CN102955151A - Adaptive cross-polarization active jamming method and device - Google Patents
Adaptive cross-polarization active jamming method and device Download PDFInfo
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Abstract
The invention relates to the technical field of radar jamming, and discloses an adaptive cross-polarization active jamming method and device. The device comprises a receiving antenna, a transmitting antenna, a receiving module and a jamming control module, wherein the receiving antenna which is used for receiving horizontal or vertical polarized signals is connected with the jamming control module through the receiving module; the output end of the jamming control module is connected with the transmitting antenna which is used for transmitting horizontal or vertical polarized signals; and a receiving-transmitting isolation device is arranged between the receiving antenna and the transmitting antenna. According to the jamming device, the jamming effect generated when a plurality of jammers work at the same time can be achieved by one jammer without measuring pulse description words (PDW) of a radar signal or the polarized state of the radar signal and without adopting a plurality of jammers to run at the same time, and cross-polarization jamming can be generated adaptively, so that a stable and effective jamming effect can be achieved, the angle measurement accuracy of a monopulse radar can be greatly reduced, and the cost for development and maintenance can be greatly reduced.
Description
Technical field
The present invention relates to the perturbation technique field of radar, relate in particular to a kind of self-adaptation cross polarization Active Jamming Method and device for monopulse tracking radar.
Background technology
Existing conflicting mode for monopulse tracking radar mainly is divided into active interference and passive interference at present.Passive interference for monopulse radar mainly is to form in the short period of time stronger radar return by Chaff Clouds or passive scatterer, so that the barycenter of radar tracking Chaff Clouds and true radar target energy, produce angle error in tracking, but the scope of application of this conflicting mode is very limited, the effective interference time that forms is very of short duration, stablizes effective the interference for very difficult formation of the large-scale tracking radar of continental rise.For the active interference of monopulse radar mainly by two or more a plurality of interference sources are set in the resolution angle of monopulse radar, cycle or aperiodic break-make interference source, so that the antenna direction of monopulse tracking radar chases after pendulum back and forth between interference source, cause tracking error.Need a plurality of jammers to carry out cooperating but implement this interference, the equipment amount that needs is larger, the practical operation difficulty, and the cost of realization is very high, is difficult to effectively implement.
Summary of the invention
Deficiency for existing monopulse radar perturbation technique, the invention provides a kind of self-adaptation cross polarization Active Jamming Method and device, no matter how the monopulse radar platform moves, how monopulse radar emission polarization changes, this jammer can be according to the radar transmitted pulse signal that receives, adaptive generation is the undesired signal of polarization orthogonal with it, by power amplification and be transmitted to radar, make monopulse radar form wrong measurement of angle information, can effectively cover zone, real goal position.The present invention compares with other jamming signal type, because this self-adaptation cross polarization active chaff utilization is the intrinsic attribute of radar antenna itself, and interference polarization can strictly keep and the radar emission polarization orthogonal adaptively, thereby jamming effectiveness is very high; This jammer device structure is relatively simple, and the horizontal comparative maturity of the device of employing does not need a plurality of interference platforms, and cost is lower, is easy to realize.
For realizing aforesaid goal of the invention, technical scheme of the present invention is:
The active countermeasure set of a kind of self-adaptation cross polarization, comprise: receiving antenna, emitting antenna, receiver module, interference control module, described receiving antenna is for receiving the receiving antenna of horizontal polarization signal/reception vertical polarization signal in orthogonal polarization, and described emitting antenna is the receiving antenna of emission level polarized signal/emission vertical polarization signal; The receiving antenna of described reception horizontal polarization signal is connected with the third channel that disturbs control module by the first passage of receiver module, disturbs the third channel output terminal of control module to be connected with the emitting antenna of emission level polarized signal; The receiving antenna of described reception vertical polarization signal is connected with the four-way that disturbs control module by the second channel of receiver module, disturbs the four-way output terminal of control module to be connected with the emitting antenna of emission vertical polarization signal; Be provided with a transmitting-receiving spacer assembly between described receiving antenna and the emitting antenna.
The active countermeasure set of a kind of self-adaptation cross polarization, described transmitting-receiving spacer assembly adopts the wire netting material to make, and has to make to receive and the emission isolation, and receive-transmit isolation is not less than-25dB.
