CN116359852A - Double-array-surface cooperative control spoofing pulse generation device and method - Google Patents
Double-array-surface cooperative control spoofing pulse generation device and method Download PDFInfo
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Abstract
The application provides a double-array-surface cooperative control spoofing pulse generating device and a method. The device transmits the deception signal in the first frequency band and the real signal in the second frequency band through the radar transmitting module, the dual-band antenna array radiates the deception pulse in the first frequency band and the real pulse in the second frequency band based on the unified time sequence, the radar receiving module receives the target echo signal corresponding to the deception pulse and the active false target interference signal corresponding to the transmitting pulse, the signal analyzing module detects and analyzes the target echo signal and the active false target interference signal, the analysis result is obtained to judge whether the deception pulse signal reaches the expected result, the self-adaptive resource management module receives the analysis result and determines the system control strategy, and the cooperative control and the resource scheduling of the dual-band antenna array are realized. The cross-frequency-band spoofing pulse generation is realized through the dual-frequency-band array surface cooperative control device, so that an jammer cannot intercept real pulses, the interference effect is weakened from the source, and the anti-interference capability of the radar system is effectively improved.
Description
Technical Field
The invention relates to the field of electronic countermeasures of multifunctional phased array radars, in particular to a double-array-surface cooperative control deception pulse generating device and a generating method.
Background
Electronic warfare behavior includes detection and interference to enemy electronic systems, electronic protection to own electronic systems, and countermeasures against technical investigation, human interference and natural interference. Typical electronic countermeasures (ECCM) include protecting the systems from interference and from enemy ELINT detection.
The radio frequency store-and-forward (DRFM) technology is a mainstream technology adopted by modern radar jammers, and is used for realizing deception and interference on threat targets by collecting radar signals, storing and copying the signals with high fidelity, performing frequency shifting, time delay, superposition and other modulation to generate deception false target signals related to the radar signals. With the development of high-speed acquisition and processing technology, the DRFM technology can carry out digital quantization and high-precision replication on radar signals, and particularly with the development of broadband receiver technology, the anti-interference means based on a single radar antenna are more and more difficult to play a role due to the limitation of the bandwidth of the anti-interference means. The instantaneous bandwidth of the current main stream of jammers with DRFM function does not exceed 2GHz, and the jammers can not simultaneously interfere the radio frequency signals with the frequency interval of more than 2 GHz.
The deception pulse is an active deception interference resisting method of the phased array radar, the deception pulse is added from the system design perspective, the detection and interception of an enemy jammer to radar emission signals are avoided from the source, the correlation of false target interference and real pulse is destroyed, and the interference effect is weakened.
In the prior art, the conventional deception pulse is difficult to cope with the problems of a broadband jammer adopting a DRFM technology, and the like, so that the anti-jamming capability of a radar system is reduced, and the anti-jamming reliability of the radar system is poor.
Disclosure of Invention
The invention provides a double-array-surface cooperative control spoofing pulse generating device and a generating method, and the method is suitable for a double-frequency-band phased array radar with a cooperative control function.
A first aspect of the present invention provides a double-array-surface cooperative control spoofing pulse generating apparatus, comprising: the radar transmitting module is configured to generate and transmit a spoofing signal in a first frequency band and a real signal in a second frequency band according to radar signal parameters;
a dual-band antenna array configured to radiate spoofed pulses of a first frequency band and real pulses of a second frequency band based on a uniform timing sequence;
the radar receiving module comprises a first receiver and a second receiver, and is configured to receive a target echo signal corresponding to the deception pulse and an active false target interference signal corresponding to the transmitting pulse based on the unified time sequence;
the signal analysis module is configured to detect and analyze the target echo signal and the active false target interference signal to obtain an analysis result;
the self-adaptive resource management module is configured to judge whether the spoofing pulse signal reaches an expected result by receiving an analysis result, and adjust a system control strategy to realize cooperative control and resource scheduling of the dual-band antenna array surface;
the self-adaptive resource management module is electrically connected with the signal analysis module and the radar receiving module respectively.
Preferably, the dual band antenna array plane comprises: the first array surface and the second array surface are arranged on the same antenna frame, and the spoofed signals and the real signals are respectively radiated to the space of the first array surface and the space of the second array surface through the dual-band array.
