CN102736068B - Tracking processing method for self-adaptive identification of multi-station asynchronous signal interference - Google Patents
Tracking processing method for self-adaptive identification of multi-station asynchronous signal interference Download PDFInfo
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Abstract
The invention provides a tracking processing method for the self-adaptive identification of multi-station asynchronous signal interference, aims at providing a method for the self-adaptive identification of multi-station tracking asynchronous signal interference, and the method is high in phase shift identification probability, low in cost and quick in response and is resistant to the asynchronous signal interference. The tracking processing method is realized through the following technical scheme that the tracking processing method comprises the following steps of: first, establishing a self-adaptive identification control system; in an asynchronous signal interference processing circuit consisting of a DSP (digital signal processor) and an FPGA (field programmable gate array), programming to use a home station tracking gate as a center and arranging a front guard door, an open window type back guard door and an inspection-free window; carrying out analysis processing on an effective echo signal by adopting a correlation algorithm by the FPGA, meanwhile, carrying out comprehensive judgment on a phase shift condition by utilizing an N/M criterion and a kinetic characteristic between the echo signals, predicting a relative motion condition between the signals by adopting a function estimation algorithm, judging whether the phase shift is needed or not and a home station signal falls into the echo of another interference signal or not after the phase shift according to a phase shift criterion, and carrying out self-adaptive processing on a distance for the phase shift.
Description
Technical field
The present invention relates to pulsed radar multistation and follow the tracks of self-adaptation identification and the control method that asynchronous signal disturbs.
Background technology
Following the tracks of asynchronous signal at the multistation of prior art disturbs in control system, on vehicle, be loaded with answering machine, the co-ordination of multi-section instrumentation radar, follow the tracks of the same target that is equipped with answering machine, each radar is launched respectively interrogating signal, answering machine is replied the interrogating signal receiving, and radar is followed the tracks of answer signal, realizes the tracking to vehicle.In real work, there are multiple up transmitting simultaneously, when multiple signals lean on too closely, easily cause our station signal to be interfered, and our station tracking target is lost.
In the measurement and control area of target range, common radar chain is realized the relay of target is measured, and several instrumentation radar whiles are launched interrogating signal to the answering machine in target.When target range vehicle is launched, answering machine is different from the distance of ground multi-section instrumentation radar, and when these instrumentation radar collaborative works are followed the tracks of vehicle simultaneously, answering machine has certain response time, can not respond the signal that multi-section radar is sent simultaneously.While work due to radar, can receive the answer signal of our station and the reflected signal of vehicle simultaneously, also can receive answer signal and the reflected signal of its station radar of collaborative work simultaneously, therefore there will be the formula of replying asynchronous interference as shown in Figure 5., easily there is echo signal loss in the signal detecting for our station, reduces the tracking performance of radar, even causes following the tracks of unsuccessfully.In the time that passing through our station radar tracking ripple door, the asynchronous answer signal at its station easily causes our station dropout, if the echoed signal of reflection approaches the tracking range door of same radar range finder, also will cause phase mutual interference, hinder the tracking to former tracking target, even cause the loss of original tracking target; On the other hand, because answering machine has certain response time, can not respond the interrogating signal that multistation radar is sent simultaneously, if two interrogating signals are less than the release time of answering machine at a distance of the time, answering machine can not provide answer signal to a rear interrogating signal, there is answering machine signal jam, cause the tax evasion of signal, lose tracking target.