The active countermeasure set of a kind of self-adaptation cross polarization, comprise: the dual-mode antenna of orthogonal polarization, circulator, receiver module, the time separate circuit, penultimate amplifier, interference control module, described dual-mode antenna is connected with circulator, and the circulator output terminal is connected to the input end of receiver module by the first switch; Described receiver module is provided with the two-way output unit, and one road output unit is then isolating circuit of the input end of the receiver module time output trigger pip that receives signal; Separate circuit when described and comprise three tunnel outputs, output to respectively the first switch, second switch and the 3rd switch; Another road output unit be that the input end of receiver module is processed by two identical first passages and second channel when receiving signal and outputed to respectively third channel and the four-way that disturbs control module, disturb two channel output ends of control module to link to each other with second switch by penultimate amplifier, second switch links to each other with the emission input end of circulator by the 3rd switch, and circulator emission output terminal is connected to dual-mode antenna.
The active countermeasure set of a kind of self-adaptation cross polarization, the first passage of described receiver module and second channel are two identical passages, and each passage is comprised of the low noise amplifier, wave detector, the radio frequency storer that connect successively.
The active countermeasure set of a kind of self-adaptation cross polarization disturbs the third channel of control module to be comprised of the 180 ° of phase shifters, power amplifier, the polarization isolation device that connect successively.Disturb the four-way of control module to be formed by the 0 degree phase shifter, power amplifier, the polarization isolation device that connect successively.
The active countermeasure set of a kind of self-adaptation cross polarization, described dual-mode antenna comprises electromagnetic horn 2 and the parabola antenna 3 of a horizontal polarization electromagnetic horn 1, a vertical polarization, described electromagnetic horn 1 and electromagnetic horn 2 are placed on the positive front end of a parabola antenna 3 simultaneously as feed, the phase center of electromagnetic horn 1 and electromagnetic horn 2 overlaps with the focus of parabola antenna 3; Described dual-mode antenna has and receives simultaneously horizontal polarization signal and vertical polarization signal, has emission level polarized signal and vertical polarization signal.
A kind of self-adaptation cross polarization Active Jamming Method adopts the cross polarization Active Jamming Method that transmits and receives simultaneously, and its step is as follows:
1, adopt orthogonal polarization receiving antenna, orthogonal polarization emitting antenna, and the transmitting-receiving spacer assembly that adopts the wire netting material to make connects in the middle of orthogonal polarization receiving antenna, orthogonal polarization emitting antenna;
2, the horizontal polarization signal that receives when receiving antenna and the vertical polarization signal of reception are input to respectively first passage and the second channel of receiver module;
3, be connected low noise amplifier, wave detector, the radio frequency memory processes that connects with second channel through first passage, be input to respectively the third channel and the four-way that disturb control module;
4, the third channel of 180 degree phase shifters through connecting successively, power amplifier, polarization isolation device is processed respectively with the four-way of the 0 degree phase shifter that is connected successively connection, power amplifier, polarization isolation device, is input to respectively transmission antennas transmit horizontal polarization signal/emission vertical polarization signal;
In the time of the transmission antennas transmit signal, the transmitting-receiving spacer assembly can make receiving antenna not receive signal, can not be coupled into receiving antenna and receiver module when making jammer emission undesired signal; Receive and the emission isolation thereby make, receive-transmit isolation is greater than-25dB.
A kind of self-adaptation cross polarization Active Jamming Method, it is described that control module is that process to be produced with interference output signals self-adaptation within pulse repetition time radar signal polarization strict orthogonal through disturbing, this interference output signals radiate by the orthogonal polarization emitting antenna of a horizontally-polarized antenna and a vertical polarized antenna composition, and form the cross polarization interference signal, the cross polarization interference signal comprises emission level polarized signal and vertical polarization signal.