Preferably, the radar transmitting module further comprises:
a frequency synthesis module for generating a reference signal, and a plurality of waveform generators for transmitting a spoofed signal of a first frequency band and a true signal of a second frequency band;
preferably, the radar receiving module further includes:
and the digital processing unit comprises a first receiver and a second receiver, and the first receiver and the second receiver are configured to respectively digitally process the deception signal of the first frequency band and the real signal of the second frequency band.
Preferably, the apparatus further comprises: and the timing control module is configured to output synchronous control and/or cooperative control signals for controlling the timing relation of the deceptive pulse and the transmitting pulse, and the deceptive pulse is emitted as a leading pulse.
A second aspect of the present application provides a method for generating spoofing pulses with dual-array cooperative control, the method comprising:
starting a radar, collecting radar signals in an electromagnetic environment, and analyzing electromagnetic spectrums of the radar signals;
according to the analysis result of the electromagnetic spectrum, selecting a spoofing signal working frequency point and a real signal working frequency point of the dual-band antenna array surface;
under the control of a unified time sequence, generating and transmitting a spoofing signal of a first frequency band and a real signal of a second frequency band according to radar signal parameters, and radiating the spoofing signal and the real signal to a space through the dual-frequency-band antenna array surface respectively;
under the control of a unified time sequence, receiving a target echo signal corresponding to the deception pulse and an active false target interference signal corresponding to the emission pulse;
detecting and analyzing the target echo signal and the active false target interference signal to obtain an analysis result;
and adjusting a system control strategy according to the analysis result to realize cooperative control and resource scheduling of the dual-band antenna array surface.
In one possible implementation manner of the second aspect, collecting radar signals in an electromagnetic environment, and analyzing electromagnetic spectrum of the radar signals includes:
acquiring the noise power of the electromagnetic environment signal and the interference condition of the current radar signal in the corresponding frequency band,
and analyzing the electromagnetic spectrum of the radar signal according to the noise power and the interference condition, and obtaining the purity of the electromagnetic spectrum.
In one possible implementation manner of the second aspect, generating and transmitting the spoofing signal of the first frequency band and the real signal of the second frequency band according to the radar signal parameter, and radiating the spoofing signal and the real signal of the second frequency band to the space through the dual-band antenna array plane respectively includes:
the frequency separation of the first frequency band and the second frequency band exceeds at least the instantaneous operating bandwidth of the radar receiving module when in operation, and,
the transmission time interval of the first frequency band and the second frequency band is smaller than the switching time of the signal types received by the first receiver and/or the second receiver.
In one possible implementation manner of the second aspect, the controlling of the unified timing includes:
the pulse width of the real pulse is smaller than that of the spoof pulse, or
The deceptive pulse is transmitted before and after the transmission of the real pulse, respectively, with the transmission interval of the real pulse and the deceptive pulse being less than a preset time interval, preferably with the transmission interval being less than 1us.
In one possible implementation manner of the second aspect, performing detection analysis on the target echo signal and the active decoy interference signal, and obtaining an analysis result includes:
analyzing the noise floor of the target echo signal, judging whether the rising amplitude of the noise floor is higher than the preset amplitude,
if yes, judging that the dual-band array surface is interfered by noise suppression,
if not, continuously carrying out pulse compression and constant false alarm detection on the target echo signal, and recording the detection result.
In one possible implementation manner of the second aspect, continuously performing pulse compression and constant false alarm detection on the target echo signal, and recording the detection result includes:
under the condition that the existence of a detection point target is detected, performing track matching on a detection point track and a transmitting array surface of a dual-band antenna array surface corresponding to a real pulse;
under the condition that track matching is unsuccessful, judging that the deception pulse generates effective deception;
under the condition that the track matching is successful, judging that effective deception is not generated, storing a judging result, and adjusting a system control strategy according to the judging result to realize cooperative control and resource scheduling of the dual-band antenna array surface;
the system control strategy comprises the following steps: the pulse radiation type and/or the pulse transmitting frequency band and/or the pulse waveform and/or the spoofing pulse and the real pulse transmitting time interval of each array surface of the dual-band antenna array surface.
