CN111077505B - Single-frequency 1-bit mixed interference signal generation method, device, equipment and medium - Google Patents
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Abstract
The application discloses a method, a device, equipment and a medium for generating a single-frequency 1-bit mixed interference signal, wherein the method comprises the following steps: when a preset radar signal sent by a preset radar is intercepted, performing first delay modulation and first phase modulation processing on the preset radar signal to obtain a deception jamming signal; performing one-bit quantization processing on the deception jamming signals based on a plurality of preset single-frequency time-varying thresholds to obtain mixed jamming signals; and sending the mixed interference signal to a preset radar receiver. The application solves the technical problems of complex calculation, overlong operation time, poor interference of the interference signal and the like in the existing interference signal generation process, which influence the interference signal generation cost.
Description
Technical Field
The present application relates to the field of signal technologies, and in particular, to a method, an apparatus, a device, and a medium for generating a single-frequency 1-bit mixed interference signal.
Background
At present, a true false target, namely an interference signal (deception interference target), is often required to be generated for SAR (synthetic aperture radar), so that acquisition and decision of the synthetic aperture radar on the true signal are disturbed, however, the existing interference signal generation process has the technical problems of complex calculation, overlong operation time, poor interference of the interference signal and the like, and the interference signal generation cost is affected.
Disclosure of Invention
The application mainly aims to provide a method, a device, equipment and a medium for generating a single-frequency 1-bit mixed interference signal, which aim to solve the technical problems that the existing interference signal generation process has complex calculation, overlong operation time, poor interference of the interference signal and the like, and the interference signal generation cost is affected.
In order to achieve the above object, an embodiment of the present application provides a method for generating a single-frequency 1-bit mixed interference signal, where the method for generating a single-frequency 1-bit mixed interference signal includes:
when a preset radar signal sent by a preset radar is intercepted, carrying out first delay and first phase modulation processing on the preset radar signal to obtain a deception jamming signal;
performing one-bit quantization processing on the deception jamming signals based on a plurality of preset single-frequency time-varying thresholds to obtain mixed jamming signals;
and sending the mixed interference signal to a preset radar receiver.
Optionally, the step of performing a one-bit quantization process on the spoofing interference signal based on a preset plurality of single-frequency time-varying thresholds to obtain a mixed interference signal includes:
acquiring a target signal value of the deception jamming signal at any time, and selecting a preset target single-frequency time-varying threshold corresponding to any time from the preset multiple single-frequency time-varying thresholds;
comparing the target signal value with the preset target single-frequency time-varying threshold value to obtain a first bit quantized value;
and acquiring other second bit quantized values corresponding to other moments and associated with the preset target single-frequency time-varying threshold, and acquiring a mixed interference signal according to the first bit quantized values and the other second bit quantized values.
Optionally, the preset multiple single-frequency time-varying thresholds adopt random initial phases.
Optionally, the step of performing a one-bit quantization process on the spoofing interference signal based on a preset plurality of single-frequency time-varying thresholds to obtain a mixed interference signal includes:
carrying out matched filter processing on the mixed interference signal to obtain a processed signal;
determining whether the processing signal can be identified by a preset identification instrument;
and if the processing signal is not recognized by the preset recognition instrument, performing second delay modulation and second phase modulation processing on the mixed interference signal.
Optionally, when the preset radar signal sent by the preset radar is intercepted, performing a first delay modulation and a first phase modulation process on the preset radar signal, and the step of obtaining the spoofing interference signal includes:
when a preset radar signal sent by a preset radar is intercepted, determining a target distance between a real target point corresponding to the preset radar signal and a preset false target point;
determining the delay modulation time of the preset radar signal according to the target distance;
and carrying out first delay modulation and first phase modulation processing on the preset radar signal according to the delay modulation time to obtain a deceptive jamming signal.