A kind of self-adaptation cross polarization Active Jamming Method, the cross polarization Active Jamming Method that adopts timesharing to transmit and receive, its step is as follows:
1, adopts two antennas of orthogonal polarization with reception or emission orthogonally polarized component;
2, accepting state, when two antennas are sent into receiver module by the first switch of circulator, conducting respectively with the horizontal polarization signal and the vertical polarization signal that receive, the horizontal polarization signal that receives is connected receiver module with the vertical polarization signal first passage is connected low noise amplifier, wave detector, the radio frequency memory processes that connects with second channel, be input to respectively the third channel and the four-way that disturb control module;
3, emission state, when isolating circuit receives trigger pip at that time, in time, separate circuit output first via command signal the first switch disconnected, exporting simultaneously the second tunnel command signal connects second switch, make horizontal polarization signal and the vertical polarization signal of processing, the third channel of 180 degree phase shifters through connecting successively, power amplifier, polarization isolation device is processed with the four-way of the 0 degree phase shifter that is connected successively connection, power amplifier, polarization isolation device again and is input to respectively the 3rd switch respectively; While isolating circuit output Third Road command signal makes the 3rd switch connection, and the horizontal polarization signal of third channel and four-way output and emission vertical polarization signal pass through penultimate amplifier, circulator to transmission antennas transmit;
4, the time-sharing work by receiving and launching reaches the effect that transmitting-receiving is isolated.
A kind of self-adaptation cross polarization Active Jamming Method, separating circuit when stating has three-way output signal, and three-way output signal connects respectively the first switch, second switch and the 3rd switch;
At initial time, in time, separates circuit and makes the first switch conduction, and second switch and the 3rd switch disconnect, and dual-mode antenna successively by circulator, the first switch, is input to receiver module with the radar signal that receives;
When the ON time of the first switch is
,
Be the pulse repetition time of disturbed radar;
After the ON time of the first switch is complete, receiver module output two paths of signals, one tunnel output trigger pip to the time separate circuit, in time, separates circuit and sends simultaneously command signal the first switch is disconnected, and makes second switch and the 3rd switch conduction; The second tunnel of receiver module outputs signal to the interference control module, disturb control module to produce the cross polarization interference signal, the undesired signal of output is successively by penultimate amplifier, second switch, the 3rd switch, circulator, by dual-mode antenna the cross polarization interference signal is launched at last, be launch time
After finishing launch time, in time, separates circuit and sends command signal, disconnects second switch and the 3rd switch, makes the first switch conduction, carries out periodic duty.
Because adopt aforesaid technical scheme, the present invention has following superiority:
A kind of self-adaptation cross polarization Active Jamming Method of the present invention and device, possesses the orthogonal polarization receiving antenna, orthogonally polarized component that can the receiving radar signal, and then by the receiver module of jammer and the processing of interference control module, the undesired signal of adaptive generation and radar signal polarization strict orthogonal within a pulse repetition time, and radiate by the orthogonal polarization emitting antenna, form the cross polarization interference signal.After this signal is received by monopulse radar, can make radar produce wrong Angle Information, the angle measurement accuracy of decrease monopulse radar.Compare with the monopulse radar perturbation technique of routine, the advantage of self-adaptation cross polarization active chaff is not need to measure the pulse describing word (PDW) of radar signal, do not need to measure the polarized state of radar signal, only process by the radar emission signal being carried out certain interference control, just can adaptive generation cross polarization interference, thereby be relatively easy to obtain stable, effective interference effect, the angle measurement accuracy of decrease monopulse radar.The system architecture of self-adaptation cross polarization interference machine and Project Realization are also uncomplicated, and do not need to adopt a plurality of jammers to work simultaneously, a jammer can reach the interference effect that a plurality of jammers are worked simultaneously, greatly reduce the cost of jammer development/maintenance, can screen the position of important goal, hidden ability and the viability of Effective Raise real goal have a pattern flexible, applied widely, are convenient to the advantages such as extensive layout.
The present invention utilizes the intrinsic Cross polarization pattern characteristic of radar antenna itself different from the main pole pattern characteristics, the undesired signal of adaptive generation and radar work polarization phase quadrature, thus make monopulse radar produce the active chaff of wrong angle on target metrical information.Pass through to compare a kind of radar from the signal acquisition target angular position information of two or more while wave beams when being monopulse tracking radar (Mono pulse tracking Radar), measurement of angle can be carried out based on individual pulse, not being subject to the impact of target echo amplitude scintillation, is a kind of function admirable and widely used tracking technique.Simultaneously, the present invention compares with other active interference, and the range of application of this jammer is more extensive, can be applied to the kinds of platform such as airborne platform, ground surface platform.