According to the technical scheme provided by the application, the method at least has the following beneficial technical effects:
under the control of a system unified time sequence, the radar transmitting module generates a cross-frequency-band spoofing signal and a real signal according to radar signal parameters, the first array surface and the second array surface which are positioned in the same space are respectively controlled by the dual-frequency-band array surface based on the unified time sequence to generate spoofing pulses and transmitting pulses, the spoofing pulses and the transmitting pulses are respectively operated in different frequency bands through the dual-frequency-band array surface cooperative control, so that the generation of the cross-frequency-band spoofing pulses is realized, an interference machine cannot intercept the radar real pulse signal, the interference effect is weakened from the source, and the anti-interference capability of a radar system can be effectively improved.
The dual-band array plane shared frequency synthesis module and the time sequence control are smeared, the signal analysis module and the self-adaptive resource management module, whether the deception pulse reaches effective deception is analyzed, the cooperative control and the resource scheduling of the dual-band array plane are realized through the self-adaptive resource management module according to the deception effect of deception signals, and the dragging effect is generated on the channelized jammer with the DRFM function, so that the channelized jammer cannot detect radar real signals, and the anti-interference of the system is effectively implemented.
The frequency interval of the real pulse and the deception pulse sent by the dual-band array surface exceeds the instantaneous working bandwidth of the DRFM receiver, the transmitting time interval of the real pulse and the deception pulse is smaller than the switching time of the received signal of the receiver, and therefore the radar jammer cannot effectively interfere the transmitted signal when the deception pulse is stored and forwarded, the probability that the radar transmitted pulse is intercepted by the jammer is reduced from the source, and the anti-jamming purpose of the system is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings that are required to be used in the description of the embodiments, and it is apparent that the drawings in the following description are only some embodiments of the present invention.
In the accompanying drawings:
fig. 1 is a schematic diagram of a dual-band radar spoofing pulse operation scenario provided by the present invention.
Fig. 2 is a block diagram of a spoof pulse generating device with cooperative control of double planes.
Fig. 3 is a diagram of a double-array-surface cooperative control spoof pulse generating device provided by the invention.
Fig. 4 is a schematic diagram of a method for generating a spoofing pulse with cooperative control of two planes.
Fig. 5 is a schematic diagram of a dual-array-plane unified timing cooperative control timing provided by the invention.
Fig. 6 is a schematic diagram of a judging manner of effective spoofing provided by the present invention.
Detailed Description
The present invention will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should be noted that the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.
The invention will be further illustrated with reference to specific examples. It should be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Modifications and adaptations of the invention will occur to those skilled in the art and are intended to be within the scope of the invention in practice.
The invention aims to solve the problems that the traditional deception pulse is difficult to deal with a broadband jammer adopting a DRFM technology and the like, and adopts the dual-band antenna array surface to respectively generate deception pulses and transmitting signals based on two different frequency bands, so that deception pulse generation of cross-frequency bands is realized, the jammer can not intercept radar real pulses, the interference effect is weakened from the source, and the anti-interference capability of a radar system can be effectively improved.
The following is a detailed description of preferred embodiments of the present invention with reference to fig. 1 to 6:
specifically, fig. 1 shows a schematic diagram of a dual-band radar spoofing pulse operating scenario. In this embodiment, the radar signal and the spoofing signal are respectively transmitted by different antenna array planes installed on the same caliber under the control of a unified time sequence, and the target echo signal corresponding to the spoofing pulse and the active false target interference signal corresponding to the transmitting pulse are received to generate a towing effect on the channelized jammer with the DRFM function, so that the channelized jammer cannot detect the radar real signal, thereby effectively implementing the anti-interference of the system.
As shown in fig. 2, the present invention provides a block diagram of a double-array-surface cooperative control spoofing pulse generating apparatus, which includes:
the radar transmitting module 100, the radar transmitting module 100 is configured to generate and transmit a spoofing signal in a first frequency band and a real signal in a second frequency band according to radar signal parameters;
a dual band antenna array plane 200, the dual band antenna array plane 200 being configured to radiate spoofed pulses of a first frequency band and real pulses of a second frequency band based on a uniform timing sequence;
the radar receiving module 300, the radar receiving module 300 is configured to receive a target echo signal corresponding to the deception pulse and an active false target interference signal corresponding to the transmitting pulse based on the unified timing;
the signal analysis module 400 is configured to detect and analyze the target echo signal and the active false target interference signal, and acquire an analysis result;
the self-adaptive resource management module 500 is configured to judge whether the spoofing pulse signal reaches an expected result by receiving the analysis result, and adjust a system control strategy to realize cooperative control and resource scheduling of the dual-band antenna array plane 200;
the signal analysis module 400 is electrically connected to the radar receiving module 300, and the adaptive resource management module 500 is electrically connected to the signal analysis module 400 and the radar receiving module 300, respectively.