Optionally, when the preset radar signal sent by the preset radar is intercepted, performing a first delay modulation and a first phase modulation on the preset radar signal, and obtaining the spoofing interference signal includes:
when a preset radar signal sent by a preset radar is intercepted, performing one-bit quantization processing on the preset radar signal based on a plurality of preset single-frequency time-varying thresholds to obtain a single-frequency noise signal;
and performing first delay modulation and first phase modulation processing on the single-frequency noise signal to obtain a deception jamming signal.
The application also provides a single-frequency 1-bit mixed interference signal generating device, which comprises:
the system comprises an interception module, a first phase modulation module and a second phase modulation module, wherein the interception module is used for carrying out first delay modulation and first phase modulation processing on a preset radar signal sent by a preset radar when intercepting the preset radar signal to obtain a deception jamming signal;
the quantization module is used for carrying out one-bit quantization processing on the deception jamming signals based on a plurality of preset single-frequency time-varying thresholds to obtain mixed jamming signals;
and the sending module is used for sending the mixed interference signal to a preset radar receiver.
Optionally, the single frequency 1 bit mixed interference signal generating device includes:
the first acquisition module is used for acquiring a target signal value of the deception jamming signal at any time and selecting a preset target single-frequency time-varying threshold corresponding to any time from the preset multiple single-frequency time-varying thresholds;
the comparison module is used for comparing the target signal value with the preset target single-frequency time-varying threshold value to obtain a first bit quantized value;
the second acquisition module is used for acquiring other second bit quantized values corresponding to other moments and associated with the preset target single-frequency time-varying threshold value, and acquiring a mixed interference signal according to the first bit quantized values and the other second bit quantized values.
Optionally, the preset multiple single-frequency time-varying thresholds adopt random initial phases.
Optionally, the single frequency 1 bit mixed interference signal generating device includes:
the processing module is used for carrying out matched filter processing on the data bits and the sign bits of the mixed interference signal to obtain a processed signal;
the determining module is used for determining whether the processing signal can be identified by a preset identification instrument or not;
and the modulation processing module is used for carrying out second delay modulation and second phase modulation processing on the mixed interference signal if the processing signal is not recognized by a preset recognition instrument.
Optionally, the intercepting module includes:
the first interception unit is used for determining the target distance between a real target point corresponding to the preset radar signal and a preset false target point when intercepting the preset radar signal sent by the preset radar;
the determining unit is used for determining the delay modulation time of the preset radar signal according to the target distance;
and the first modulation processing unit is used for carrying out first delay modulation and first phase modulation processing on the preset radar signal according to the delay modulation time to obtain a deception jamming signal.
Optionally, the intercepting module includes:
the second interception unit is used for performing one-bit quantization processing on the preset radar signal based on a plurality of preset single-frequency time-varying thresholds when intercepting the preset radar signal sent by the preset radar, so as to obtain a single-frequency noise signal;
and the second modulation processing unit is used for carrying out second delay modulation and second phase modulation processing on the single-frequency noise signal to obtain a deception jamming signal.
The application also provides a medium, wherein the medium stores a single-frequency 1-bit mixed interference signal generation program, and the single-frequency 1-bit mixed interference signal generation program realizes the steps of the single-frequency 1-bit mixed interference signal generation method when being executed by a processor.
When a preset radar signal sent by a preset radar is intercepted, performing first delay modulation and first phase modulation processing on the preset radar signal to obtain a deception jamming signal; performing one-bit quantization processing on the deception jamming signals based on a plurality of preset single-frequency time-varying thresholds to obtain mixed jamming signals; and sending the mixed interference signal to a preset radar receiver. In the application, when the preset radar signal sent by the preset radar is intercepted, the preset radar signal is subjected to first delay modulation and first phase modulation processing and one-bit quantization processing of a plurality of preset single-frequency time-varying thresholds in sequence, deception interference is generated by carrying out delay and phase modulation on the preset radar signal, one-bit quantization based on the single-frequency time-varying thresholds is carried out on the deception-interfered preset radar signal, single-frequency noise interference is generated, namely, two kinds of interference are generated simultaneously, the interference intensity is improved, and the preset radar signal is subjected to interference modulation based on the single-frequency time-varying threshold one-bit quantization technology, so that the calculation complexity and the operation time of the interference generating process are reduced, and the generation cost of the interference signal generation is further reduced.
