synchronization controller, secondary station optical circulator, optical power distributor and optimizer of mutually making an uproar, the device
Frequency signal can be passed through into optical cable transmission to radar secondary station from radar main website, use the groups such as phase discriminator and Phase synchronization controller
At feedback control loop measure and compensate the phase fluctuation of optical cable transmission signal introducing, realize signal frequency between primary and secondary stations
High-precise synchronization.Although it is synchronous that the signal high precision frequency plot between primary and secondary stations may be implemented in above-mentioned apparatus, deposit
In each uncertain problem of starting-up signal phase, which can not solve the problems, such as this.
Summary of the invention
The technical problem to be solved by the present invention is to for the existing signal phase synchronizing device for radar base station without
Method makes to be switched on the problem that phase determines, provides a kind of signal phase synchronizing device and method for radar base station, solves point
The initial phase stability of the problem of signal phase fluctuation of more base station radars such as cloth radar or multistatic radar and signal
Problem.
The technical scheme to solve the above technical problems is that
A kind of signal phase synchronizing device for radar base station, comprising: sequentially connected signal compensation circuit, optical cable and
Signal optimizes circuit, wherein
The signal compensation circuit is connect with radar main website, for obtaining main website input signal Fin, and by the FinIt is divided into
Four tunnels, using any road as main website output signal Flocal, excess-three road signal is respectively Fa、FbAnd Fc, and pass through the light
Cable obtains secondary station input signal F from signal optimization circuitn, according to the Fn, the FaWith the Fb, main website is exported and is believed
Phase difference number between secondary station output signal is detected and is compensated, and according to the FnWith the Fc, to the radar base station
Initial phase relationship when booting between the radar main website and the radar secondary station is detected and is corrected, and signal F is obtainedp；
The signal optimization circuit is connect with radar secondary station, is used for the FnThe signal is sent to by the optical cable
Compensation circuit is obtained by the optical cable and optimizes the Fp, obtain secondary station output signal Fremote。
The beneficial effects of the present invention are: a kind of signal phase synchronizing device for radar base station provided by the invention, leads to
It crosses signal compensation circuit to compensate the phase difference between main website output signal and secondary station output signal, and corrects booting phase
Relationship then by optical cable transmission signal, and optimizes circuit by signal and exports to secondary station output signal, realizes main website
Signal high precision frequency plot between output signal and secondary station output signal is synchronous, and can correct main website output signal when being switched on
Phase relation between secondary station output signal keeps the frequency plot of the signal between radar primary and secondary stations more stable accurate.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the signal compensation circuit includes: the first power splitter, the first phase discriminator, the second phase discriminator, third mirror
Phase device, the second power splitter, Phase synchronization controller, phase restorer, third power splitter, modulator, the first demodulator and
One optical circulator, wherein
The input terminal of first power splitter is connect with the radar main website, and output end a is for exporting the Flocal, output
End b is connect with the input terminal a of first phase discriminator, and output end c is connect with the input terminal a of second phase discriminator, output end d
It is connect with the input terminal a of the third phase discriminator；
The input terminal b of first phase discriminator is connect with the output end a of the third power splitter, output end and the phase
The input terminal a connection of isochronous controller；
The input terminal b of second phase discriminator is connect with the output end a of second power splitter, output end and the phase
The input terminal b connection of isochronous controller；
The input terminal b of the third phase discriminator is connect with the output end b of second power splitter, output end and the phase
The input terminal a connection of restorer；
The input terminal of second power splitter is connect with the output end of first demodulator；
The output end of the Phase synchronization controller is connect with the input terminal b of the phase restorer；
The output end of the phase restorer is connect with the input terminal of the third power splitter；
The output end b of the third power splitter and the input terminal of modulator connect；
The output end of the modulator is connect with the input terminal of first optical circulator；
The input terminal of first demodulator is connect with the output end of first optical circulator；
The bidirectional port of first optical circulator is connect with the optical cable.