As shown in fig. 3, in a graph of a spoofing pulse generating device with cooperative control of dual-band antenna array planes, a dual-band antenna array plane 200 in the device may be a dual-band common-caliber phased array antenna array plane, which includes: the first array surface 201 and the second array surface 202 are arranged on the same antenna frame, and the spoofed signal and the true signal radiate to the space of the first array surface 201 and the space of the second array surface 202 respectively through the dual-band array surface 100.
The radar transmitting module 100 further includes: a frequency synthesis 101 comprising a frequency synthesis module 1013 for generating a reference signal, and a number of waveform generators for transmitting a spoofed signal of a first frequency band and a true signal of a second frequency band, including a waveform generator 1011 and a waveform generator 1012; the waveform generator 1011 and the waveform generator 1012 generate real pulses of real signals and spoof pulses corresponding to spoof signals across the frequency band for the first array 201 and the second array 202, respectively.
The frequency synthesizer module 1013 is electrically connected to the dual-band array plane 100 and processes self-combination, and is used for generating a reference signal required by the operation of the device;
the radar receiving module 300 includes a digitizing unit 301, where the digitizing unit includes a first receiver 3011 and a second receiver 3012, where the first receiver and the second receiver are configured to digitize the spoofed signal in the first frequency band and the true signal in the second frequency band, respectively, for amplifying, filtering, and collecting the received spoofed signal and the true signal of the first array plane 201 and the second array plane 202, respectively, and the first receiver 3011 and the second receiver 3012 may be DRFM receivers.
In an embodiment of the present application, for the signal emitted by the first array 201 is one of a spoofing signal and a real signal, the second array 202 correspondingly emits another signal, and the types of signals emitted by the first array 201 and the second array 202 are not particularly limited, for example, the first array or the second array may be selected for transceiving by the adaptive management module 500 and the timing control module 600 that are shared by the dual-band arrays, for example, under the control of the dual-band adaptive management module 500 and the timing control module 600, respectively, for the working signals that emit the spoofing pulse and the radar real pulse.
In an embodiment of the present application, the dual-band co-aperture radar array plane adopts a frequency diversity design, the two arrays work in different frequency bands, the two arrays are disposed on the same plane, and the first array plane 201 and the second array plane 202 may adopt a distributed aperture design or a co-aperture nested design, which is not limited herein.
In an embodiment of the present application, the apparatus further comprises a timing control module 600, the timing control module 600 being configured to output a synchronization control and/or cooperative control signal controlling the timing relationship of the spoofing pulse and the transmitting pulse, the spoofing pulse being emitted as a preamble pulse. The timing control module 600 generates synchronous control and/or cooperative control signals required by the system, which are electrically connected with the frequency synthesizer 101, the first array 201 and the second array 202, the first receiver 3011 and the receiver 3012, and the signal analysis module 400 receives digital signals received by the radar receiving module 300 corresponding to the dual-band antenna array 200, and performs processes such as pulse compression, target detection, track filtering, and the like; the adaptive resource management module 500 is configured to implement resource management of the dual-band antenna array plane 200, uniformly generate a system control policy, and implement cooperative control of the system.
Further, the adaptive resource management module 500 may decide whether to adjust a system control policy and/or a transmission policy of the radar transmission module 100 according to the spoofing effect, so as to implement cooperative control and resource scheduling of the dual-band antenna array plane; the waveform generator 1011 and the waveform generator 1012 can receive the scheduling command of the adaptive resource management module 500, respectively generate the waveform of the transmitted real pulse and the waveform of the spoofed pulse under the control 600 of the time sequence signal, radiate the waveforms to the space through the first array surface 201 and the array surface 20222, thereby realizing the generation of the spoofed pulse across frequency bands and effectively implementing the anti-interference of the system.
Further, the adaptive resource management module 500 realizes waveform generation and selection adaptation, frequency selection adaptation, beam management control adaptation and task scheduling adaptation of the real signal of the first frequency band and the spoofed signal of the second frequency band radiated by the dual-band antenna array plane 200 according to the environmental conditions and interference conditions actually faced by the radar, so that the system resource of the radar can be maximally adapted to the continuously-changing battlefield environment and can be counted.