Drawings
Fig. 1 is a schematic flow chart of a first embodiment of a single-frequency 1-bit mixed interference signal generating method according to the present application;
fig. 2 is a detailed flowchart of a step of performing a one-bit quantization process based on a preset plurality of single-frequency time-varying thresholds on the spoofed interfering signal in a second embodiment of the method for generating a single-frequency 1-bit mixed interfering signal according to the present application;
FIG. 3 is a schematic diagram of a device architecture of a hardware operating environment involved in a method according to an embodiment of the present application;
fig. 4 is a schematic diagram of a first scenario involved in the single-frequency 1-bit mixed interference signal generating method of the present application.
Fig. 5 is a schematic diagram of a second scenario involved in the single-frequency 1-bit mixed interference signal generating method of the present application.
Fig. 6 is a schematic diagram of a third scenario involved in the single-frequency 1-bit mixed interference signal generating method according to the present application.
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The application provides a single-frequency 1-bit mixed interference signal generation method, in an embodiment of the single-frequency 1-bit mixed interference signal generation method, referring to fig. 1, the single-frequency 1-bit mixed interference signal generation method comprises the following steps:
step S10, when a preset radar signal sent by a preset radar is intercepted, performing first delay modulation and first phase modulation processing on the preset radar signal to obtain a deception jamming signal;
step S20, performing one-bit quantization processing on the deception jamming signals based on a plurality of preset single-frequency time-varying thresholds to obtain mixed jamming signals;
and step S30, the mixed interference signal is sent to a preset radar receiver.
The method comprises the following specific steps:
step S10, when a preset radar signal sent by a preset radar is intercepted, carrying out first time delay and phase modulation processing on the preset radar signal to obtain a deception jamming signal;
it should be noted that, in this embodiment, the single-frequency 1-bit mixed interference signal generating method is applied to an jammer such as a radar jammer or a mixed interference signal system, where the jammer or the mixed interference signal system belongs to a single-frequency 1-bit mixed interference signal generating device, and since the preset radar signal may be a pulse wave signal, a continuous wave signal, or the like, the mixed interference signal may also be a pulse wave signal, a continuous wave signal, or the like (consistent with the preset radar signal), in this embodiment, when the preset radar signal is detected by a detector of the preset radar signal, the preset radar signal is intercepted, when the preset radar signal sent by the preset radar is intercepted, the preset radar signal is subjected to a first delay modulation and a first phase modulation process to obtain a spoofing interference signal, when the preset radar signal sent by the preset radar is intercepted, a target type of the preset radar signal such as a pulse wave signal type may be first obtained, then according to the target type of the preset radar signal such as the pulse wave signal type, the preset radar signal of the target type is subjected to a delay modulation process (different target types, different false scene types, different delay modulation strategies are determined).
Specifically, a synthetic aperture radar SAR (preset radar) transmits a chirp signal (preset radar signal) to an jammer if the duration of the pulse is T r Let it be at T r At a certain time t r The frequency of the chirp signal is at carrier frequency f c Centered, with t r The rate of change is gamma, rect () is the rectangular envelope of the signal, j is the imaginary number, and the radar signal s is preset 0 (t r ) Can be expressed by the following formula:
jammer receives radar signal s 0 (t r ) Performing first delay modulation and first phase modulation processing to produceThe spoofed jamming signal is generated.
The step of performing first delay modulation and first phase modulation processing on the preset radar signal to obtain a spoofing interference signal includes:
step S11, when a preset radar signal sent by a preset radar is intercepted, determining a target distance between a real target point corresponding to the preset radar signal and a preset false target point;
step S12, determining the delay modulation time of the preset radar signal according to the target distance;
and step S13, carrying out delay and phase modulation processing on the preset radar signal according to the delay modulation time to obtain a deception jamming signal.
