CN110531345B - Deception jamming method and system for gunshot positioning device and terminal equipment - Google Patents
Deception jamming method and system for gunshot positioning device and terminal equipment Download PDFInfo
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- CN110531345B CN110531345B CN201910731250.5A CN201910731250A CN110531345B CN 110531345 B CN110531345 B CN 110531345B CN 201910731250 A CN201910731250 A CN 201910731250A CN 110531345 B CN110531345 B CN 110531345B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/66—Sonar tracking systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/537—Counter-measures or counter-counter-measures, e.g. jamming, anti-jamming
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The invention is suitable for the technical field of electronic countermeasure, and provides a deception jamming method, a system and terminal equipment for a gunshot positioning device, wherein the method comprises the following steps: the method comprises the steps of collecting environmental noise in real time, converting the environmental noise into an electric signal, extracting a characteristic value of the electric signal, outputting a simulated gunshot when the similarity between the characteristic value of the electric signal and a preset gunshot characteristic value reaches a preset threshold value, so that a real gunshot is submerged in the simulated gunshot, and a gunshot positioning device cannot detect the gunshot or detect a plurality of false gunshot positions, thereby improving the detection difficulty of the gunshot positioning device on the sniping gunshot, and being beneficial to protecting snipers from being detected and identified easily.
Description
Technical Field
The invention belongs to the technical field of electronic countermeasure, and particularly relates to a deception jamming method and system for a gunshot positioning device and terminal equipment.
Background
The sniper plays an increasingly important role in modern war due to its ability to strike precisely and make one gun. The sniper has not a small amount of fighting power, mainly benefiting from its excellent camouflage hiding power, and in recent years various countries have continuously explored anti-sniping technology to detect enemy snipers earlier and faster on the battlefield.
The prior anti-sniping technology mainly comprises three modes of gun sound, infrared and laser detection, wherein a gun sound positioning device is used for positioning a sniper by detecting rifling waves generated by gunpowder explosion at a gun mouth through a microphone array, and the traditional camouflage mode cannot effectively conceal and shield the sniper of the own party because the gun sound positioning device is widely researched and applied by passively and comprehensively detecting the gun sound.
Disclosure of Invention
In view of this, embodiments of the present invention provide a deception jamming method, a system, and a terminal device for a gunshot positioning device, so as to solve the problems that a traditional camouflage manner in the prior art cannot effectively conceal and shield a sniper of an own party, and is easy to expose the sniper of the own party.
A first aspect of an embodiment of the present invention provides a deception jamming method for a gunshot positioning device, including:
collecting environmental noise in real time, and converting the environmental noise into an electric signal;
extracting a characteristic value of the electric signal;
and when the similarity between the characteristic value of the electric signal and the preset gun sound characteristic value reaches a preset threshold value, outputting a simulated gun sound, wherein the simulated gun sound is a simulated gun sound with the sound level and the frequency spectrum consistent with the real gun sound.
In one embodiment, the extracting the characteristic value of the electrical signal includes:
and extracting the time domain characteristic parameters and the frequency domain characteristic parameters of the electric signals.
In an embodiment, before the extracting the time domain characteristic parameters and the frequency domain characteristic parameters of the electrical signal, the method for deception jamming of a gunshot positioning device further comprises:
filtering the electric signal to obtain a filtered electric signal;
extracting a signal peak value of the filtered electrical signal;
and when the signal peak value is greater than or equal to a preset signal peak value, extracting time domain characteristic parameters and frequency domain characteristic parameters of the filtered electric signal.
In an embodiment, before the real-time collection of the environmental noise, the method for spoofing interference on a gunshot locator further comprises:
and receiving the output direction information and the sound output delay information of the simulated gunshot.
In one embodiment, the outputting simulates gunshot, comprising:
when the sound output delay information is delta tiWhen it is detectedAfter the real gunshot signal, delaying by delta tiOutputting the simulated gunshot in a preset output direction corresponding to the preset output direction information after time; wherein, the Δ tiThe following conditions are satisfied: Δ t1<Δ t, and Δ ti<[i·Δt-(Δt1+Δt2+…+Δti-1)]And i represents the number of the simulated gunshots, i is more than or equal to 1, and delta t represents the real gunshot duration.