The cross polarization interference that the present invention adopts, utilized the intrinsic cross polarization attribute of monopulse radar scanner itself, there is intrinsic angle tracing deviation in the cross polarization signal, some machines of disturbing can be launched the undesired signal arrival radar antenna with the polarization radar quadrature, then can cause the cross polarization response of radar antenna, thereby form larger angle error in tracking.The usefulness of its cross polarization interference depends primarily on the quadrature degree that undesired signal polarization and radar emission polarize, and interfering signal power.If the polarization with radar emission that cross polarization interference can be strict keeps quadrature, and stronger jamming power is arranged, then interference effect can be very good; If the polarization with radar emission that cross polarization interference can not be strict keeps quadrature, jammer might become a beacon so, so that radar tracking precision is better.
In actual applications, because the non-ideal factors such as Texas tower motion, multiple scattering, certain variation occured in the different pulse repetition times so that radar emission is polarized in, to realize the polarization of undesired signal and the quadrature that radar signal polarizes and keeps strict in a upper relevant processing time and next relevant processing time, then need the emission polarization of real-time tracking radar, and according to the undesired signal of radar emission signal adaptive formation and radar emission polarization orthogonal within the very of short duration time, there is very large technological challenge in this in Project Realization.At present, not yet find to utilize the present invention about the relevant report of monopulse radar scanner build-in attribute development self-adaptation cross polarization interference machine at home and abroad.
Description of drawings
Fig. 1 is the composition structural representation of self-adaptation cross polarization active chaff example 1;
Fig. 2 is that the receiver module of self-adaptation cross polarization active chaff example 1 forms structural representation;
Fig. 3 is that the interference control module of self-adaptation cross polarization active chaff example 1 forms structural representation;
Fig. 4 is the composition structural representation of self-adaptation cross polarization active chaff example 2;
Fig. 5 is that the receiver module of self-adaptation cross polarization active chaff example 2 forms structural representation;
Fig. 6 is that the interference control module of self-adaptation cross polarization active chaff example 2 forms structural representation;
Fig. 7 is that the transmitting-receiving common antenna of self-adaptation cross polarization active chaff example 2 forms schematic diagram;
Fig. 8 is the Contrast on effect schematic diagram of emulation experiment;
Embodiment
The below is take self-adaptation cross polarization active chaff as example, and the present invention is further described by reference to the accompanying drawings.
Embodiment one
As shown in Figure 1, 2, 3, the active countermeasure set of a kind of self-adaptation cross polarization comprises: receiving antenna, emitting antenna, receiver module, interference control module, receiving antenna and emitting antenna all are cross-polarized antennas; The horizontal polarization signal that described receiving antenna receives is input to the first passage of receiver module, and the vertical polarization signal that receiving antenna receives is input to the second channel of receiver module; The first passage of receiver module exports the third channel that disturbs control module to, and the second channel of receiver module exports the four-way that disturbs control module to.
The first passage of described receiver module is identical with the structure of the second channel of receiver module, and each passage comprises low noise amplifier, wave detector, the radio frequency storer that connects successively.
The third channel of described interference control module comprises 180 degree phase shifters, power amplifier, the polarization isolation device that connects successively; Disturb the four-way of control module to comprise 0 degree phase shifter, power amplifier, the polarization isolation device that connects successively.
In the composition schematic diagram of interference unit example 1 shown in Figure 1, be provided with a transmitting-receiving spacer assembly in the middle of the emitting antenna of jammer and the receiving antenna, adopt the wire netting material to make, can guarantee in the antenna transmission signal, receiving antenna is not received signal, thereby reception and emission are isolated, and the receive-transmit isolation of transmitting-receiving spacer assembly is not less than-25dB, thereby can not be coupled into receiving antenna and receiver module when guaranteeing jammer emission undesired signal.Receiving antenna comprises a horizontally-polarized antenna and a vertical polarized antenna, two antennas are sent the horizontal polarization signal and the vertical polarization signal that receive into receiver module, finish the low noise power amplification to the radar emission signal, envelope detection and radio frequency stores processor.The output signal of receiver module is through disturbing control module to produce undesired signal, undesired signal is launched horizontal polarization component and the vertical polarization component of undesired signal by emitting antenna (comprising a horizontally-polarized antenna and a vertical polarized antenna) again, synthesize the mutually orthogonal undesired signal of polarized state and radar signal polarized state in the space, thereby disturb the monopulse radar angle measurement.