The embodiment is a specific way of obtaining a spoofing interference signal (spoofing interference signal), that is, after the jammer receives a chirp signal, firstly obtaining a target distance (may be multiple) between a real target point corresponding to a prestored chirp signal and a preset false target point, for example, the target distance may be 50 meters or 100 meters, after determining the target distance, determining a delay modulation time (may be named as a first delay modulation time) of the preset radar signal according to the target distance, specifically, if R is the target distance between the false target point and the real target point, assuming that the real target point is at an origin, and c is a light velocity in vacuum, then determining the target distance and the delay modulation time t d The relationship of (2) is expressed as follows:
t d ＝2R/c
after obtaining the delay modulation time, performing first delay modulation and first phase modulation processing on the preset radar signal according to the delay modulation time to obtain a deceptive jamming signal, namely a deceptive jamming signal s 1 (t r ) Can be expressed by the following formula:
t is the number of r -t d Refers to delay modulation, while exp (j 2 pi f) c (t r -t d )exp(jπr(t r -t d ) 2 ) Refers to phase modulation.
Step S20, performing one-bit quantization processing on the deception jamming signals based on a plurality of preset single-frequency time-varying thresholds to obtain mixed jamming signals;
after the deception jamming signal is obtained, performing one-bit quantization processing on the deception jamming signal based on a plurality of preset single-frequency time-varying thresholds to obtain a mixed jamming signal, wherein after the deception jamming signal is obtained, performing one-bit quantization processing on the deception jamming signal based on the plurality of preset single-frequency time-varying thresholds to obtain the mixed jamming signal, and the effect of the obtained mixed jamming signal is as follows: firstly, reducing the calculated amount in the interference signal generating process (because the existing signal is embodied in a binary form, the original signal after one bit quantization processing can keep the characteristics of the original signal), and secondly, forming multiple interference (specifically comprising the combination of single-frequency noise interference and deception interference), wherein when the preset radar signal sent by a preset radar is intercepted, the preset radar signal is subjected to first delay modulation and first phase modulation processing, and the step of obtaining the deception interference signal comprises the following steps:
step A1, when a preset radar signal sent by a preset radar is intercepted, performing one-bit quantization processing on the preset radar signal based on a plurality of preset single-frequency time-varying thresholds to obtain a single-frequency noise signal;
and step A2, performing first delay modulation and first phase modulation processing on the single-frequency noise signal to obtain a deception jamming signal.
In this embodiment, one bit quantization is performed twice in total, and one spoofing disturbance is performed once. Firstly, intercepting a radar transmitting signal by utilizing one-bit quantization (namely, performing one-bit quantization on the intercepted preset radar signal, wherein the one-bit quantization can be based on a plurality of preset single-frequency time-varying thresholds to obtain a single-frequency noise signal), performing first time delay modulation and first phase modulation processing on the single-frequency noise signal to generate a false target (obtaining a deceptive interference signal), and finally performing one-bit quantization on the deceptive interference signal (since the preset radar signal is already subjected to one-bit quantization based on the single-frequency time-varying thresholds, performing one-bit quantization based on the Gaussian time-varying thresholds is selected) and forwarding the deceptive interference signal to a radar receiver.
In this embodiment, multiple interference is implemented based on noise interference (single frequency) +spoofing interference+noise interference (gaussian), so as to improve interference efficiency.
It should be noted that, the preset multiple gaussian time-varying thresholds and the preset multiple single-frequency time-varying thresholds are different types of thresholds designed for a certain false scene or different false scenes (or false distances).
As shown in fig. 2, the step of performing a one-bit quantization process on the spoofing interference signal based on a preset plurality of single-frequency time-varying thresholds to obtain a mixed interference signal includes:
step S21, obtaining a target signal value of the deception jamming signal at any time, and selecting a preset target single-frequency time-varying threshold corresponding to any time from the preset multiple single-frequency time-varying thresholds;
step S22, comparing the target signal value with the preset target single-frequency time-varying threshold value to obtain a first bit quantized value;
step S23, obtaining other second bit quantized values corresponding to other moments and associated with the preset target single-frequency time-varying threshold, and obtaining a mixed interference signal according to the first bit quantized values and the other second bit quantized values.