Further, first power splitter is for obtaining the Fin, and by the FinIt is divided into four tunnels, it will be any
Road is as the Flocal, and obtain its excess-three road signal Fa、FbAnd Fc；
First phase discriminator is for obtaining the Fa, and obtain the signal F of the third power splitter outputd, and to described
FaWith the FdIt measures, obtains phase differencea；
Second phase discriminator is for obtaining the Fb, and obtain the signal F of the second power splitter outpute, and to described
FbWith the FeIt measures, obtains phase differenceb；
The third phase discriminator is for obtaining the Fc, and obtain the signal F of the second power splitter outputf, and to described
FcWith the FfIt measures, obtains phase differencec；
Second power splitter is used to obtain the signal F of the first demodulator outputm, and by the FmIt is divided into two-way, point
The F is not obtainedeWith the Ff；
The Phase synchronization controller is for obtaining the φaWith the φb, to the φaWith the φbIt synchronizes
Control, obtains signal Fg；
The phase restorer is for obtaining the φcWith the Fg, and to the φcIt is detected, as the φcNo
When for preset value, to the FgPhase reset is carried out, signal F is obtainedh；
The third power splitter is for obtaining the Fh, and by the FhIt is divided into two-way, respectively obtains signal FjWith the letter
Number Fd；
The modulator is for obtaining the Fj, to the FjIt is modulated, obtains signal Fk；
First demodulator is used to obtain the signal F of the first optical circulator outputl, and to the FlIt is demodulated,
Obtain the Fm；
First optical circulator is for obtaining the FkAnd export the Fp, obtain the FnAnd export the Fl。
Further, the signal optimization circuit includes: the second optical circulator, optical power distributor, the second demodulator and mutually makes an uproar
Optimizer, wherein
The bidirectional port of second optical circulator is connect with the optical cable, the input terminal of output end and the optical power distributor
Connection, input terminal are connect with the output end a of the optical power distributor；
The output end b of the optical power distributor is connect with the input terminal of second demodulator；
The make an uproar input terminal of optimizer of the output end of second demodulator and the phase is connect；
The make an uproar output end of optimizer of the phase is connect with the radar secondary station.
Further, second optical circulator is used to obtain the signal F of optical power distributor outputrAnd by the optical cable to
The signal compensation circuit exports the Fn, obtain the FpAnd output signal Fq；
The optical power distributor is for obtaining the Fq, by the FqAfter being divided into two-way, the F is respectively obtainedrWith signal Fs；
Second demodulator is for obtaining the Fs, to the FsIt is demodulated, obtains signal Ft；
The phase makes an uproar optimizer for obtaining the FtAnd noise optimization is carried out, obtain the Fremote。
The another technical solution that the present invention solves above-mentioned technical problem is as follows:
A kind of signal phase synchronous method for radar base station, comprising the following steps:
Step 1, main website input signal F is obtainedin；
Step 2, by the FinIt is divided into four tunnels, using any road as main website output signal Flocal, excess-three road signal
Respectively Fa、FbAnd Fc；
Step 3, secondary station input signal F is obtainedn；
Step 4, according to the Fn, the FaWith the Fb, to the phase between main website output signal and secondary station output signal
Difference is detected and is compensated, and according to the FnWith the Fc, the radar main website and the thunder when being switched on to the radar base station
It is detected and is corrected up to the initial phase relationship between secondary station, obtain signal Fp；
Step 5, it obtains and optimizes the Fp；
Step 6, secondary station output signal F is obtainedremote。
Further, in step 1, the main website input signal F is obtained from radar main websitein。
Further, in step 3, the secondary station input signal FnFor the FinAfter optical cable, pass through the optical cable other end
Optical power distributor return signal.
Further, in step 4, specifically includes the following steps:
Step 4.1, the F is obtaineda, and obtain signal Fd；
Step 4.2, to the FaWith the FdIt measures, obtains phase differencea；
Step 4.3, the F is obtainedb, and obtain signal Fe；
Step 4.4, to the FbWith the FeIt measures, obtains phase differenceb；
Step 4.5, the F is obtainedc, and obtain signal Ff；
Step 4.6, to the FcWith the FfIt measures, obtains phase differencec；
Step 4.7, the φ is obtainedaWith the φb, to the φaWith the φbControl is synchronized, signal F is obtainedg；
Step 4.8, the φ is obtainedcWith the Fg, and to the φcIt is detected, as the φcWhen not being preset value,
Step 4.9 is executed, otherwise, executes step 4.10；
Step 4.9, to the FgPhase reset is carried out, signal F is obtainedh；
Step 4.10, not to the FgIt is handled, obtains signal Fh；
Step 4.11, by the FhIt is divided into two-way, respectively obtains signal FjWith the signal Fd；
Step 4.12, the F is obtainedj, to the FjIt is modulated, obtains signal Fk；
Step 4.13, the F is obtainedkWith the Fn, export the FlWith the Fp；
Step 4.14, the F is obtainedl, and to the FlIt is demodulated, obtains the Fm；
Step 4.15, the F is obtainedm, and by the FmIt is divided into two-way, respectively obtains the FeWith the Ff。
The advantages of additional aspect of the invention, will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or practice is recognized through the invention.
