CN111077505B - Single-frequency 1-bit mixed interference signal generation method, device, equipment and medium - Google Patents

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

Single-frequency 1-bit mixed interference signal generation method, device, equipment and medium

technical field

The present invention relates to the field of signal technology, in particular to a method, device, equipment and medium for generating a single-frequency 1-bit mixed interference signal.

Background technique

At present, it is often necessary to generate realistic false targets or jamming signals (spoofing jamming targets) for SAR (synthetic aperture radar), thereby disrupting the acquisition and decision-making of real signals by synthetic aperture radar. However, there are computational complexity in the existing jamming signal generation process , The calculation time is too long, the interference of the interference signal is poor and other technical problems that affect the generation cost of the interference signal.

Contents of the invention

The main purpose of the present invention is to provide a single-frequency 1-bit mixed interference signal generation method, device, equipment and medium, aiming to solve the problems of complex calculation, long calculation time, and poor interference of interference signals in the existing interference signal generation process. Technical issues affecting the cost of generating jamming signals.

In order to achieve the above purpose, an embodiment of the present invention provides a method for generating a single-frequency 1-bit mixed interference signal. The method for generating a single-frequency 1-bit mixed interference signal includes:

When the preset radar signal sent by the preset radar is intercepted, performing first delay and first phase modulation processing on the preset radar signal to obtain a spoofing interference signal;

Performing one-bit quantization processing based on multiple preset single-frequency time-varying thresholds on the spoofing interference signal to obtain a mixed interference signal;

Send the mixed interference signal to a preset radar receiver.

Optionally, the step of performing one-bit quantization processing on the spoofing interference signal based on preset multiple single-frequency time-varying thresholds to obtain a mixed interference signal includes:

Acquiring the target signal value of the spoofing interference signal at any moment, and selecting the preset target single-frequency time-varying threshold corresponding to the any moment from the preset multiple single-frequency time-varying thresholds;

Comparing the target signal value with the preset target single-frequency time-varying threshold to obtain a first bit quantization value;

Acquiring other second bit quantization values associated with the preset target single-frequency time-varying threshold corresponding to other moments, and obtaining a mixed interference signal according to the first bit quantization value and the other second bit quantization values.

Optionally, the preset multiple single-frequency time-varying thresholds adopt a random initial phase.

Optionally, after performing one-bit quantization processing on the spoofed interference signal based on preset multiple single-frequency time-varying thresholds, the step of obtaining the mixed interference signal includes:

performing matched filter processing on the mixed interference signal to obtain a processed signal;

determining whether the processed signal can be recognized by a preset recognition instrument;

If the processed signal is not identified by a preset identification device, 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, the step of performing first delay modulation and first phase modulation processing on the preset radar signal to obtain a spoofing interference signal includes:

When the preset radar signal sent by the preset radar is intercepted, the target distance between the real target point corresponding to the preset radar signal and the preset false target point is determined;

determining the delay modulation time of the preset radar signal according to the target distance;

According to the delay modulation time, a first delay modulation and a first phase modulation are performed on the preset radar signal to obtain a spoofing interference signal.

Optionally, when the preset radar signal sent by the preset radar is intercepted, the step of performing first delay modulation and first phase modulation processing on the preset radar signal to obtain the spoofing interference signal includes:

When the preset radar signal sent by the preset radar is intercepted, the preset radar signal is subjected to one-bit quantization processing based on a plurality of preset single-frequency time-varying thresholds to obtain a single-frequency noise signal;

Performing first delay modulation and first phase modulation processing on the single-frequency noise signal to obtain a spoofing interference signal.

The present invention also provides a single-frequency 1-bit mixed interference signal generation device, and the single-frequency 1-bit mixed interference signal generation device includes:

The interception module is configured to perform first delay modulation and first phase modulation processing on the preset radar signal when the preset radar signal sent by the preset radar is intercepted, to obtain a spoofing interference signal;

A quantization module, configured to perform one-bit quantization processing based on preset multiple single-frequency time-varying thresholds on the spoofing interference signal to obtain a mixed interference signal;

A sending module, configured to send the mixed interference signal to a preset radar receiver.