Receiver module at example 1 shown in Figure 2 forms in the schematic diagram, and receiver module comprises two identical passages, and each passage comprises low noise amplifier, wave detector, the radio frequency storer that connects successively; The horizontal polarization signal that receiving antenna receives is input to the first passage of receiver module, and the vertical polarization signal that receiving antenna receives is input to the second channel of receiver module.
Interference control module at example 1 shown in Figure 3 forms in the schematic diagram, disturbs control module to comprise two passages, and third channel comprises 180 degree phase shifters, power amplifier, the polarization isolation device that connects successively; Four-way comprises 0 degree phase shifter, power amplifier, the polarization isolation device that connects successively.The first passage of receiver module exports the third channel that disturbs control module to, and the second channel of receiver module exports the four-way that disturbs control module to, and the enlargement factor of power amplifier is 100 times, and the isolation of polarization isolation device is not less than-20dB.
Embodiment two
Shown in Fig. 4,5,6,7, the active countermeasure set of a kind of self-adaptation cross polarization, comprise: the dual-mode antenna of orthogonal polarization, circulator, receiver module, the time separate circuit, penultimate amplifier, interference control module, described dual-mode antenna is connected with circulator, and the circulator output terminal is connected to the input end of receiver module by the first switch; Described receiver module is provided with the two-way output unit, and one road output unit is then isolating circuit of the input end of the receiver module time output trigger pip that receives signal; Separate circuit when described and comprise three tunnel outputs, output to respectively the first switch, second switch and the 3rd switch; Another road output unit be that the input end of receiver module is processed by two identical first passages and second channel when receiving signal and outputed to respectively third channel and the four-way that disturbs control module, disturb two channel output ends of control module to link to each other with second switch by penultimate amplifier, second switch links to each other with the emission input end of circulator by the 3rd switch, and circulator emission output terminal is connected to dual-mode antenna.
The first passage of described receiver module and second channel are two identical passages, and each passage is comprised of the low noise amplifier, wave detector, the radio frequency storer that connect successively.Disturb the third channel of control module to be formed by the 180 ° of phase shifters, power amplifier, the polarization isolation device that connect successively.Disturb the four-way of control module to be formed by the 0 degree phase shifter, power amplifier, the polarization isolation device that connect successively.
In the composition schematic diagram of jammer example 2 shown in Figure 4, comprise transmitting-receiving common antenna, circulator, the first switch, receiver module, the time separate circuit, second switch and the 3rd switch, penultimate amplifier, interference control module.Wherein, the transmitting-receiving common antenna comprises the first dual-mode antenna and the second dual-mode antenna, the first dual-mode antenna is horizontal polarization, the second dual-mode antenna is vertical polarization, two antennas are connected on the circulator, the output signal of circulator is connected on the receiver module by the first switch, and the output signal of receiver module is connected in turn in order disturbs control module, penultimate amplifier, on second switch and the 3rd switch.In time, separate circuit three-way output signal arranged, and connects respectively the first switch, second switch and the 3rd switch.At initial time, in time, separates circuit and makes the first switch conduction, and second switch and the 3rd switch disconnect, and dual-mode antenna successively by circulator, the first switch, is input to receiver module, when the ON time of the first switch with the radar signal that receives
For
,
Be the pulse repetition time of disturbed radar.After the ON time of the first switch is complete, receiver module output two paths of signals, one tunnel output trigger pip to the time separate circuit, in time, separates circuit and sends simultaneously command signal the first switch is disconnected, and makes second switch and the 3rd switch conduction; The second tunnel of receiver module outputs signal to the interference control module, disturb control module to produce the cross polarization interference signal, the undesired signal of output is successively by penultimate amplifier, second switch, the 3rd switch, circulator, by dual-mode antenna the cross polarization interference signal is launched at last, be launch time
After finishing launch time, in time, separates circuit and sends command signal, disconnects second switch and the 3rd switch, makes the first switch conduction, so periodic duty.