Detailed description of the invention
Fig. 1 is a kind of structural framing of the signal phase synchronizing device for radar base station provided in an embodiment of the present invention
Figure；
Fig. 2 be another embodiment of the present invention provides a kind of signal phase synchronizing device for radar base station structure
Figure；
Fig. 3 be another embodiment of the present invention provides a kind of signal phase synchronous method for radar base station process
Figure.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figure 1, being a kind of knot of the signal phase synchronizing device for radar base station provided in an embodiment of the present invention
Structure frame diagram, the device frame include: that sequentially connected signal compensation circuit 110, optical cable 120 and signal optimize circuit 130,
In,
Signal compensation circuit 110 is connect with radar main website, for obtaining main website input signal Fin, and by FinIt is divided into four tunnels,
Using any road as main website output signal Flocal, excess-three road signal is respectively Fa、FbAnd Fc, and pass through optical cable 120 from letter
Number optimization circuit 130 obtain secondary station input signal Fn, according to Fn、FaAnd Fb, between main website output signal and secondary station output signal
Phase difference detected and compensated, and according to FnAnd Fc, first between radar main website and radar secondary station when being switched on to radar base station
Beginning phase relation is detected and is corrected, and signal F is obtainedp；
Signal optimization circuit 130 is connect with radar secondary station, is used for FnSignal compensation circuit is sent to by optical cable 120
110, it is obtained by optical cable 120 and optimizes Fp, obtain secondary station output signal Fremote。
A kind of signal phase synchronizing device for radar base station provided by the above embodiment, passes through signal compensation circuit
Phase difference between 110 pairs of main website output signals and secondary station output signal compensates, and corrects booting phase relation, then leads to
It crosses optical cable 120 and transmits signal, and circuit 130 is optimized by signal, secondary station output signal is exported, realize main website output
Signal high precision frequency plot between signal and secondary station output signal is synchronous, and can correct main website output signal and pair when being switched on
Phase relation between output signal of standing keeps the frequency plot of the signal between radar primary and secondary stations more stable accurate.
In another embodiment, as shown in Fig. 2, for another embodiment of the present invention provides a kind of letter for radar base station
The structure chart of number phase synchronous device, the device include:
First power splitter 1101, the first phase discriminator 1102, the second phase discriminator 1103, third phase discriminator 1104, the second function point
Device 1105, Phase synchronization controller 1106, phase restorer 1107, third power splitter 1108, modulator 1109, the first demodulator
1110, the first optical circulator 1111, optical cable 120, the second optical circulator 1301, optical power distributor 1302, the second demodulator 1303 with
And optimizer 1304 of mutually making an uproar, wherein
The input terminal of first power splitter 1101 is connect with radar main website, and output end a is for exporting Flocal, output end b and
The input terminal a connection of one phase discriminator 1102, output end c are connect with the input terminal a of the second phase discriminator 1103, output end d and third
The input terminal a connection of phase discriminator 1104；
The input terminal b of first phase discriminator 1102 is connect with the output end a of third power splitter 1108, output end and Phase synchronization
The input terminal a connection of controller 1106；
The input terminal b of second phase discriminator 1103 is connect with the output end a of the second power splitter 1105, output end and Phase synchronization
The input terminal b connection of controller 1106；
The input terminal b of third phase discriminator 1104 is connect with the output end b of the second power splitter 1105, and output end and phase reset
The input terminal a connection of device 1107；
The input terminal of second power splitter 1105 is connect with the output end of the first demodulator 1110；
The output end of Phase synchronization controller 1106 is connect with the input terminal b of phase restorer 1107；
The output end of phase restorer 1107 is connect with the input terminal of third power splitter 1108；
The output end b of third power splitter 1108 is connect with the input terminal of modulator 1109；
The output end of modulator 1109 is connect with the input terminal of the first optical circulator 1111；
The input terminal of first demodulator 1110 is connect with the output end of the first optical circulator 1111；
The bidirectional port of first optical circulator 1111 is connect with optical cable 120；
The bidirectional port of second optical circulator 1301 is connect with optical cable 120, the input terminal of output end and optical power distributor 1302
Connection, input terminal are connect with the output end a of optical power distributor 1302；
The output end b of optical power distributor 1302 is connect with the input terminal of the second demodulator 1303；
The output end of second demodulator 1303 is connect with the input terminal for optimizer 1304 of mutually making an uproar；
The output end of optimizer 1304 of mutually making an uproar is connect with radar secondary station.