Optionally, the device for generating a single-frequency 1-bit mixed interference signal includes:

The first acquisition module is configured to acquire the target signal value of the spoofing interference signal at any moment, and select the preset target single-frequency time-varying threshold corresponding to any moment from the preset multiple single-frequency time-varying thresholds threshold;

A comparison module, configured to compare the target signal value with the preset target single-frequency time-varying threshold to obtain a first bit quantization value;

The second acquisition module is configured to acquire other second bit quantization values associated with the preset target single-frequency time-varying threshold corresponding to other moments, and according to the first bit quantization value and the other second bit quantization values, A mixed interference signal is obtained.

Optionally, the preset multiple single-frequency time-varying thresholds adopt a random initial phase.

Optionally, the device for generating a single-frequency 1-bit mixed interference signal includes:

A processing module, configured to perform matched filter processing of data bits and sign bits on the mixed interference signal to obtain a processed signal;

A determining module, configured to determine whether the processed signal can be recognized by a preset recognition instrument;

The modulation processing module is configured to perform second delay modulation and second phase modulation processing on the mixed interference signal if the processed signal is not identified by a preset identification instrument.

Optionally, the interception module includes:

The first intercepting unit is configured to determine the target distance between the real target point corresponding to the preset radar signal and the preset false target point when the preset radar signal sent by the preset radar is intercepted;

a determining unit, configured to determine the delay modulation time of the preset radar signal according to the target distance;

The first modulation processing unit is configured to perform first delay modulation and first phase modulation processing on the preset radar signal according to the delay modulation time to obtain a spoofing interference signal.

Optionally, the interception module includes:

The second intercepting unit is configured to perform 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 when the preset radar signal sent by the preset radar is intercepted. ;

The second modulation processing unit is configured to perform second delay modulation and second phase modulation processing on the single-frequency noise signal to obtain a spoofing interference signal.

The present invention also provides a medium, on which a single-frequency 1-bit mixed interference signal generation program is stored, and when the single-frequency 1-bit mixed interference signal generation program is executed by a processor, the above-mentioned single-frequency 1-bit mixed interference signal is realized The steps of the signal generation method.

In the present invention, 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 to obtain a deceptive interference signal; A one-bit quantization process of multiple single-frequency time-varying thresholds is set to obtain a mixed interference signal; and the mixed interference signal is sent to a preset radar receiver. In this application, when the preset radar signal sent by the preset radar is intercepted, the first delay modulation and the first phase modulation processing and the preset multiple single-frequency time-varying thresholds are sequentially performed on the preset radar signal. One-bit quantization processing, while delaying and phase-modulating the preset radar signal to generate spoofing interference, performing one-bit quantization based on a single-frequency time-varying threshold to the preset radar signal after spoofing interference, generating single-frequency noise interference, that is , two kinds of interference are generated at the same time, which improves the interference intensity, and because the interference modulation is performed on the preset radar signal based on the single-frequency time-varying threshold one-bit quantization technology, the calculation complexity and operation time of the interference generation process are reduced, and the interference reduction is realized. The generation cost of signal generation.

Description of drawings

FIG. 1 is a schematic flow diagram of a first embodiment of a method for generating a single-frequency 1-bit mixed interference signal according to the present invention;

Fig. 2 is a refinement of the step of obtaining a mixed interference signal by performing one-bit quantization processing on the spoofed interference signal based on multiple preset single-frequency time-varying thresholds in the second embodiment of the method for generating a single-frequency 1-bit mixed interference signal of the present invention Schematic diagram of the process;

3 is a schematic diagram of the device structure of the hardware operating environment involved in the method of the embodiment of the present invention;

FIG. 4 is a schematic diagram of a first scenario involved in a method for generating a single-frequency 1-bit mixed interference signal according to the present invention.

FIG. 5 is a schematic diagram of a second scenario involved in the method for generating a single-frequency 1-bit mixed interference signal according to the present invention.

FIG. 6 is a schematic diagram of a third scenario involved in the method for generating a single-frequency 1-bit mixed interference signal according to the present invention.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The present invention provides a method for generating a single-frequency 1-bit mixed interference signal. In an embodiment of the method for generating a single-frequency 1-bit mixed interference signal, referring to FIG. 1 , the method for generating a single-frequency 1-bit mixed interference signal includes:

Step S10, when the preset radar signal sent by the preset radar is intercepted, performing first delay modulation and first phase modulation processing on the preset radar signal to obtain a spoofing interference signal;

Step S20, performing one-bit quantization processing based on multiple preset single-frequency time-varying thresholds on the spoofing interference signal to obtain a mixed interference signal;

Step S30, sending the mixed interference signal to a preset radar receiver.