In this embodiment, a target signal value of the spoofing interference signal at any time is obtained, a preset target single frequency time-varying threshold corresponding to any time is selected from the preset target single frequency time-varying thresholds, the target signal value is compared with the preset target single frequency time-varying threshold to obtain a first bit quantization value (if the target signal value is greater than the preset target single frequency time-varying threshold, the first bit quantization value may be 0, if the target signal value is less than 1), a plurality of other preset single frequency time-varying thresholds are obtained, if a s For single frequency signals, other preset single frequency time-varying threshold expressions are as follows:
wherein,,as the initial phase of the threshold, in the time interval of the repeated pulse signal, a fixed initial phase can be adopted to simplify the preset single-frequency time-varying threshold to the greatest extent, and it is to be noted that the preset plurality of single-frequency time-varying thresholds adopt random initial phases to reduce the coherence characteristic among different preset single-frequency time-varying thresholds, and the single-frequency time-varying thresholds are thresholds of a certain false scene or different false scenes which can be directly generated by a preset analog oscillator and aim at the deception interference signal, and the generated cost and complexity are far smaller than those of random time-varying thresholds which need to be calculated in advance, stored with high precision and reproduced by looking up in real time. The spoofing jamming signal quantization process based on a single frequency time varying threshold can be expressed as:
s 1 (t r )＝sign[s(t r )+h s (t r )]
sign () represents a sign function. It should be noted that, since the preset radar signal is usually in the form of complex data, the process of one-bit quantization (1-bit quantization) needs to be performed for the real part and the imaginary part of the spoofing interference signal, respectively. Let phi=2pi f c (t r -τ)+πγ(t r -τ) 2 ,The quantization process, i.e., the process of obtaining the mixed interference signal, can be expressed as:
s 1 (t r )＝sign(σcosφ+A s cosψ)+j sign(σsinφ+A s sinψ)
and step S30, the mixed interference signal is sent to a preset radar receiver.
After the mixed interference signal (as shown in fig. 4, the preset radar signal is not included) is obtained, the mixed interference signal is sent to the preset radar receiver.
In this embodiment, after the mixed interference signal is obtained, the mixed interference signal is sent to a receiver of a preset radar, and the receiver of the preset radar receives the preset radar signal and the mixed interference signal at the same time, so that it may be difficult to distinguish the real target to achieve the interference effect in this embodiment, as shown in fig. 5. It should be noted that, the preset radar signal and the mixed interference signal are simultaneously forwarded to the radar receiver, and the radar receiver performs imaging processing based on the preset radar signal and the mixed interference signal, and the result is shown in fig. 6, so as to achieve the interference effect in this embodiment.
When a preset radar signal sent by a preset radar is intercepted, performing first delay modulation and first phase modulation processing on the preset radar signal to obtain a deception jamming signal; performing one-bit quantization processing on the deception jamming signals based on a plurality of preset single-frequency time-varying thresholds to obtain mixed jamming signals; and sending the mixed interference signal to a preset radar receiver. In the application, when the preset radar signal sent by the preset radar is intercepted, the preset radar signal is subjected to first delay and phase modulation processing and one-bit quantization processing of a plurality of preset single-frequency time-varying thresholds in sequence, the preset radar signal is subjected to delay and phase modulation to generate deceptive interference, the deceptive-interfered preset radar signal is subjected to one-bit quantization based on the single-frequency time-varying thresholds to generate single-frequency noise interference, namely, two kinds of interference are generated simultaneously, the interference intensity is improved, and the preset radar signal is subjected to interference modulation based on the single-frequency time-varying threshold one-bit quantization technology, so that the calculation complexity and the operation time of an interference generation process are reduced, and the generation cost of interference signal generation is further reduced.