Reply the mutual interference problem of formula radar all exists all the time, and also very large on the impact of system performance, the phase shift technology of existing radar adopts fashionable door and the artificial cognition of fixed width to add manual phase shift mostly, in distance range certain before tracking gate, detect and whether have undesired signal, this detects distance segment and is called fashionable door, in the time undesired signal being detected, radar transmitter shifts to an earlier date regular hour transponder pulse repetition frequency (PRF) and transponder pulse, make our station signal propose previous fixing range transmission pulse, in the next repetition frequency cycle, the our station echoed signal time is also shifted to an earlier date accordingly, undesired signal dropped on our station signal after, can avoid approaching of two signals, thereby avoid the tax evasion phenomenon of answering machine to occur and the impact of undesired signal on our station radar tracking, but this phase shift system to signal to each other the relative motion situation on time shaft there is no discriminatory analysis, reduce the normal probability of success of following the tracks of after phase shift, also increased the blindly number of times of phase shift, even between multi-section radar, can produce phase shift competition, in the situation of phase shift increased frequency, the probability of radar tracking failure can increase, be in particular in lower several aspect:
1. when phase shift condition meets, phase shift distance in front just in time has undesired signal, and after phase shift, our station signal falls near undesired signal again, causes dropout or phase shift again;
2. undesired signal is approached from front and back simultaneously, undesired signal threatens to our station radar signal, our station signal has also formed threat to its station radar signal, and phase shift measure all may be taked in our station and its station, may produce phase shift competition and repeated multiple times phase shift;
3. asynchronous Radar jam signal falls into our station radar appearance region because of the reason such as phase shift manually or automatically, due to the restriction of transponder recovery time, our station radar signal can be suppressed by asynchronous interference signal, cause our station radar cannot judge asynchronous signal and can not automatic shifting phase, our station radar be by lose objects;
4. asynchronous Radar jam signal falls into the region between our station radar appearance and answer signal because of the reason such as phase shift manually or automatically, cause our station radar and asynchronous radar automatic shifting phase simultaneously, if the distance of a phase shift of two radars is identical, to cause our station radar signal to be pressed, our station radar is by lose objects;
5. the difference problem of artificial cognition because existing reaction time and people to be identification, can not solve the problem that asynchronous signal disturbs well.
For the existing equipment of use of trying one's best, existing equipment is not done to large improvement, the present invention can correctly identify and follow the tracks of the answer signal of answering machine to our station radar by providing a kind of, avoids interference the impact of signal on our station signal.
Summary of the invention
The object of the invention is the weak point existing for prior art, provide a kind of phase shift identification probability high, cost is low, response is fast, anti-asynchronous signal disturbs, and can correctly identify and follow the tracks of the answer signal of answering machine to our station radar, and can avoid interference signal to our station effect of signals and signal tax evasion, make our station signal be difficult for losing, self-adaptation identification multistation is followed the tracks of method and the control technology that asynchronous signal disturbs.
Above-mentioned purpose of the present invention reaches by following measures.Set up an analog answer formula asynchronous signal interference adaptive control system for identifying that disturbs treatment circuit and supervisory control comuter to form by asynchronous signal, the asynchronous signal forming at the field programmable gate array (FPGA) that is connected by digital signal processor (DSP) disturbs in treatment circuit, utilize hardware logic programming language in FPGA, to work out centered by our station tracking gate, setting can make undesired signal enter to trigger our station radar to shift to an earlier date exomonental fashionable door and fenestration rear guard door, and corresponding to our station radar appearance, avoid self reflected signal to enter fashionable door and cause from the inspection-free window that triggers phase shift transmitting, FPGA utilizes the fashionable door and the fenestration rear guard door that arrange to carry out whole process detection to radar echo signal, adopt related algorithm to carry out analyzing and processing to effective echoed signal, relative motion characteristic between analytic signal, utilize the kinetic characteristic between N/M criterion and echoed signal comprehensively to pass judgment on phase shift condition simultaneously, adopt Function Estimation algorithm predicts signal relative motion situation to each other, and to front, the signal of rear guard Men Nei makes a decision processing, after judging whether to need phase shift and phase shift according to phase shift criterion, whether our station signal falls in the echo of another undesired signal, the distance of self-adaptive processing phase shift, wherein, N is the effective minimum number of decision signal, M is the number of times of detection signal.
Described N/M criterion is for M detection signal, is 1 when single detection signal is effective, otherwise is 0.In the time that the number of " 1 " in M detection signal is more than or equal to N, the signal that detected is effective.