Further, the first power splitter 1101 is for obtaining Fin, and by FinIt is divided into four tunnels, using any road as Flocal,
And obtain its excess-three road signal Fa、FbAnd Fc；
First phase discriminator 1102 is for obtaining Fa, and obtain the signal F of the output of third power splitter 1108d, and to FaAnd FdInto
Row measurement, obtains phase differencea；
Second phase discriminator 1103 is for obtaining Fb, and obtain the signal F of the second power splitter 1105 outpute, and to FbAnd FeInto
Row measurement, obtains phase differenceb；
Third phase discriminator 1104 is for obtaining Fc, and obtain the signal F of the second power splitter 1105 outputf, and to FcAnd FfInto
Row measurement, obtains phase differencec；
Second power splitter 1105 is used to obtain the signal F of the first demodulator 1110 outputm, and by FmIt is divided into two-way, respectively
To FeAnd Ff；
Phase synchronization controller 1106 is for obtaining φaAnd φb, to φaAnd φbControl is synchronized, signal F is obtainedg；
Phase restorer 1107 is for obtaining φcAnd Fg, and to φcIt is detected, works as φcWhen not being preset value, to FgInto
Row phase resets, and obtains signal Fh, due to signal FcMain website output signal F can be representedlocalPhase, signal FfIt can represent
Secondary station output signal FremotePhase, therefore according to phase differencecIt may determine that main website output signal FlocalIt exports and believes with secondary station
Number FremoteBetween booting phase relation it is whether abnormal；
Third power splitter 1108 is for obtaining Fh, and by FhIt is divided into two-way, respectively obtains signal FjWith signal Fd；
Modulator 1109 is for obtaining Fj, to FjIt is modulated, obtains signal Fk；
First demodulator 1110 is used to obtain the signal F of the first optical circulator 1111 outputl, and to FlIt is demodulated, is obtained
Fm；
First optical circulator 1111 is for obtaining FkAnd export Fp, obtain FnAnd export Fl；
Second optical circulator 1301 is used to obtain the signal F of the output of optical power distributor 1302rAnd it is mended by optical cable 120 to signal
It repays circuit 110 and exports Fn, obtain FpAnd output signal Fq；
Optical power distributor 1302 is for obtaining Fq, by FqAfter being divided into two-way, F is respectively obtainedrWith signal Fs；
Second demodulator 1303 is for obtaining Fs, to FsIt is demodulated, obtains signal Ft；
Optimizer 1304 of mutually making an uproar is for obtaining FtAnd noise optimization is carried out, obtain Fremote。
In another embodiment, as shown in figure 3, for another embodiment of the present invention provides a kind of letter for radar base station
The flow chart of number phase synchronization method, this method comprises:
S301 obtains main website input signal F from radar main websitein；
S302, by FinIt is divided into four tunnels, using any road as main website output signal Flocal, excess-three road signal difference
For Fa、FbAnd Fc；
S303 obtains secondary station input signal Fn, secondary station input signal FnFor FinIt is another by optical cable 120 after optical cable 120
The signal that the optical power distributor 1302 of one end returns；
S304 obtains Fa, and obtain signal Fd, FdIt is the signal that third power splitter 1108 exports；
S305, to FaAnd FdIt measures, obtains phase differencea；
S306 obtains Fb, and obtain signal Fe, FeIt is the signal of the second power splitter 1105 output；
S307, to FbAnd FeIt measures, obtains phase differenceb；
S308 obtains Fc, and obtain signal Ff, FfIt is the signal of the second power splitter 1105 output；
S309, to FcAnd FfIt measures, obtains phase differencec, due to signal FcMain website output signal F can be representedlocal
Phase, signal FfSecondary station output signal F can be representedremotePhase, therefore according to phase differencecIt may determine that main website exports
Signal FlocalWith secondary station output signal FremoteBetween booting phase relation it is whether abnormal；
S310 obtains φaAnd φb, to φaAnd φbControl is synchronized, signal F is obtainedg；
S311 obtains φcAnd Fg, and to φcIt is detected, works as φcWhen not being preset value, step S312 is executed, otherwise,
Execute step S313；
S312, to FgPhase reset is carried out, signal F is obtainedh；
S313, not to FgIt is handled, obtains signal Fh；
S314, by FhIt is divided into two-way, respectively obtains signal FjWith signal Fd；
S315 obtains Fj, to FjIt is modulated, obtains signal Fk；
S316 obtains FkAnd Fn, export FlAnd Fp；
S317 obtains Fl, and to FlIt is demodulated, obtains Fm；
S318 obtains Fm, and by FmIt is divided into two-way, respectively obtains FeAnd Ff；
S319 is obtained and is optimized Fp, for example, can be to signal FpNoise optimize；
S320 obtains secondary station output signal Fremote。
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit, only
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of signal phase synchronizing device for radar base station characterized by comprising sequentially connected signal compensation electricity
Road (110), optical cable (120) and signal optimization circuit (130), wherein
The signal compensation circuit (110) connect with radar main website, for obtaining main website input signal Fin, and by the FinIt is divided into
Four tunnels, using any road as main website output signal Flocal, excess-three road signal is respectively Fa、FbAnd Fc, and pass through the light
Cable (120) obtains secondary station input signal F from signal optimization circuit (130)n, according to the Fn, the FaWith the Fb, right