Receiver module at example 2 shown in Figure 5 forms in the schematic diagram, and receiver module comprises two identical passages, and passage comprises low noise amplifier, wave detector, the radio frequency storer that connects successively; The horizontal polarization signal that receiving antenna receives is input to the first passage of receiver module, and the vertical polarization signal that receiving antenna receives is input to the second channel of receiver module.
Interference control module at example 2 shown in Figure 6 forms in the schematic diagram, disturbs control module to comprise two passages, and third channel comprises 180 degree phase shifters, power amplifier, the polarization isolation device that connects successively; Four-way comprises 0 degree phase shifter, power amplifier, the polarization isolation device that connects successively.The first passage of receiver module exports the third channel that disturbs control module to, and the second channel of receiver module exports the four-way that disturbs control module to.The enlargement factor of power amplifier is 100 times, and the isolation of polarization isolation device is not less than-20dB.
No matter the radar emission signal is linear polarization or circular polarisation, jammer by the present invention's design can produce cross-polarized undesired signal so, the polarized state of undesired signal and radar emission signal is strict orthogonal, and interference signal amplitude is larger than radar echo signal amplitude, thereby disturbs the angle measurement function of monopulse radar.
Dual-mode antenna at example shown in Figure 72 forms in the schematic diagram, the electromagnetic horn 2 and the parabola antenna 3 that comprise a horizontal polarization electromagnetic horn 1, a vertical polarization, electromagnetic horn 1 and electromagnetic horn 2 are placed on the positive front end of a parabola antenna 3 simultaneously as feed, the phase center of electromagnetic horn 1 and electromagnetic horn 2 overlaps with the focus of parabola antenna 3.Dual-mode antenna can receive horizontal polarization signal and vertical polarization signal simultaneously, also can be used for emission level polarized signal and vertical polarization signal.
In example 2, adopted another mentality of designing (receiving and the emission time-sharing work), reached the effect of transmitting-receiving isolation, so do not received and dispatched spacer assembly in the example 2.
Fig. 8 is the Contrast on effect schematic diagram of emulation experiment; Shown in Figure 8 is the angle discriminating curve of monopulse radar behind the self-adaptation cross polarization interference, and transverse axis is the true angle of target, and the longitudinal axis is that monopulse radar is to the angle measurement of target.Emulation experiment is the monopulse radar for an X-band, radar emission horizontal polarization signal, the angle of the monopulse radar under normal operation differentiates that curve is shown in " solid line " among the figure, can find out, angle differentiates that slope of a curve is 1, in the situation that there is not the self-adaptation cross polarization interference, the true angle of the angle measurement of target and target is on all four, and angle measurement is very accurate.
Receive the undesired signal of self-adaptation cross polarization interference machine generation when monopulse radar after, and interfering signal power is 100 times of radar signal power, this moment, the angle of monopulse radar differentiated that 180 ° of upsets occur curve, slope becomes " 1 ", the true angle of the angle measurement of monopulse radar and target is in opposite position fully, the angle-measurement accuracy decrease of monopulse radar, self-adaptation cross polarization interference have reached good angle interference effect.
Claims (10)
1. active countermeasure set of self-adaptation cross polarization, it is characterized in that: comprising: receiving antenna, emitting antenna, receiver module, interference control module, described receiving antenna is for receiving the receiving antenna of horizontal polarization signal/reception vertical polarization signal in orthogonal polarization, and described emitting antenna is the receiving antenna of emission level polarized signal/emission vertical polarization signal; The receiving antenna of described reception horizontal polarization signal is connected with the third channel that disturbs control module by the first passage of receiver module, disturbs the third channel output terminal of control module to be connected with the emitting antenna of emission level polarized signal; The receiving antenna of described reception vertical polarization signal is connected with the four-way that disturbs control module by the second channel of receiver module, disturbs the four-way output terminal of control module to be connected with the emitting antenna of emission vertical polarization signal; Be provided with a transmitting-receiving spacer assembly between described receiving antenna and the emitting antenna.