The present invention has following beneficial effect than prior art.
The present invention utilizes fashionable door and the fenestration rear guard door of setting to detect radar echo signal whole process, adopt related algorithm to carry out analyzing and processing to effective echoed signal, relative motion characteristic between analytic signal, utilize the kinetic characteristic between N/M rule and echoed signal comprehensively to pass judgment on phase shift condition, by rear guard's door of fashionable door and fenestration, the data that analysis receives also adopt Function Estimation algorithm predicts signal relative motion situation to each other, and to front, the signal of rear guard Men Nei makes a decision processing, judge whether to need phase shift according to phase shift criterion, phase shift is made a policy opportunity.The in the situation that of needs phase shift, after judging phase shift, can or can not make our station signal fall in the echo of another undesired signal, according to characteristics of signals, the distance of phase shift is carried out to self-adaptive processing, make optimum phase shift decision-making, promote phase shift tracking performance, solved well the radar website phenomenon such as our station dropout after phase shift or phase shift repeatedly.
The present invention adopts the fashionable door of self-adaptation identification phase shift and rear guard's door self-adaptation control system for identifying of fenestration, existing equipment is not done to large improvement, can correctly identify and follow the tracks of the answer signal of answering machine to our station radar, anti-asynchronous signal disturbs, and can avoid interference impact and the signal tax evasion of signal on our station signal, the tracking stability of radar be can not only effectively improve, phase shift repeatedly and phase shift failure avoided.And self-adaptation phase shift is high apart from identification probability, cost is low, and response is fast.Rear guard's door of fenestration has reduced phase shift competition and phase shift failure; Omnidistance detection signal and analysis can be passed judgment on phase shift condition, reduce phase shift number of times etc., improve the ability of missile-range instrumentation radar anti-asynchronous interference under complex electromagnetic environment, thereby completeness and the stability of target range radar measured data are promoted, for ground safety remote control, supervision, measurement data analysis, qualification vehicle system accuracy provide important evidence, range equipment is had to very important realistic meaning.
Because the relative position relation of asynchronous interference signal and our station tracking signal is depended in the phase shift of self-adaptation phase shift apart from size, the present invention is directed to pulsed radar multistation asynchronous signal and disturb the various phenomenons that are unfavorable for that identification is controlled that produce.By N/M judgment criterion, can automatically select mode of operation, and there is the predictability of science, issuable negative consequence is judged.Can be in radar A/R demonstration, see intuitively the position distribution of its position distribution situation and each signal of phase shift front and back.
Brief description of the drawings
Below, the present invention is further described with embodiment by reference to the accompanying drawings.
Fig. 1 is maneuvering target tracking basic principle schematic.
Fig. 2 is the schematic block circuit diagram of analog answer formula asynchronous interference self-adaptation control system for identifying of the present invention.
Fig. 3 is fashionable door and the rear guard's door composition schematic diagram centered by tracking gate.
Fig. 4 is the phase shift front and back PRF relative position schematic diagram of self-adaptation control system for identifying simulation.
Fig. 5 is that prior art is replied formula asynchronous interference schematic diagram.
Embodiment
Radar system is a recursive process to the tracking processing of echo signal and asynchronous signal as shown in Figure 1: first create fresh target archives by trace logic, then realize the coupling of measurement and target by tracking gate and data correlation rule, utilize afterwards the tracking such as motor-driven identification and auto adapted filtering, prediction to maintain the state of method estimating target, thereby upgrade the target data of having set up.Follow the tracks of the measurement set that in space, those can not be associated with any known target and be used for setting up fresh target archives, in the time that target is left tracking space, eliminate unnecessary target folder by following the tracks of terminating method.Finally can be determined tracking gate center and the size in next moment by target prediction state, before new observation arrives, restart the recursion circulation in next moment.