Further, based on the above embodiment, the present application provides another embodiment of a method for generating a single-frequency 1-bit mixed interference signal, in this embodiment, the step of performing a one-bit quantization process on the spoofed interference signal based on a preset plurality of single-frequency time-varying thresholds, to obtain the mixed interference signal includes:
step S40, carrying out matched filter processing on the mixed interference signal to obtain a processed signal;
step S50, determining whether the processing signal can be identified by a preset identification instrument;
step S60, if the processing signal is not recognized by the preset recognition instrument, performing a second delay modulation and a second phase modulation on the mixed interference signal.
In this embodiment, if the spoofed interference signal is subjected to one-bit quantization based on a preset plurality of single-frequency time-varying thresholds to obtain a mixed interference signal, the mixed interference signal (represented by binary) is subjected to matched filter processing of sign bits to obtain a processed signal, and specifically, the matched filter processing procedure is as follows: the matched filter can be divided into 1-bit sign bit and high-bit width data bit, the 1-bit sign bit of the matched filter and the sign bit of the mixed interference signal are subjected to exclusive nor (XNOR) logic operation, the high-bit width data bit of the matched filter is directly recombined with the sign bit after the XNOR operation, and then summation operation in subsequent matched filtering convolution operation is carried out, so that a processing signal is obtained. After the processing signal is obtained, determining whether the processing signal can be identified by a preset identification instrument, wherein the preset identification instrument is an instrument in single-frequency 1-bit mixed interference signal generating equipment. If the processing signal is not recognized by the preset recognition instrument, judging that the processing signal has no interference effect, and performing second delay modulation and second phase modulation processing (namely performing spoofing interference modulation again, wherein the second delay modulation and second phase modulation processing process is consistent with the first delay modulation and first phase modulation processing process) on the mixed interference signal.
In this embodiment, the processing signal is obtained by performing matched filter processing on the mixed interference signal; determining whether the processing signal can be identified by a preset identification instrument; and if the processing signal is not recognized by the preset recognition instrument, performing second delay modulation and second phase modulation processing on the mixed interference signal. In this embodiment, the generation of invalid interference signals is avoided.
Referring to fig. 3, fig. 3 is a schematic device structure diagram of a hardware running environment according to an embodiment of the present application.
The single-frequency 1-bit mixed interference signal generating device in the embodiment of the application can be a radar jammer and a PC, and can also be terminal devices such as a smart phone, a tablet computer, a portable computer and the like.
As shown in fig. 3, the single frequency 1-bit mixed interference signal generating apparatus may include: a processor 1001, such as a CPU, memory 1005, and a communication bus 1002. Wherein a communication bus 1002 is used to enable connected communication between the processor 1001 and a memory 1005. The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
Optionally, the single Frequency 1-bit mixed interference signal generating device may further include a target user interface, a network interface, a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. The target user interface may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the selectable target user interface may also include a standard wired interface, a wireless interface. The network interface may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface).
It will be appreciated by those skilled in the art that the single frequency 1 bit mixed jamming signal generating device structure shown in fig. 3 is not limiting of the single frequency 1 bit mixed jamming signal generating device, and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 3, an operating system, a network communication module, and a single frequency 1-bit mixed interference signal generation program may be included in a memory 1005 as one type of computer storage medium. The operating system is a program that manages and controls the hardware and software resources of the single frequency 1 bit mixed jamming signal generating device, supporting the single frequency 1 bit mixed jamming signal generating program and the operation of other software and/or programs. The network communication module is used for realizing communication among components in the memory 1005 and communication with other hardware and software in the single-frequency 1-bit mixed interference signal generating device.
In the single frequency 1 bit mixed interference signal generating device shown in fig. 3, the processor 1001 is configured to execute a single frequency 1 bit mixed interference signal generating program stored in the memory 1005, to implement the steps of the single frequency 1 bit mixed interference signal generating method described in any one of the above.
The specific implementation manner of the single-frequency 1-bit mixed interference signal generating device is basically the same as the embodiments of the single-frequency 1-bit mixed interference signal generating method, and is not repeated here.