2. the active countermeasure set of a kind of self-adaptation cross polarization according to claim 1 is characterized in that: described transmitting-receiving spacer assembly, and adopt the wire netting material to make, have to make and receive and the emission isolation, receive-transmit isolation is not less than-25dB.
3. active countermeasure set of self-adaptation cross polarization, it is characterized in that: comprising: the dual-mode antenna of orthogonal polarization, circulator, receiver module, the time separate circuit, penultimate amplifier, interference control module, described dual-mode antenna is connected with circulator, and the circulator output terminal is connected to the input end of receiver module by the first switch; Described receiver module is provided with the two-way output unit, and one road output unit is then isolating circuit of the input end of the receiver module time output trigger pip that receives signal; Separate circuit when described and comprise three tunnel outputs, output to respectively the first switch, second switch and the 3rd switch; Another road output unit be that the input end of receiver module is processed by two identical first passages and second channel when receiving signal and outputed to respectively third channel and the four-way that disturbs control module, disturb two channel output ends of control module to link to each other with second switch by penultimate amplifier, second switch links to each other with the emission input end of circulator by the 3rd switch, and circulator emission output terminal is connected to dual-mode antenna.
4. according to claim 1, the active countermeasure set of 3 described a kind of self-adaptation cross polarizations, it is characterized in that: the first passage of described receiver module and second channel are two identical passages, and each passage is comprised of the low noise amplifier, wave detector, the radio frequency storer that connect successively.
5. according to claim 1, the active countermeasure set of 3 described a kind of self-adaptation cross polarizations, it is characterized in that: disturb the third channel of control module to be formed by the 180 ° of phase shifters, power amplifier, the polarization isolation device that connect successively; Disturb the four-way of control module to be formed by the 0 degree phase shifter, power amplifier, the polarization isolation device that connect successively.
6. the active countermeasure set of a kind of self-adaptation cross polarization according to claim 3, it is characterized in that: described dual-mode antenna comprises electromagnetic horn 2 and the parabola antenna 3 of a horizontal polarization electromagnetic horn 1, a vertical polarization, described electromagnetic horn 1 and electromagnetic horn 2 are placed on the positive front end of a parabola antenna 3 simultaneously as feed, the phase center of electromagnetic horn 1 and electromagnetic horn 2 overlaps with the focus of parabola antenna 3; Described dual-mode antenna has and receives simultaneously horizontal polarization signal and vertical polarization signal, has emission level polarized signal and vertical polarization signal.
7. self-adaptation cross polarization Active Jamming Method is characterized in that: adopt the cross polarization Active Jamming Method that transmits and receives simultaneously, its step is as follows:
1), adopts orthogonal polarization receiving antenna, orthogonal polarization emitting antenna and the transmitting-receiving spacer assembly connection of adopting the wire netting material to make in orthogonal polarization receiving antenna, orthogonal polarization emitting antenna centre;
2) the horizontal polarization signal that, receives when receiving antenna and the vertical polarization signal of reception are input to respectively first passage and the second channel of receiver module;
3), low noise amplifier, wave detector, the radio frequency memory processes that connects successively with second channel through first passage, be input to respectively the third channel and the four-way that disturb control module;
4), the third channels of 180 degree phase shifters through connecting successively, power amplifier, polarization isolation device process respectively with the four-way that is connected the 0 degree phase shifter that connects successively, power amplifier, polarization isolation device, are input to respectively transmission antennas transmit horizontal polarization signal/emission vertical polarization signal;
In the time of the transmission antennas transmit signal, the transmitting-receiving spacer assembly can make receiving antenna not receive signal, can not be coupled into receiving antenna and receiver module when making jammer emission undesired signal; Receive and the emission isolation thereby make, receive-transmit isolation is greater than-25dB.
8. a kind of self-adaptation cross polarization Active Jamming Method according to claim 7, it is characterized in that: described control module is that process to be produced with interference output signals self-adaptation within pulse repetition time radar signal polarization strict orthogonal through disturbing, this interference output signals radiate by the orthogonal polarization emitting antenna of a horizontally-polarized antenna and a vertical polarized antenna composition, and form the cross polarization interference signal, the cross polarization interference signal comprises emission level polarized signal and vertical polarization signal.