As shown in Figure 2, the self-adaptation control system for identifying that one of model comprises supervisory control comuter and asynchronous signal interference treatment circuit, the supervisory system of guinea pig, signal processing system, frequency are combined and emission coefficient.Self-adaptation control system for identifying output signal can be monitored by oscillograph.This self-adaptation control system for identifying comprises, the supervisory control comuter that contains monitoring software with contain the be connected asynchronous signal of FPGA of DSP and disturb treatment circuit.This asynchronous signal disturbs treatment circuit, comprise, with the DSP of emulation interface with the FPGA of jtag interface, AS interface, between DSP and FPGA, adopt the multiple interfaces modes such as bus, address decoding, interruption pulse signal, realize the data input and output of DSP and FPGA, DSP is by data bus, the address bus FPGA composition asynchronous signal interference treatment circuit that is connected with I/O gating.Power circuit output+3.3V and+1.9V is DSP power supply, output+3.3V and+1.2V is that FPGA powers.Serial input between DSP and supervisory control comuter and output adopt RS232 conversion chip, Transistor-Transistor Logic level are converted to the signal input and output of RS232 standard; The FPGA oscillograph that is connected, phase-shift pulse and vision signal input oscillograph; DSP is by data bus, address bus, the connected program storage of program gate bus, and this program storage extending out is random access memory, loses storage content, for the emulation of dsp software when power-off.Disturb in treatment circuit at asynchronous signal, utilize hardware logic programming language in FPGA, to work out centered by our station tracking gate, setting can make undesired signal enter to trigger our station radar to shift to an earlier date exomonental fashionable door and fenestration rear guard door, and corresponding to our station radar appearance, avoid self reflected signal to enter fashionable door and cause from the inspection-free window that triggers phase shift transmitting, and to detecting within the scope of radar echo signal gamut; 2 discontinuous pulse compositions of fashionable Men Shiyou, can be seen as and open a width in the middle of a width is the pulse of 25.9 μ s is 1.6 μ s, a breach that apart from tracking gate center is 6.4 μ s forms, and the inspection-free window of the width 1.6 μ s of fashionable Men Nei is corresponding to our station reflected signal; Rear guard's door is the detection window of the 24.2 1 μ s in μ s place after tracking gate, detects undesired signal at this detection window, if meet phase shift condition, does phase shift processing, triggers Ben Leida and launches in advance phase-shift pulse.When FPGA detects after fashionable door and rear guard's door asynchronous interference signal, adopt N/M criterion to detect, produce phase-shift pulse, automatically by vision signal phase shift fixed range, simulation is combined and transmitter phase shift frequently, and on the pin of FPGA, exports phase-shift pulse signal; Tracking range, target range, interference distance and phase shift state are sent to the enterprising row data of supervisory control comuter to DSP and simulation A/R shows, and on supervisory control comuter, represent the generation of phase shift state with the pilot lamp of flicker.Described N/M criterion is for M detection signal, is 1 when single detection signal is effective, otherwise is 0.In the time that the number of " 1 " in M detection signal is more than or equal to N, the signal that detected is effective.
A is A indicator.A indicator is that straight line scans, and the starting point of scanning line is synchronizeed with transponder pulse, scans line length corresponding with distance by radar range, the oblique distance of scanning line length and represent target between main ripple and echo, and R is R escope.R escope is that A indicator scans expansion a bit of in line, is used for observing in detail target and near the situation thereof of being selected.Both are used in conjunction with A indicator, R escope, can observe whole information and can find range more accurately to selected target again, are referred to as A/R display.