Phase difference between main website output signal and secondary station output signal is detected and is compensated, and according to the FnWith the Fc, to institute
Initial phase relationship when stating the booting of radar base station between the radar main website and the radar secondary station is detected and is corrected, and is obtained
To signal Fp；
Signal optimization circuit (130) connect with radar secondary station, is used for the FnInstitute is sent to by the optical cable (120)
Signal compensation circuit (110) are stated, obtained by the optical cable (120) and optimize the Fp, obtain secondary station output signal Fremote；
Wherein, the signal compensation circuit (110) includes: the first power splitter (1101), the first phase discriminator (1102), the second phase demodulation
Device (1103), third phase discriminator (1104), the second power splitter (1105), Phase synchronization controller (1106), phase restorer
(1107), third power splitter (1108), modulator (1109), the first demodulator (1110) and the first optical circulator (1111),
Wherein,
The input terminal of first power splitter (1101) is connect with the radar main website, and output end a is for exporting the Flocal, defeated
Outlet b is connect with the input terminal a of first phase discriminator (1102), the input of output end c and second phase discriminator (1103)
A connection is held, output end d is connect with the input terminal a of the third phase discriminator (1104), and first power splitter (1101) is for obtaining
Take the Fin, and by the FinIt is divided into four tunnels, using any road as the Flocal, and obtain its excess-three road signal Fa、Fb
And Fc；
The input terminal b of first phase discriminator (1102) is connect with the output end a of the third power splitter (1108), output end with
The input terminal a connection of the Phase synchronization controller (1106), first phase discriminator (1102) is for obtaining the Fa, and obtain
Take the signal F of third power splitter (1108) outputd, and to the FaWith the FdIt measures, obtains phase differencea；
The input terminal b of second phase discriminator (1103) is connect with the output end a of second power splitter (1105), output end with
The input terminal b connection of the Phase synchronization controller (1106), second phase discriminator (1103) is for obtaining the Fb, and obtain
Take the signal F of the second power splitter (1105) outpute, and to the FbWith the FeIt measures, obtains phase differenceb；
The input terminal b of the third phase discriminator (1104) is connect with the output end b of second power splitter (1105), output end with
The input terminal a connection of the phase restorer (1107), the third phase discriminator (1104) is for obtaining the Fc, and obtain institute
State the signal F of the second power splitter (1105) outputf, and to the FcWith the FfIt measures, obtains phase differencec；
The input terminal of second power splitter (1105) is connect with the output end of first demodulator (1110), second function
The signal F for dividing device (1105) to be used to obtain the first demodulator (1110) outputm, and by the FmIt is divided into two-way, respectively obtains
The FeWith the Ff；
The output end of the Phase synchronization controller (1106) is connect with the input terminal b of the phase restorer (1107), described
Phase synchronization controller (1106) is for obtaining the φaWith the φb, to the φaWith the φbControl is synchronized, is obtained
To signal Fg；
The output end of the phase restorer (1107) is connect with the input terminal of the third power splitter (1108), and the phase is multiple
Position device (1107) is for obtaining the φcWith the Fg, and to the φcIt is detected, as the φcIt is right when not being preset value
The FgPhase reset is carried out, signal F is obtainedh；
The output end b of the third power splitter (1108) is connect with the input terminal of modulator (1109), the third power splitter
(1108) for obtaining the Fh, and by the FhIt is divided into two-way, respectively obtains signal FjWith the signal Fd；
The output end of the modulator (1109) is connect with the input terminal of first optical circulator (1111), the modulator
(1109) for obtaining the Fj, to the FjIt is modulated, obtains signal Fk；
The input terminal of first demodulator (1110) is connect with the output end of first optical circulator (1111), and described first
Demodulator (1110) is used to obtain the signal F of the first optical circulator (1111) outputl, and to the FlIt is demodulated, is obtained
The Fm；
The bidirectional port of first optical circulator (1111) is connect with the optical cable 120, first optical circulator (1111)
For obtaining the FkAnd export the Fp, obtain the FnAnd export the Fl。
2. signal phase synchronizing device according to claim 1, which is characterized in that signal optimization circuit (130) packet
It includes: the second optical circulator (1301), optical power distributor (1302), the second demodulator (1303) and optimizer of mutually making an uproar (1304), wherein
The bidirectional port of second optical circulator (1301) is connect with the optical cable 120, output end and the optical power distributor
(1302) input terminal connection, input terminal are connect with the output end a of the optical power distributor (1302)；
The output end b of the optical power distributor (1302) is connect with the input terminal of second demodulator (1303)；
The make an uproar input terminal of optimizer (1304) of the output end of second demodulator (1303) and the phase is connect；
The make an uproar output end of optimizer (1304) of the phase is connect with the radar secondary station.