Specific steps are as follows:

Step S10, when the preset radar signal sent by the preset radar is intercepted, the first delay and phase modulation processing are performed on the preset radar signal to obtain a spoofing interference signal;

It should be noted that, in this embodiment, the method for generating a single-frequency 1-bit mixed jamming signal is applied to a jammer such as a radar jammer or a mixed jamming signal system, and the jammer or mixed jamming signal system belongs to the single-frequency 1-bit mixed jamming system. For the signal generation device, since the preset radar signal can be a pulse wave signal and a continuous wave signal, the mixed interference signal can also be a pulse wave signal or a continuous wave signal (consistent with the preset radar signal). In the example, when the preset radar signal is detected by the detector of the preset radar signal, the preset radar signal is intercepted, and when the preset radar signal sent by the preset radar is intercepted, the preset radar signal is subjected to a second One delay modulation and the first phase modulation process to obtain the spoofing interference signal, when the preset radar signal sent by the preset radar is intercepted, the target type of the preset radar signal, such as the pulse wave signal type, can be obtained first, and then according to the The target type of the preset radar signal is such as the pulse wave signal type, and then the delay modulation processing is performed on the preset radar signal of the target type (the target type is different, the false scene is different, different delay modulation processing strategies are determined), and the obtained Spoof jamming signal.

Specifically, Synthetic Aperture Radar SAR (preset radar) transmits a chirp pulse signal (preset radar signal) to the jammer. If the duration of the pulse is T _r , assuming that a certain moment in T _r is t _r , the linear The frequency of the FM pulse signal is centered on the carrier frequency f _c , increases with the increase of t _r , and its rate of change is γ, rect() is the rectangular envelope of the signal, and j is an imaginary number, then the preset radar signal s ₀ ( t _r ) can be expressed by the following formula:

The jammer performs first delay modulation and first phase modulation processing on the received radar signal s ₀ (t _r ) to generate a spoofing jamming signal, which is a spoofing jamming signal.

Wherein, the step of performing the first delay modulation and the first phase modulation processing on the preset radar signal to obtain the spoofing interference signal includes:

Step S11, when the preset radar signal sent by the preset radar is intercepted, determine the target distance between the real target point corresponding to the preset radar signal and the preset false target point;

Step S12, determining the delay modulation time of the preset radar signal according to the target distance;

Step S13, performing delay and phase modulation processing on the preset radar signal according to the delay modulation time to obtain a spoofing interference signal.

This embodiment is the specific way to obtain the spoofing interference signal (spoofing interference signal). That is, after the jammer receives the chirp signal, it first obtains the difference between the real target point corresponding to the prestored chirp signal and the preset false target point. The target distance between (can be multiple), as this target distance can be 50 meters or 100 meters etc., after determining the target distance, according to the target distance, determine the delay modulation time of the preset radar signal (can be Named as the first delay modulation time), 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 the origin, c is the speed of light in vacuum, then the target distance and delay modulation The relationship of time t _d is expressed as follows:

t _d =2R/c

After the delay modulation time is obtained, according to the delay modulation time, the first delay modulation and the first phase modulation processing are performed on the preset radar signal to obtain a deceptive interference signal, that is, a deceptive interference signal s ₁ (t _r ) can be expressed by the following formula:

It should be noted that t _r -t _d refers to delay modulation, and exp(j2πf _c (t _r -t _d )exp(jπr(t _r -t _d ) ² ) refers to phase modulation.