When the identification of analog answer formula asynchronous interference, in the monitoring software interface of supervisory control comuter, send the undesired signal of the our station target of simulation and the speed of jamming target and acceleration, different directions.Operate in the monitoring software on supervisory control comuter, send to asynchronous signal to disturb the DSP for the treatment of circuit the control parameter in many different air routes from keyboard input by the RS232 serial ports of computing machine, DSP is according to controlling parameter, simulation friction speed, our station radar echo signal and multiple undesired signal of different directions motion, according to the movable information of target, target is automatically identified and followed the tracks of, and ceaselessly the count value of the target of renewal and each interference distance is write to FPGA, FPGA is according to the vision signal of count value analogue echo and interference, phase shift condition is judged to processing, provide phase shift status signal, our station signal and undesired signal are combined to formation vision signal, DSP processes this vision signal, follow the tracks of our station echoed signal, simultaneously also by tracking range, target range, interference distance sends to the enterprising row data of supervisory control comuter and simulation A/R shows, phase shift state also sends on supervisory control comuter and shows, on supervisory control comuter, show phase shift state with flashing mode, the vision signal of echo signal and undesired signal is sent oscilloscope display by FPGA, and send oscilloscope display by phase-shift pulse signal.When undesired signal is near echo signal, when phase shift condition meets, oscillograph there will be the pulse signal of a saltus step to represent automatic shifting phase once, reflection tracking target.
The manual method of the general employing of initial identification of radar target signal, move the range gate on A/R display by shake range hadn wheel on radar operation bench, in the time that echo signal enters range gate, switching state, to from motion tracking, is enclosed within echo signal apart from tracking gate.
Asynchronous signal disturbs treatment circuit to process video echo, tracking target, whether there is asynchronous interference signal fashionable door Rigen according to amplitude and the width detection of echoed signal simultaneously, after adopting N/M criterion asynchronous interference signal to be detected, send phase-shift pulse to the frequently comprehensive system of radar, radar is frequently combined and emission coefficient detects automatic shifting phase after phase-shift pulse, and by reducing the Counter Value of frequency division counter, the time corresponding with Counter Value transmits in advance.When emulation, whether asynchronous signal disturbs target that treatment circuit FPGA software sends here by DSP and interference distance information to judge undesired signal in sensing range, detect after asynchronous interference signal, first get N=0 according to formula (1), calculate phase shift distance, then detect whether there is undesired signal according to the distance after phase shift more this moment, calculate phase shift distance if still there is asynchronous interference signal to get again N=N+1, detect undesired signal, the like, make in sensing range, there is no undesired signal until get suitable N value, produce phase-shift pulse, vision signal is moved corresponding phase shift distance by FPGA, simulate the phase shift of transmitter.
Asynchronous signal disturbs the FPGA signal processing software on treatment circuit can be divided into three main modules, respectively clock division phase shift block, signal imitation module and tracking processing module, wherein, clock division phase shift block be input as crystal oscillator clock CLK and phase-shift pulse, when initial reset, radar repetition frequency signal (Prf_A) after frequency division output radar repetition frequency signal (Prf) and phase shift, Prf and Prf_A are identical fractional frequency signal.As shown in Figure 4 in the PRF relative position of phase shift front and back, in the time that phase-shift pulse arrives, Prf is constant, keep original beat to continue output, Prf_A exports pulse in advance, thereafter cycle still remains unchanged, and phase shift distance is made differentiation according to the characteristic of signal in range ability, guarantee phase shift after our station signal can not fall in another undesired signal.
Signal imitation module by target and disturbing pulse signal phase or, in the time having target generation interpolar to separate, also want mutually or remains signal, then by the pin outputting video signal of FPGA.
Vision signal enters tracking processing module, follows the tracks of processing module and reads current duty and parameter by the data bus of FPGA.When in manual tracking, the directly position using manual distance as tracking gate when state is when being manually switched to from motion tracking, is searched for target in certain limit, and is produced tracking gate near current distance.When the target travel of simulation, tracking gate is followed the motion of target, and distance is from motion tracking, and meanwhile, FPGA arranges fashionable door in the forward position of tracking gate, and the width of fashionable door is chosen 26.666us left and right, searches whether there is other pulse signal at fashionable Men Li.When continuous several PRF search after pulse signal, FPGA confirms there is asynchronous interference signal, FPGA sends automatic shifting phase pulse to clock division phase shift block, Prf_A signal is wherein shifted to an earlier date certain width by phase shift block, be that PRF_A compares Prf regular hour output pulse in advance, the time shifting to an earlier date is by judging whether respective distances place, front exists other undesired signals to process.