3. signal phase synchronizing device according to claim 2, which is characterized in that second optical circulator (1301) is used
In the signal F for obtaining optical power distributor (1302) outputrAnd institute is exported to the signal compensation circuit 110 by the optical cable 120
State Fn, obtain the FpAnd output signal Fq；
The optical power distributor (1302) is for obtaining the Fq, by the FqAfter being divided into two-way, the F is respectively obtainedrWith signal Fs；
Second demodulator (1303) is for obtaining the Fs, to the FsIt is demodulated, obtains signal Ft；
The phase makes an uproar optimizer (1304) for obtaining the FtAnd noise optimization is carried out, obtain the Fremote。
4. a kind of signal phase synchronous method for radar base station, which comprises the following steps:
Step 1, main website input signal F is obtainedin；
Step 2, by the FinIt is divided into four tunnels, using any road as main website output signal Flocal, excess-three road signal difference
For Fa、FbAnd Fc；
Step 3, secondary station input signal F is obtainedn；
Step 4, according to the Fn, the FaWith the Fb, to the phase difference between main website output signal and secondary station output signal into
Row is detected and is compensated, and according to the FnWith the Fc, the radar main website and the radar pair when being switched on to the radar base station
Initial phase relationship between standing is detected and is corrected, and signal F is obtainedp；
Step 5, it obtains and optimizes the Fp；
Step 6, secondary station output signal F is obtainedremote；
Wherein, in step 4, specifically includes the following steps:
Step 4.1, the F is obtaineda, and obtain signal Fd；
Step 4.2, to the FaWith the FdIt measures, obtains phase differencea；
Step 4.3, the F is obtainedb, and obtain signal Fe；
Step 4.4, to the FbWith the FeIt measures, obtains phase differenceb；
Step 4.5, the F is obtainedc, and obtain signal Ff；
Step 4.6, to the FcWith the FfIt measures, obtains phase differencec；
Step 4.7, the φ is obtainedaWith the φb, to the φaWith the φbControl is synchronized, signal F is obtainedg；
Step 4.8, the φ is obtainedcWith the Fg, and to the φcIt is detected, as the φcWhen not being preset value, execute
Step 4.9, otherwise, step 4.10 is executed；
Step 4.9, to the FgPhase reset is carried out, signal F is obtainedh；
Step 4.10, not to the FgIt is handled, obtains signal Fh；
Step 4.11, by the FhIt is divided into two-way, respectively obtains signal FjWith the signal Fd；
Step 4.12, the F is obtainedj, to the FjIt is modulated, obtains signal Fk；
Step 4.13, the F is obtainedkWith the Fn, the F is sequentially output by optical circulatorpAnd Fl；
Step 4.14, the F is obtainedl, and to the FlIt is demodulated, obtains Fm；
Step 4.15, the F is obtainedm, and by the FmIt is divided into two-way, respectively obtains the FeWith the Ff。
5. signal phase synchronous method according to claim 4, which is characterized in that in step 1, obtain institute from radar main website
State main website input signal Fin。
6. signal phase synchronous method according to claim 5, which is characterized in that in step 3, the secondary station input signal
FnFor the FinAfter optical cable (120), pass through the signal of optical power distributor (1302) return of optical cable (120) other end.
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