In one embodiment, the outputting simulates gunshot, comprising:
when the sound output delay information is i-delta tdAt time, after the detection of a real gunshot signal, atdOutputting the simulated gunshot in a preset output direction corresponding to the preset output direction information at intervals; wherein, the Δ tdThe following conditions are satisfied: Δ td>And delta t, wherein i represents the number of the simulated gunshots, i is more than or equal to 1, and delta t represents the real gunshot time length.
A second aspect of an embodiment of the present invention provides a deception jamming system for a gunshot positioning device, including:
the signal acquisition module is used for acquiring environmental noise in real time and converting the environmental noise into an electric signal;
the gunshot recognition module is used for extracting a characteristic value of the electric signal; when the similarity between the characteristic value of the electric signal and a preset gunshot characteristic value reaches a preset threshold value, determining the electric signal as a real gunshot signal;
and the gun sound simulation module is used for outputting simulated gun sound, and the simulated gun sound is the simulated gun sound with the sound level and the frequency spectrum consistent with the real gun sound.
In one embodiment, the spoof interfering system of a gunshot locator further comprises:
the gunshot detection module is used for filtering the electric signal to obtain a filtered electric signal; and extracting a signal peak of the filtered electrical signal;
the input module is used for receiving preset output direction information and sound output delay information of the simulated gunshot;
and the control processing module is used for processing data handed over by the modules and controlling the modules to work cooperatively.
A third aspect of an embodiment of the present invention provides a terminal device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor when executing the computer program performing the steps as described above for a spoof-jamming method of a gunshot positioning device.
A fourth aspect of an embodiment of the present invention provides a computer-readable storage medium, including: the computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps as described above for a spoof-jamming method for a gunshot positioning device.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: the method comprises the steps of collecting environmental noise in real time, converting the environmental noise into an electric signal, extracting a characteristic value of the electric signal, outputting a simulated gunshot when the similarity between the characteristic value of the electric signal and a preset gunshot characteristic value reaches a preset threshold value, so that a real gunshot is submerged in the simulated gunshot, and a gunshot positioning device cannot detect the gunshot or detect a plurality of false gunshot positions, thereby improving the detection difficulty of the gunshot positioning device on the sniping gunshot, and being beneficial to protecting a sniper from being detected and identified easily.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a deception jamming method for a gunshot positioning device according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a deception jamming method for a gunshot positioning device according to another embodiment of the present invention;
FIG. 3 is an exemplary diagram of a spoof interfering system with a gunshot positioning device provided by one embodiment of the present invention;
FIG. 4 is a schematic diagram of a spoof interfering system with a gunshot positioning device provided in accordance with another embodiment of the invention;
fig. 5 is a schematic diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
The embodiment of the invention provides a deception jamming system for a gunshot positioning device. Fig. 1 is a schematic flow chart of an implementation of a spoofing interference method for a gunshot positioning device according to an embodiment of the present invention, which is described in detail below.
Optionally, in step 101, ambient noise in the located area may be collected in real time by using a non-directional miniature microphone.
Optionally, before this step, the method for deception jamming of the gunshot positioning device may further include setting an output direction and an output time for outputting the simulated gunshot. Optionally, the output direction information of the simulated gunshot and the sound output delay information are received. The output direction information may include information such as an output azimuth angle and a pitch angle.
And 102, extracting the characteristic value of the electric signal.
Optionally, the extracting the characteristic value of the electrical signal in step 102 may include extracting a time domain characteristic parameter and a frequency domain characteristic parameter of the electrical signal, so as to compare the time domain characteristic parameter and the frequency domain characteristic parameter with a characteristic value of a real gunshot, and determine whether the electrical signal is a sniping signal of the own sniper.
Optionally, as shown in fig. 2, the following steps may be further included before this step.
And step 1021, filtering the electric signal to obtain a filtered electric signal.
Optionally, in this step, the electrical signal is filtered to remove noise, so that the filtered electrical signal is further processed conveniently.