FPGA sends the PRF pulse signal of generation, vision signal and tracking gate signal, can monitor with oscillograph.
Target and interference distance that asynchronous signal disturbs the DSP in treatment circuit that monitoring software is sent are processed into count value, after phase shift, again the count value after phase shift is converted to target range, interference distance, tracking range, send to the monitoring software of supervisory control comuter, the distance value simulation A/R that monitoring software utilization receives shows, the motion of observed echo signal intuitively and tracking situation.
The size of phase shift distance, is formulated as:
S
1＝S
0+N*S
δ ……(1)
Wherein: S
1for distance size that will phase shift, S
0for benchmark phase shift distance, there is relation the response time of the size of this distance and target response machine, S
0for 8km, N is the number of variable phase shift distance, S
δfor variable phase shift distance, the size of this distance depends on the response time of target response machine, S
δfor 4km, the corresponding answering machine response time is 26.66us.
As shown in Figure 3, self-adaptation control system for identifying, centered by tracking gate, arranges rear guard's door of fashionable door and fenestration for fashionable door and the setting of rear guard's door.2 discontinuous pulse compositions of fashionable Men Shiyou, can be seen as and open a width in the middle of a width is the pulse of 25.9 μ s is 1.6 μ s, a breach that apart from tracking gate center is 6.4 μ s forms, and the inspection-free window of the width 1.6 μ s of fashionable Men Nei is corresponding to our station reflected signal.The setting of fashionable door will make exactly when there being undesired signal to enter fashionable Men Shi, can trigger Ben Leida and launch in advance phase-shift pulse, self be to distinguish its station signal and our station reflected signal but defend door, therefore when radar receives the reflected signal of self and when answer signal simultaneously, just must manage to ensure to avoid self reflected signal to enter fashionable door causes from triggering phase shift transmitting, so an inspection-free window is set, makes the signal in inspection-free window not do phase shift processing.
In Fig. 3, rear guard's door is the detection window of the 24.2 1 μ s in μ s place after tracking gate, detects undesired signal at this detection window, if the undesired signal of detecting is calculated phase shift distance according to formula (1), do phase shift processing, trigger Ben Leida and launch in advance phase-shift pulse.Because undesired signal is approached radar from rear, after phase shift, undesired signal has been greater than phase shift distance from tracking gate, temporarily can not affect tracking signal, but along with the relative motion of target and undesired signal, if undesired signal is still in the detectable scope of our station radar, when undesired signal enters windowing when surveyed area of rear guard's door again, can cause continuation phase shift next time, until this blackout.
Claims (9)
1. the tracking processing method that self-adaptation identification multistation asynchronous signal disturbs, is characterized in that comprising the steps: to set up an analog answer formula asynchronous signal interference adaptive control system for identifying that disturbs treatment circuit and supervisory control comuter to form by asynchronous signal, the asynchronous signal forming at the field programmable gate array FPGA that is connected by digital signal processor DSP disturbs in treatment circuit, utilize hardware logic programming language in FPGA, to work out centered by our station tracking gate, setting can make undesired signal enter to trigger our station radar to shift to an earlier date exomonental fashionable door and fenestration rear guard door, and corresponding to our station radar appearance, avoiding self reflected signal to enter fashionable door causes from the inspection-free window that triggers phase shift transmitting, 2 discontinuous pulse compositions of fashionable Men Shiyou, that in the middle of a width is the pulse of 25.9 μ s, to have opened a width be 1.6 μ s, a breach that apart from tracking gate center is 6.4 μ s forms, the breach of the width 1.6 μ s of fashionable Men Nei is inspection-free window, rear guard's door is the detection window of the 24.2 1 μ s in μ s place after tracking gate, FPGA utilizes the fashionable door and the fenestration rear guard door that arrange to carry out whole process detection to radar echo signal, adopt related algorithm to carry out analyzing and processing to effective echoed signal, relative motion characteristic between analytic signal, utilize the kinetic characteristic between N/M criterion and echoed signal comprehensively to pass judgment on phase shift condition simultaneously, adopt Function Estimation algorithm predicts signal relative motion situation to each other, and to front, the signal of rear guard Men Nei makes a decision processing, after judging whether to need phase shift and phase shift according to phase shift criterion, whether our station signal falls in the echo of another undesired signal, the distance of self-adaptive processing phase shift, wherein, N is the effective minimum number of decision signal, M is the number of times of detection signal.