Step S20, performing one-bit quantization processing based on multiple preset single-frequency time-varying thresholds on the spoofing interference signal to obtain a mixed interference signal;

After obtaining the spoofing interference signal, performing one-bit quantization processing on the spoofing interference signal based on multiple preset single-frequency time-varying thresholds to obtain a mixed interference signal, wherein, after obtaining the spoofing interference signal, performing a one-bit quantization process on the spoofing interference signal Performing one-bit quantization processing based on preset multiple single-frequency time-varying thresholds to obtain a mixed interference signal has the following functions: first, to reduce the amount of calculation in the generation of the interference signal (since the existing signal is embodied in binary form, one The original signal after the bit quantization process can retain the characteristics of the original signal), and the second is to form multiple interferences (specifically including the combination of single-frequency noise interference and deception interference), wherein the preset radar signal sent by the preset radar is intercepted , the first delay modulation and first phase modulation processing are performed on the preset radar signal, and the step of obtaining the spoofing interference signal includes:

Step A1, when the preset radar signal sent by the preset radar is intercepted, the preset radar signal is subjected to one-bit quantization processing based on preset multiple single-frequency time-varying thresholds to obtain a single-frequency noise signal;

Step A2, performing first delay modulation and first phase modulation processing on the single-frequency noise signal to obtain a spoofing interference signal.

In this embodiment, a total of two one-bit quantizations and one spoofing interference are performed. First, one-bit quantization is used to intercept the radar transmission signal (that is, one-bit quantization is performed on the intercepted preset radar signal, and the one-bit quantization here can be based on preset multiple single-frequency time-varying thresholds to obtain a single-frequency noise signal ), the first delay modulation and the first phase modulation are performed on the single-frequency noise signal to generate a false target (to obtain a deceptive jamming signal), and finally the deceptive jamming signal is quantized by one bit (since the preset radar signal has been based on One-bit quantization is performed on the single-frequency time-varying threshold, and one-bit quantization based on the Gaussian time-varying threshold is selected here) and forwarded to the radar receiver.

In this embodiment, based on noise interference (single frequency)+spoofing interference+noise interference (Gaussian), multiple interferences are implemented 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 pre-stored thresholds designed for a certain false scene or different false scenes (or false distances).

As shown in FIG. 2, the step of performing one-bit quantization processing based on preset multiple single-frequency time-varying thresholds on the spoofing interference signal to obtain a mixed interference signal includes:

Step S21, acquiring the target signal value of the spoofing interference signal at any moment, and selecting the preset target single-frequency time-varying threshold corresponding to the any moment 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 to obtain a first bit quantization value;

Step S23, obtaining other second bit quantization values associated with the preset target single-frequency time-varying threshold at other times, and obtaining a mixed interference signal according to the first bit quantization value and the other second bit quantization values .

In this embodiment, the target signal value of the spoofing interference signal at any moment is obtained, and the preset target single-frequency time-varying threshold corresponding to the any moment is selected from the preset multiple target single-frequency time-varying thresholds. Threshold, comparing the target signal value 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 can be is 0, if it is less than, it can be 1), and multiple other preset single-frequency time-varying thresholds are obtained. If A _s is a single-frequency signal, the expression of other preset single-frequency time-varying thresholds is:

in, is the initial phase of the threshold, and within the time interval of the repetitive pulse signal, a fixed initial phase can be used to simplify the preset single-frequency time-varying threshold to the greatest extent. It should be noted that the preset multiple single-frequency time-varying thresholds adopt random In the initial phase, to reduce the coherence between different preset single-frequency time-varying thresholds, the single-frequency time-varying threshold is a threshold that can be directly generated by a preset analog oscillator for a certain false scene or different false scenes of spoofing interference signals , the cost and complexity of which are far less than the random time-varying threshold that requires pre-computation, high-precision storage, and real-time look-up table reproduction. Then the quantification process of spoofing jamming signal based on 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) also needs to be performed on the real part and the imaginary part of the spoofing interference signal respectively. Let φ＝2πf _c (t _r -τ)+πγ(t _r -τ) ² , Then the quantization process is the process of obtaining the mixed interference signal, which can be expressed as:

s ₁ (t _r )＝sign(σcosφ+A _s cosψ)+j sign(σsinφ+A _s sinψ)

Step S30, sending the mixed interference signal to a preset radar receiver.

After obtaining the mixed interference signal (as shown in FIG. 4 , which does not include the preset radar signal), 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 the receiver of the preset radar, and the receiver of the preset radar will receive the preset radar signal and the mixed interference signal at the same time. It is difficult to distinguish real targets to achieve the jamming effect in this embodiment, as shown in FIG. 5 . It should be noted that the preset radar signal and the mixed interference signal are forwarded to the radar receiver at the same time, and the radar receiver will perform imaging processing based on the preset radar signal and the mixed interference signal. interference effect.