In an embodiment of the present application, as shown in fig. 4, the present invention provides a method for generating a spoofing pulse with cooperative control of double planes, which includes the following steps:
step S1: starting a radar, collecting radar signals in an electromagnetic environment, and analyzing electromagnetic spectrums of the radar signals;
step S2: according to the analysis result of the electromagnetic spectrum, selecting a spoofing signal working frequency point and a real signal working frequency point of the dual-band antenna array surface;
step S3: under the control of a unified time sequence, generating and transmitting a spoofing signal of a first frequency band and a real signal of a second frequency band according to radar signal parameters, and radiating the spoofing signal and the real signal to a space through the dual-frequency-band antenna array surface respectively;
step S4: under the control of the unified time sequence, the radar receiving module is configured to receive a target echo signal corresponding to the deception pulse and an active false target interference signal corresponding to the transmitting pulse based on the unified time sequence;
step S5: detecting and analyzing the target echo signal and the active false target interference signal to obtain an analysis result;
step S6: and adjusting a system control strategy according to the analysis result to realize cooperative control and resource scheduling of the dual-band antenna array surface.
In the step S1, collecting radar signals in the electromagnetic environment, and analyzing the electromagnetic spectrum of the radar signals includes:
the method comprises the steps of obtaining noise power of an electromagnetic environment signal and interference condition of a current radar signal in a corresponding frequency band, analyzing electromagnetic spectrum of the radar signal according to the noise power and the interference condition, and obtaining purity of the electromagnetic spectrum.
It can be understood that when the radar starts to work, no signal is emitted, firstly electromagnetic environment signals are collected for analysis, including noise power analysis, frequency band interference condition analysis and the like, and a reference basis is provided for the working frequency point of the radar for emitting real signals through analysis of the electromagnetic environment signals.
In the step S3, generating and transmitting the spoofing signal of the first frequency band and the real signal of the second frequency band according to the radar signal parameters, and radiating the spoofing signal and the real signal of the second frequency band to the space through the dual-band antenna array plane respectively includes:
the frequency separation of the first frequency band and the second frequency band exceeds at least the instantaneous operating bandwidth of the radar receiving module when in operation, and,
the transmission time interval of the first frequency band and the second frequency band is smaller than the switching time of the signal types received by the first receiver and/or the second receiver.
The self-adaptive resource management module selects a frequency point with purer electromagnetic spectrum as a radar signal working frequency point according to a spectrum analysis result, selects another working frequency point of the array surface as a deception pulse working frequency point, and sends instructions to all extensions;
under the control of the same time sequence, the radar transmitting module generates and transmits a deception signal and a real signal according to radar signal parameters, and radiates the deception signal and the real signal to a space through an antenna respectively; specifically, the first array 201 or the second array surface 202 responds to the transmitting synchronous signal, and then the corresponding second array surface 202 or the first array surface 201 responds to the deception pulse signal synchronous signal to respectively generate deception pulses and transmitting pulses; and simultaneously, receiving a target echo signal corresponding to the real signal and an active false target interference signal transmitted by the jammer, detecting and analyzing, determining whether the deception pulse reaches the expected value according to an analysis result, and adjusting and deciding a next scheduling period system control strategy in real time to realize cooperative control and resource scheduling of the dual-band antenna array surface.
In an embodiment of the present application, the control of the unified timing includes: the pulse width of the real pulse is smaller than that of the deception pulse, or the deception pulse is transmitted before and after the real pulse is transmitted, and the transmission interval of the real pulse and the deception pulse is smaller than the preset time interval.
Specifically, as shown in fig. 5, the present invention provides a schematic diagram of a dual-array-plane unified timing cooperative control timing, in which a spoofing pulse and a transmitting pulse timing are generated in a synchronous control and/or cooperative control manner, and are sent to each slave unit, so as to implement synchronous management and control of the sent waveforms, and the control relationship between the spoofing pulse and the transmitting pulse timing includes a first transmitting manner: the radar pulse is transmitted within the transmission envelope of the transmission pulse or in a second transmission mode: the deception pulses are transmitted before and after the radar transmission pulses are transmitted, respectively, and the transmission interval is smaller than 1us.