And 1023, detecting whether the signal peak value is larger than or equal to a preset signal peak value.
Optionally, when the signal peak value is greater than or equal to a preset signal peak value, performing step 1024; when the signal peak value is smaller than the preset signal peak value, the step 101 is continuously executed, that is, the environmental noise is collected again.
Optionally, the preset signal peak value may be set according to actual requirements.
And step 1024, extracting time domain characteristic parameters and frequency domain characteristic parameters of the filtered electric signals.
After performing the completion step 1024, step 103 is continued with reference to fig. 1.
And 103, outputting a simulated gunshot when the similarity between the characteristic value of the electric signal and the preset gunshot characteristic value reaches a preset threshold, wherein the simulated gunshot is a simulated gunshot with the sound level and the frequency spectrum consistent with the real gunshot.
Optionally, when the simulated gunshot is output in this step, the simulated gunshot can be output according to the set sound output delay information. Outputting the simulated gunshot may include the following two ways.
The first method is as follows: when the sound is transmittedThe delay information is DeltatiAt the time, after the real gunshot signal is detected, the time is delayed by delta tiOutputting the simulated gunshot in a preset output direction corresponding to the preset output direction information after time; wherein, the Δ tiThe following conditions are satisfied: Δ t1<Δ t, and Δ ti<[i·Δt-(Δt1+Δt2+…+Δti-1)]And i represents the number of the simulated gunshots, i is more than or equal to 1, and delta t represents the real gunshot duration.
Optionally, when the number of the decoy terminals is multiple, after the real gunshot signal is detected, the multiple decoy terminals sequentially output the simulated gunshot in the preset output direction corresponding to the preset output direction information at different time intervals, that is, the first decoy terminal delays by Δ t1Outputting the simulated gunshot in the preset output direction corresponding to the preset output direction information after time, and delaying the time by delta t by a second decoy terminal2And outputting the simulated gunshot in the preset output direction corresponding to the preset output direction information after the time till the plurality of false target terminals all output the simulated gunshot, so that the real gunshot can be submerged in the simulated gunshot, and the gunshot positioning device can not detect the gunshot or detect a plurality of false gunshot positions.
The second method comprises the following steps: when the sound output delay information is i-delta tdAt time, after the detection of a real gunshot signal, atdOutputting the simulated gunshot in a preset output direction corresponding to the preset output direction information at intervals; wherein, the Δ tdThe following conditions are satisfied: Δ td>And delta t, wherein i represents the number of the simulated gunshots, i is more than or equal to 1, and delta t represents the real gunshot time length.
Optionally, when the number of the decoy terminals is multiple, after the real gunshot signal is detected, Δ t may be useddIn order to copy a plurality of simulated gunshots at different positions at intervals, the difficulty of detecting the position of the real gunshot by the gunshot positioning device is improved by hiding the real gunshot in a plurality of false targets at different positions. For example, the first decoy terminal delay Δ tdOutputting the simulated gunshot in the preset output direction corresponding to the preset output direction information after the time,second decoy terminal delay 2 deltatdAnd after the time, outputting the simulated gunshot in the preset output direction corresponding to the preset output direction information until all the plurality of decoy terminals output the simulated gunshot.
Optionally, as shown in fig. 2, the following steps may be further included before this step.
And 1025, detecting whether the similarity between the characteristic value of the electric signal and a preset gunshot characteristic value reaches a preset threshold value.
Optionally, the preset threshold is a similarity threshold, and may be set according to actual requirements, for example, the preset threshold may be 90%, 95%, and the like.
Optionally, when the similarity between the characteristic value of the electrical signal and the preset gunshot characteristic value reaches a preset threshold, step 103 is executed, and when the similarity between the characteristic value of the electrical signal and the preset gunshot characteristic value does not reach the preset threshold, that is, when the similarity between the characteristic value of the electrical signal and the preset gunshot characteristic value is smaller than the preset threshold, step 101 is continuously executed, that is, the environmental noise is collected again.