9. self-adaptation cross polarization Active Jamming Method is characterized in that: the cross polarization Active Jamming Method that adopts timesharing to transmit and receive, and its step is as follows:
1), adopts two antennas of orthogonal polarization with reception or emission orthogonally polarized component;
2), accepting state, when two antennas are sent into receiver module by the first switch of circulator, conducting respectively with the horizontal polarization signal and the vertical polarization signal that receive, the horizontal polarization signal that receives is connected receiver module with the vertical polarization signal first passage is connected low noise amplifier, wave detector, the radio frequency memory processes that connects with second channel, be input to respectively the third channel and the four-way that disturb control module;
3), emission state, when isolating circuit receives trigger pip at that time, in time, separate circuit output first via command signal the first switch disconnected, exporting simultaneously the second tunnel command signal connects second switch, make horizontal polarization signal and the vertical polarization signal of processing, the third channel of 180 degree phase shifters through connecting successively, power amplifier, polarization isolation device is processed with the four-way of the 0 degree phase shifter that is connected successively connection, power amplifier, polarization isolation device again and is input to respectively the 3rd switch respectively; While isolating circuit output Third Road command signal makes the 3rd switch connection, and the horizontal polarization signal of third channel and four-way output and emission vertical polarization signal pass through penultimate amplifier, circulator to transmission antennas transmit;
4), by receiving and the time-sharing work of emission, reach the effect of transmitting-receiving isolation.
10. a kind of self-adaptation cross polarization Active Jamming Method according to claim 9 is characterized in that: separating circuit when described has three-way output signal, and three-way output signal connects respectively the first switch, second switch and the 3rd switch;
At initial time, in time, separates circuit and makes the first switch conduction, and second switch and the 3rd switch disconnect, and dual-mode antenna successively by circulator, the first switch, is input to receiver module with the radar signal that receives;
When the ON time of the first switch is
,
Be the pulse repetition time of disturbed radar;
After the ON time of the first switch is complete, receiver module output two paths of signals, one tunnel output trigger pip to the time separate circuit, in time, separates circuit and sends simultaneously command signal the first switch is disconnected, and makes second switch and the 3rd switch conduction; The second tunnel of receiver module outputs signal to the interference control module, disturb control module to produce the cross polarization interference signal, the undesired signal of output is successively by penultimate amplifier, second switch, the 3rd switch, circulator, by dual-mode antenna the cross polarization interference signal is launched at last, be launch time
After finishing launch time, in time, separates circuit and sends command signal, disconnects second switch and the 3rd switch, makes the first switch conduction, carries out periodic duty.
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| CN201210379111.9A CN102955151B (en) | 2012-10-09 | 2012-10-09 | Adaptive cross-polarization active jamming method and device |
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| CN201210379111.9A CN102955151B (en) | 2012-10-09 | 2012-10-09 | Adaptive cross-polarization active jamming method and device |
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| CN104215938A (en) * | 2014-09-30 | 2014-12-17 | 中国人民解放军63892部队 | Polarization detection and recognition method and device for terrain rebound interference |
| CN104635215A (en) * | 2013-11-07 | 2015-05-20 | 北京航天长征飞行器研究所 | Jamming decision device based on SOPC (System-on-a-Programmable-Chip) |
| CN104678365A (en) * | 2015-03-20 | 2015-06-03 | 河海大学 | Adaptive interference cancellation method for radar jammer |
| CN104914415A (en) * | 2015-05-21 | 2015-09-16 | 中国人民解放军63892部队 | Single-pulse radar coherent jamming method based on target range profile template matching |
| CN106125053A (en) * | 2016-06-17 | 2016-11-16 | 中国电子科技集团公司第十研究所 | Pulse Doppler radar polarization anti jamming method |
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| CN113655449A (en) * | 2021-07-30 | 2021-11-16 | 中国航空工业集团公司济南特种结构研究所 | Device and method for reducing coupling signals of transmitting and receiving antenna in RCS test |
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