Specifically, the adaptive resource module 500 adjusts the pulse radiated by the dual-band array plane 100, so that the transmission interval between the real pulse and the spoofed pulse is less than 1 microsecond, and the working frequency interval is not less than 2GHz; for example, the spoofing signal is advanced in time sequence from the real pulse signal emitted by the radar, so that the jammer with the DRFM function first intercepts the spoofing pulse, and when the jammer stores, forwards or otherwise processes the spoofing pulse, the working frequency point corresponding to the real pulse emitted by the radar is not within the instantaneous detection bandwidth of the working frequency point, so that the jammer cannot acquire the real signal emitted by the radar.
Fig. 6 is a schematic diagram of a judging mode of effective spoofing, in which the first array 201 or the second array 202 corresponding to the spoofing pulse transmits an array to receive an echo signal, and the echo signal is amplified by a first receiver 3011 or a second receiver 3012 and is sent to a signal analysis module 400 after analog-to-digital conversion; the signal analysis module 400 analyzes the echo noise floor, judges whether the rising amplitude of the noise floor is higher than the preset amplitude, and considers that the dual-band array surface 200 is interfered by noise suppression if the noise floor is obviously raised; if the noise floor has no obvious change, continuously carrying out pulse compression and constant false alarm detection on the target echo signal, and recording the detection result.
Specifically, pulse compression and constant false alarm detection are continuously performed on the target echo signal, and recording the detection result includes: under the condition that the existence of a detection point target is detected, performing track matching on a detection point track and a transmitting array surface of a dual-band antenna array surface corresponding to a real pulse; under the condition that track matching is unsuccessful, judging that the deception pulse generates effective deception; under the condition that the track matching is successful, the fact that effective deception is not generated is judged, the jammer does not receive the interference of deception pulses, a judging result is stored, and a system control strategy is adjusted according to the judging result, so that cooperative control and resource scheduling of the dual-band antenna array plane 200 are realized.
For example, if a target is detected, performing track matching on the first array plane 201 or the second array plane 202 corresponding to the radar real pulse emission, if the tracks of the dual-band array plane 200 are not matched, determining that the spoofing pulse is effective for spoofing an jammer, otherwise, determining that the spoofing pulse is not interfered, and sending a determination result to the adaptive resource management module 500.
Further, the adaptive resource management module 500 may decide whether to adjust the system control policy according to the spoofing effect, where the adjusting the system control policy includes: the pulse radiation type and/or the pulse transmission frequency band and/or the pulse waveform and/or the spoof pulse and the real pulse transmission time interval, the time sequence relation and the like of each array plane of the dual-band antenna array plane 200.
The foregoing is only a preferred embodiment of the invention, and it will be appreciated by those skilled in the art that various changes in the features and embodiments may be made and equivalents may be substituted without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A double-array-surface cooperative control spoofing pulse generating device, characterized in that the device comprises:
the radar transmitting module is configured to generate and transmit a spoofing signal in a first frequency band and a real signal in a second frequency band according to radar signal parameters;
a dual band antenna array configured to radiate the spoofed pulse of a first frequency band and the actual pulse of a second frequency band based on a uniform timing sequence;
the radar receiving module comprises a first receiver and a second receiver, and is configured to receive a target echo signal corresponding to the deception pulse and an active false target interference signal corresponding to the transmitting pulse based on a unified time sequence;
the signal analysis module is configured to detect and analyze the target echo signal and the active false target interference signal to obtain an analysis result;
the self-adaptive resource management module is configured to judge whether the deception pulse signal reaches an expected result by receiving the analysis result, and adjust a system control strategy to realize cooperative control and resource scheduling of the dual-band antenna array surface;
the signal analysis module is electrically connected with the radar receiving module, and the adaptive resource management module is electrically connected with the signal analysis module and the radar receiving module respectively.
2. The apparatus for generating a spoof pulse of claim 1 wherein said dual band antenna array comprises: the spoofing signal and the real signal are respectively radiated to the space of the first array surface and the space of the second array surface through the dual-band array.
3. The double-array-surface cooperative control spoof pulse generating apparatus of claim 1, wherein the radar transmitting module further comprises:
and the frequency synthesis module comprises a frequency synthesis module for generating a reference signal and a plurality of waveform generators for transmitting the deception signal of the first frequency band and the real signal of the second frequency band.