2. the tracking processing method that self-adaptation identification multistation asynchronous signal according to claim 1 disturbs, is characterized in that; Described N/M criterion is for M detection signal, is 1 when single detection signal is effective, otherwise is 0; In the time that the number of " 1 " in M detection signal is more than or equal to N, the signal that detected is effective.
3. the tracking processing method that self-adaptation identification multistation asynchronous signal according to claim 1 disturbs, it is characterized in that: described self-adaptation control system for identifying, comprise, the supervisory control comuter that contains monitoring software with contain DSP be connected FPGA asynchronous signal disturb treatment circuit.
4. the tracking processing method that self-adaptation identification multistation asynchronous signal according to claim 1 disturbs, it is characterized in that: described asynchronous signal disturbs treatment circuit, comprise, with the DSP of emulation interface with the FPGA of jtag interface, AS interface, between DSP and FPGA, adopt bus, address decoding, interruption pulse signal multiple interfaces mode, DSP is by data bus, the address bus FPGA composition asynchronous signal interference treatment circuit that is connected with I/O gating.
5. the tracking processing method that self-adaptation identification multistation asynchronous signal according to claim 1 disturbs, it is characterized in that: described 2 discontinuous pulse compositions of fashionable Men Shiyou, it is 1.6 μ s that a width has been opened in the pulse centre that these two discontinuous pulses are is 25.9 μ s at a width, is that a breach of 6.4 μ s forms apart from tracking gate center.
6. the tracking processing method that self-adaptation identification multistation asynchronous signal according to claim 1 disturbs, it is characterized in that: the inspection-free window of the width 1.6 μ s of fashionable Men Nei is corresponding to our station reflected signal, rear guard's door is the detection window of the 24.2 1 μ s in μ s place after tracking gate, detect undesired signal at this detection window, if meet phase shift condition, do phase shift processing, trigger Ben Leida and launch in advance phase-shift pulse.
7. the tracking processing method that a self-adaptation identification multistation asynchronous signal according to claim 1 disturbs, it is characterized in that: target and interference distance that asynchronous signal disturbs the DSP in treatment circuit that monitoring software is sent are processed into count value, after phase shift, again the count value after phase shift is converted to target range, interference distance, tracking range, sends to the monitoring software of supervisory control comuter.
8. the tracking processing method that a self-adaptation identification multistation asynchronous signal according to claim 1 disturbs, is characterized in that: the size of phase shift distance, is formulated as:
S
1＝S
0+N*S
δ ……(1)
Wherein: S
1for distance size that will phase shift, S
0for benchmark phase shift distance, N is the number of variable phase shift distance, S
δfor variable phase shift distance.
9. the tracking processing method that a self-adaptation identification multistation asynchronous signal according to claim 1 disturbs, it is characterized in that: rear guard's door is the detection window of the 24.2 1 μ s in μ s place after tracking gate, detect undesired signal at this detection window, if the undesired signal of detecting, the formula (1) according to Claim 8 calculates phase shift distance, do phase shift processing, trigger Ben Leida and launch in advance phase-shift pulse.
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| "基于多站互扰的目标识别方法研究";徐光明 等;《无线电工程》;20091130;第39卷(第11期);第37-40页 * |
| "雷达链信号干扰分析及对策";胡红军;《现代雷达》;20080229;第30卷(第2期);第56-60页 * |
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