In addition, the embodiment of the application also provides a single-frequency 1-bit mixed interference signal generating device, which comprises:
the system comprises an interception module, a first phase modulation module and a second phase modulation module, wherein the interception module is used for carrying out first delay modulation and first phase modulation processing on a preset radar signal sent by a preset radar when intercepting the preset radar signal to obtain a deception jamming signal;
the quantization module is used for carrying out one-bit quantization processing on the deception jamming signals based on a plurality of preset single-frequency time-varying thresholds to obtain mixed jamming signals;
and the sending module is used for sending the mixed interference signal to a preset radar receiver.
Optionally, the single frequency 1 bit mixed interference signal generating device includes:
the first acquisition module is used for acquiring a target signal value of the deception jamming signal at any time and selecting a preset target single-frequency time-varying threshold corresponding to any time from the preset multiple single-frequency time-varying thresholds;
the comparison module is used for comparing the target signal value with the preset target single-frequency time-varying threshold value to obtain a first bit quantized value;
the second acquisition module is used for acquiring other second bit quantized values corresponding to other moments and associated with the preset target single-frequency time-varying threshold value, and acquiring a mixed interference signal according to the first bit quantized values and the other second bit quantized values.
Optionally, the preset multiple single-frequency time-varying thresholds adopt random initial phases.
Optionally, the single frequency 1 bit mixed interference signal generating device includes:
the processing module is used for carrying out matched filter processing on the data bits and the sign bits of the mixed interference signal to obtain a processed signal;
the determining module is used for determining whether the processing signal can be identified by a preset identification instrument or not;
and the modulation processing module is used for carrying out second delay modulation and second phase modulation processing on the mixed interference signal if the processing signal is not recognized by a preset recognition instrument.
Optionally, the intercepting module includes:
the first interception unit is used for determining the target distance between a real target point corresponding to the preset radar signal and a preset false target point when intercepting the preset radar signal sent by the preset radar;
the determining unit is used for determining the delay modulation time of the preset radar signal according to the target distance;
and the first modulation processing unit is used for carrying out first delay modulation and first phase modulation processing on the preset radar signal according to the delay modulation time to obtain a deception jamming signal.
Optionally, the intercepting module includes:
the second interception unit is used for performing one-bit quantization processing on the preset radar signal based on a plurality of preset single-frequency time-varying thresholds when intercepting the preset radar signal sent by the preset radar, so as to obtain a single-frequency noise signal;
and the second modulation processing unit is used for carrying out first delay modulation and first phase modulation processing on the single-frequency noise signal to obtain a deception jamming signal.
The specific implementation manner of the single-frequency 1-bit mixed interference signal generating device is basically the same as each embodiment of the single-frequency 1-bit mixed interference signal generating method, and is not repeated here.
In addition, the application also provides a medium, wherein the medium stores one or more programs, and the one or more programs can be further executed by one or more processors to realize the steps of the single-frequency 1-bit mixed interference signal generating method.
The expansion content of the specific implementation modes of the device and the medium (i.e. the medium) of the application is basically the same as that of each embodiment of the single-frequency 1-bit mixed interference signal generation method, and is not repeated here.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (9)
1. The single-frequency 1-bit mixed interference signal generation method is characterized by comprising the following steps of:
when a preset radar signal sent by a preset radar is intercepted, performing first delay modulation and first phase modulation processing on the preset radar signal to obtain a deception jamming signal;
acquiring a target signal value of the deception jamming signal at any time, and selecting a preset target single-frequency time-varying threshold corresponding to any time from the preset multiple single-frequency time-varying thresholds;
comparing the target signal value with the preset target single-frequency time-varying threshold value to obtain a first bit quantized value;
acquiring other second bit quantized values corresponding to other moments and associated with the preset target single-frequency time-varying threshold, and acquiring a mixed interference signal according to the first bit quantized values and the other second bit quantized values;
and sending the mixed interference signal to a preset radar receiver.