4. A double-matrix cooperative control spoof pulse generating apparatus in accordance with claim 1, wherein the apparatus further comprises:
a timing control module configured to output a synchronization control and/or cooperative control signal that controls the timing relationship of the spoofing pulse and the transmit pulse, the spoofing pulse being issued as a preamble pulse.
5. A method of generating a spoofing pulse with co-control of a double array, using an apparatus as claimed in any one of claims 1 to 4, the method comprising:
starting a radar, collecting radar signals in an electromagnetic environment, and analyzing electromagnetic spectrums of the radar signals;
according to the analysis result of the electromagnetic spectrum, selecting a spoofing signal working frequency point and a real signal working frequency point of the dual-band antenna array surface;
under the control of a unified time sequence, generating and transmitting a spoofing signal of the first frequency band and a real signal of the second frequency band according to radar signal parameters, and radiating the spoofing signal and the real signal of the second frequency band to a space through the dual-frequency-band antenna array surface respectively;
under the control of the unified time sequence, the radar receiving module is configured to receive a target echo signal corresponding to the deception pulse and an active false target interference signal corresponding to the transmitting pulse based on the unified time sequence;
detecting and analyzing the target echo signal and the active false target interference signal to obtain an analysis result;
and adjusting a system control strategy according to the analysis result to realize cooperative control and resource scheduling of the dual-band antenna array surface.
6. The method of claim 5, wherein collecting radar signals in an electromagnetic environment and analyzing electromagnetic spectrum of the radar signals comprises:
acquiring the noise power of the electromagnetic environment signal and the interference condition of the current radar signal in the corresponding frequency band,
and analyzing the electromagnetic spectrum of the radar signal according to the noise power and the interference condition, and obtaining the purity of the electromagnetic spectrum.
7. The method for generating a spoofing pulse with cooperative control of a dual-band antenna of claim 5, wherein generating and transmitting the spoofing signal in the first frequency band and the real signal in the second frequency band according to radar signal parameters and radiating the spoofing signal in the first frequency band and the real signal in the second frequency band into space through the dual-band antenna array respectively comprises:
the frequency separation between the first frequency band and the second frequency band at least exceeds the instantaneous operating bandwidth of the radar receiving module when in operation, and,
the transmission time interval of the first frequency band and the second frequency band is smaller than the switching time of the signal types received by the first receiver and/or the second receiver.
8. The method for generating the spoofing pulse with cooperative control of double planes as recited in claim 5, wherein the control of the unified timing sequence comprises:
the pulse width of the real pulse is smaller than that of the deceptive pulse, or
And respectively transmitting the deceptive pulse before and after the transmission of the real pulse, wherein the transmission interval between the real pulse and the deceptive pulse is smaller than a preset time interval.
9. The method for generating a spoofing pulse with cooperative control of a double array plane according to claim 5, wherein the detecting and analyzing the target echo signal and the active decoy disturbance signal to obtain an analysis result comprises: analyzing the noise bottom of the target echo signal, judging whether the rising amplitude of the noise bottom is higher than the preset amplitude,
if yes, judging that the dual-band array surface is interfered by noise suppression,
if not, continuously carrying out pulse compression and constant false alarm detection on the target echo signal, and recording a detection result.
10. The method for generating a spoofing pulse with cooperative control of double array planes according to claim 9, wherein continuously performing pulse compression and constant false alarm detection on the target echo signal, recording the detection result includes:
under the condition that the existence of a detection point target is detected, performing track matching on a detection point track and a transmitting array surface of a dual-band antenna array surface corresponding to a real pulse;
under the condition that track matching is unsuccessful, judging that the deception pulse generates effective deception;
under the condition that the track matching is successful, judging that effective deception is not generated, storing a judging result, and adjusting a system control strategy according to the judging result to realize cooperative control and resource scheduling of the dual-band antenna array surface;
the system control strategy comprises the following steps: the pulse radiation type and/or the pulse transmitting frequency band and/or the pulse waveform and/or the spoofing pulse and the real pulse transmitting time interval of each array surface of the dual-band antenna array surface.
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| CN118011333B (en) * | 2024-04-08 | 2024-06-28 | 成都金武科技有限公司 | Intelligent anti-interference method for dual-band phased array radar |
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