In the present invention, 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 to obtain a deceptive interference signal; A one-bit quantization process of multiple single-frequency time-varying thresholds is set to obtain a mixed interference signal; and the mixed interference signal is sent to a preset radar receiver. In this application, when the preset radar signal sent by the preset radar is intercepted, the first delay and phase modulation processing and the one-bit quantization of preset multiple single-frequency time-varying thresholds are performed successively on the preset radar signal processing, and the preset radar signal is delayed and phase-modulated to generate spoofing interference, and the preset radar signal after spoofing interference is subjected to one-bit quantization based on a single-frequency time-varying threshold to generate single-frequency noise interference, that is, simultaneously The two types of interference increase the interference intensity, and because the interference modulation is performed on the preset radar signal based on the single-frequency time-varying threshold one-bit quantization technology, the computational complexity and operation time of the interference generation process are reduced, and the generation of interference signals is reduced. Generation costs.

Further, based on the above-mentioned embodiments, the present invention provides another embodiment of a method for generating a single-frequency 1-bit mixed interference signal. In this embodiment, the spoofing interference signal is performed based on preset multiple single-frequency time-varying thresholds. The one-bit quantization processing of is obtained after the mixed interference signal step includes:

Step S40, performing matched filter processing on the mixed interference signal to obtain a processed signal;

Step S50, determining whether the processed signal can be recognized by a preset recognition instrument;

Step S60, if the processed signal is not recognized by a preset recognition instrument, perform second delay modulation and second phase modulation processing on the mixed interference signal.

In this embodiment, if the spoofed interference signal is subjected to one-bit quantization processing based on multiple preset single-frequency time-varying thresholds to obtain a mixed interference signal, then the mixed interference signal (expressed in binary) is signed Bit matched filter processing to obtain the processed signal, specifically, the matched filter processing process is: 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 mixed The sign bit of the interference signal is subjected to an XNOR logic operation, and the high-bit width data bit of the matched filter is directly recombined with the sign bit after the XNOR operation, and then the summation operation in the subsequent matched filter convolution operation is performed to obtain Handle signals. After obtaining the processed signal, it is determined whether the processed signal can be identified by a preset identification device, wherein the preset identification device is an instrument in the single-frequency 1-bit mixed interference signal generation device. If the processed signal is not recognized by the preset identification instrument, it is determined that the processed signal has no interference effect, and at this time, the mixed interference signal is subjected to second delay modulation and second phase modulation processing (i.e., performing a second delay modulation process) Deception interference modulation, second delay modulation and second phase modulation processing are consistent with the first delay modulation and first phase modulation processing).

In this embodiment, a processed signal is obtained by performing matched filter processing on the mixed interference signal; it is determined whether the processed signal can be recognized by a preset recognition device; if the processed signal is not recognized by a preset recognition device, performing second delay modulation and second phase modulation processing on the mixed interference signal. In this embodiment, generation of invalid interference signals is avoided.

Referring to FIG. 3 , FIG. 3 is a schematic diagram of the device structure of the hardware operating environment involved in the solution of the embodiment of the present invention.

The device for generating a single-frequency 1-bit mixed interference signal in the embodiment of the present invention may be a radar jammer, a PC, or a terminal device such as a smart phone, a tablet computer, or a portable computer.

As shown in FIG. 3 , the device for generating a single-frequency 1-bit mixed interference signal may include: a processor 1001 , such as a CPU, a memory 1005 , and a communication bus 1002 . Wherein, the communication bus 1002 is used to realize connection and communication between the processor 1001 and the memory 1005 . The memory 1005 can be a high-speed RAM memory, or a non-volatile memory, such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001 .

Optionally, the device for generating a single-frequency 1-bit mixed interference signal may also include a target user interface, a network interface, a camera, an RF (Radio Frequency, 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 optional target user interface may also include a standard wired interface and a wireless interface. Optionally, the network interface may include a standard wired interface and a wireless interface (such as a WI-FI interface).

Those skilled in the art can understand that the structure of the single-frequency 1-bit mixed interference signal generation device shown in Figure 3 does not constitute a limitation on the single-frequency 1-bit mixed interference signal generation device, and may include more or less components, or combinations of certain components, or different arrangements of components.