2. The method for generating a single-frequency 1-bit mixed interference signal according to claim 1, wherein the preset plurality of single-frequency time-varying thresholds use a random initial phase.
3. The method for generating a single-frequency 1-bit mixed interference signal according to claim 1, wherein the step of performing a one-bit quantization process on the spoofed interference signal based on a preset plurality of single-frequency time-varying thresholds to obtain the mixed interference signal comprises:
carrying out matched filter processing on the mixed interference signal to obtain a processed signal;
determining whether the processing signal can be identified by a preset identification instrument;
and if the processing signal is not recognized by the preset recognition instrument, performing second delay modulation and second phase modulation processing on the mixed interference signal.
4. A method for generating a single-frequency 1-bit mixed interference signal according to any one of claims 1-3, wherein when a preset radar signal sent by a preset radar is intercepted, performing a first delay modulation and a first phase modulation on the preset radar signal to obtain a spoofed interference signal, which includes:
when a preset radar signal sent by a preset radar is intercepted, determining a target distance between a real target point corresponding to the preset radar signal and a preset false target point;
determining the delay modulation time of the preset radar signal according to the target distance;
and carrying out first delay modulation and first phase modulation processing on the preset radar signal according to the delay modulation time to obtain a deceptive jamming signal.
5. The method for generating a single-frequency 1-bit mixed interference signal according to claim 1, wherein when a preset radar signal transmitted by a preset radar is intercepted, performing a first delay modulation and a first phase modulation process on the preset radar signal to obtain a spoofed interference signal comprises:
when a preset radar signal sent by a preset radar is intercepted, performing one-bit quantization processing on the preset radar signal based on a plurality of preset single-frequency time-varying thresholds to obtain a single-frequency noise signal;
and performing first delay modulation and first phase modulation processing on the single-frequency noise signal to obtain a deception jamming signal.
6. A single frequency 1-bit mixed interference signal generating apparatus, characterized in that the single frequency 1-bit mixed interference signal generating apparatus comprises:
the system comprises an interception module, a first phase modulation module and a second phase modulation module, wherein the interception module is used for carrying out first delay modulation and first phase modulation processing on a preset radar signal sent by a preset radar when intercepting the preset radar signal to obtain a deception jamming signal;
the quantization module is used for acquiring a target signal value of the deception jamming signal at any time and selecting a preset target single-frequency time-varying threshold corresponding to any time from the preset multiple single-frequency time-varying thresholds; comparing the target signal value with the preset target single-frequency time-varying threshold value to obtain a first bit quantized value; acquiring other second bit quantized values corresponding to other moments and associated with the preset target single-frequency time-varying threshold, and acquiring a mixed interference signal according to the first bit quantized values and the other second bit quantized values;
and the sending module is used for sending the mixed interference signal to a preset radar receiver.
7. The single-frequency 1-bit mixed interference signal generating apparatus according to claim 6, wherein the single-frequency 1-bit mixed interference signal generating apparatus comprises:
the first acquisition module is used for acquiring a target signal value of the deception jamming signal at any time and selecting a preset target single-frequency time-varying threshold corresponding to any time from the preset multiple single-frequency time-varying thresholds;
the comparison module is used for comparing the target signal value with the preset target single-frequency time-varying threshold value to obtain a first bit quantized value;
the second acquisition module is used for acquiring other second bit quantized values corresponding to other moments and associated with the preset target single-frequency time-varying threshold value, and acquiring a mixed interference signal according to the first bit quantized values and the other second bit quantized values.
8. A single frequency 1-bit mixed interference signal generating apparatus, the apparatus comprising: memory, a processor and a single frequency 1 bit mixed jamming signal generating program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the single frequency 1 bit mixed jamming signal generating method according to any of claims 1 to 5.
9. A medium, wherein a single frequency 1 bit mixed interference signal generating program is stored on the medium, and the single frequency 1 bit mixed interference signal generating program, when executed by a processor, implements the steps of the single frequency 1 bit mixed interference signal generating method according to any one of claims 1 to 5.
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