As shown in FIG. 3 , the memory 1005 as a computer storage medium may include an operating system, a network communication module, and a single-frequency 1-bit mixed interference signal generating program. The operating system is a program that manages and controls the hardware and software resources of the single-frequency 1-bit mixed interference signal generating device, and supports the operation of the single-frequency 1-bit mixed interference signal generation program and other software and/or programs. The network communication module is used to realize the communication among the various components inside the memory 1005, and communicate with other hardware and software in the single-frequency 1-bit mixed interference signal generation device.

In the single-frequency 1-bit mixed interference signal generation device shown in Figure 3, the processor 1001 is used to execute the single-frequency 1-bit mixed interference signal generation program stored in the memory 1005 to realize the single-frequency 1-bit described in any one of the above Steps of the hybrid interference signal generation method.

The specific implementation manners of the device for generating a single-frequency 1-bit mixed interference signal of the present invention are basically the same as the embodiments of the above-mentioned method for generating a single-frequency 1-bit mixed interference signal, and will not be repeated here.

In addition, the embodiment of the present invention also proposes a single-frequency 1-bit mixed interference signal generation device, and the single-frequency 1-bit mixed interference signal generation device includes:

The interception module is configured to perform first delay modulation and first phase modulation processing on the preset radar signal when the preset radar signal sent by the preset radar is intercepted, to obtain a spoofing interference signal;

A quantization module, configured to perform one-bit quantization processing based on preset multiple single-frequency time-varying thresholds on the spoofing interference signal to obtain a mixed interference signal;

A sending module, configured to send the mixed interference signal to a preset radar receiver.

Optionally, the device for generating a single-frequency 1-bit mixed interference signal includes:

The first acquisition module is configured to acquire the target signal value of the spoofing interference signal at any moment, and select the preset target single-frequency time-varying threshold corresponding to any moment from the preset multiple single-frequency time-varying thresholds threshold;

A comparison module, configured to compare the target signal value with the preset target single-frequency time-varying threshold to obtain a first bit quantization value;

The second acquisition module is configured to acquire other second bit quantization values associated with the preset target single-frequency time-varying threshold corresponding to other moments, and according to the first bit quantization value and the other second bit quantization values, A mixed interference signal is obtained.

Optionally, the preset multiple single-frequency time-varying thresholds adopt a random initial phase.

Optionally, the device for generating a single-frequency 1-bit mixed interference signal includes:

A processing module, configured to perform matched filter processing of data bits and sign bits on the mixed interference signal to obtain a processed signal;

A determining module, configured to determine whether the processed signal can be recognized by a preset recognition instrument;

The modulation processing module is configured to perform second delay modulation and second phase modulation processing on the mixed interference signal if the processed signal is not identified by a preset identification instrument.

Optionally, the interception module includes:

The first intercepting unit is configured to determine the target distance between the real target point corresponding to the preset radar signal and the preset false target point when the preset radar signal sent by the preset radar is intercepted;

a determining unit, configured to determine the delay modulation time of the preset radar signal according to the target distance;

The first modulation processing unit is configured to perform first delay modulation and first phase modulation processing on the preset radar signal according to the delay modulation time to obtain a spoofing interference signal.

Optionally, the interception module includes:

The second intercepting unit is configured to perform 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 when the preset radar signal sent by the preset radar is intercepted. ;

The second modulation processing unit is configured to perform first delay modulation and first phase modulation processing on the single-frequency noise signal to obtain a spoofing interference signal.

The specific implementation manner of the device for generating a single-frequency 1-bit mixed interference signal is basically the same as the embodiments of the above-mentioned method for generating a single-frequency 1-bit mixed interference signal, and will not be repeated here.

In addition, the present invention also provides a medium, the medium stores one or more programs, and the one or more programs can also be executed by one or more processors to realize the above-mentioned single-frequency 1-bit mixing Steps in various embodiments of the method for generating an interference signal.

The expanded content of the specific implementation of the device and medium (ie, medium) of the present invention is basically the same as the embodiments of the method for generating a single-frequency 1-bit mixed interference signal, and will not be repeated here.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in various embodiments of the present invention.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive, and those of ordinary skill in the art will Under the enlightenment of the present invention, many forms can also be made without departing from the gist of the present invention and the protection scope of the claims, and these all belong to the protection of the present invention.

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.