According to the deception jamming method for the gunshot positioning device, the environmental noise is collected in real time, the environmental noise is converted into the electric signal, then the characteristic value of the electric signal is extracted, and when the similarity between the characteristic value of the electric signal and the characteristic value of the preset gunshot reaches the preset threshold value, the simulated gunshot is output, so that the real gunshot is submerged in the simulated gunshot, the gunshot positioning device cannot detect the gunshot or detect a plurality of false gunshot positions, the detection difficulty of the gunshot positioning device for sniping the gunshot is improved, and the sniper in the own party can be protected from being detected and identified easily.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Corresponding to the spoof jamming method for a gunshot positioning device described in the above embodiments, fig. 3 shows an exemplary diagram of a spoof jamming system for a gunshot positioning device provided by an embodiment of the present invention. As shown in fig. 3, the system may include: a signal acquisition module 301, a gunshot recognition module 302, and a gunshot simulation module 303.
The signal acquisition module 301 is configured to acquire environmental noise in real time and convert the environmental noise into an electrical signal;
the gunshot recognition module 302 is configured to extract a feature value of the electrical signal, and determine that the electrical signal is a real gunshot signal when a similarity between the feature value of the electrical signal and a preset gunshot feature value reaches a preset threshold;
and the gun sound simulation module 303 is used for outputting a simulated gun sound, wherein the simulated gun sound is a simulated gun sound with sound level and frequency spectrum consistent with the real gun sound.
Optionally, the gunshot simulation module 303 may obtain a simulated gunshot with a sound level and a frequency spectrum both consistent with a real gunshot by using a detonation sound generated by spark discharge of a high energy storage circuit.
The gunshot simulation module 303 may further include a discharge electrode group, an ignition circuit connected to the discharge electrode group, and an energy storage circuit. The discharge electrode group consists of an ignition electrode and a discharge electrode, wherein the ignition electrode is positioned at the inner side of the discharge electrode, and the height of the ignition electrode is lower than that of the discharge electrode. After receiving the order of the sound gun, the ignition circuit generates ignition spark through the discharge of the ignition electrode, and then detonates the energy storage circuit to discharge large-current air through the discharge electrode group to generate detonation sound. The sound level and the spectral characteristics of the simulated gunshot can be changed by adjusting the parameters of the circuit devices and the structure of the sound output cavity.
Optionally, as shown in fig. 4, the system for spoofing and interfering a gunshot positioning device may further include: a gunshot detection module 304, an input module 305, and a control processing module 306.
The gunshot detection module 304 is configured to filter the electrical signal to obtain a filtered electrical signal; and extracting signal peaks of the filtered electrical signal.
Optionally, when the signal peak value is greater than or equal to a preset signal peak value, the gunshot recognition module 302 is further configured to extract a time domain characteristic parameter and a frequency domain characteristic parameter of the filtered electrical signal.
Optionally, before the signal collecting module 301 performs an operation, the input module 305 is configured to receive preset output direction information of the simulated gunshot and sound output delay information.
Optionally, the input unit is provided with 14 keys, such as "0-9", "azimuth", "pitch angle", "delay", and "clear", for the gun sound simulation module 303 to simulate the sound output direction of the gun sound and input the gun sounding delay parameter.
Optionally, the system for spoofing interference on a gunshot positioning device may further include: a tracking module 307.
The tracking module 307 may be configured to adjust the output direction of the simulated gunshot according to the azimuth and pitch parameters collected by the input module 305. Optionally, the tracking module 307 may include a power supply, a stepping motor, and a pan-tilt, and the pan-tilt may be disposed at the bottom of the gunshot simulation module 303.
The control processing module 306 is configured to process data handed over by each module and control each module to work cooperatively. The control processing module 306 takes a programmable logic device as a core, and when the input module 305 receives an input azimuth angle or a pitch angle, the control processing module 306 controls a stepping motor of the tracking module 307 to change a corresponding angle of the pan-tilt; when the input module 305 receives the input delay time, the control processing module 306 stores the delay parameter, and when the gunshot recognition module 302 recognizes the real gunshot signal, the control processing module 306 delays the set time interval and drives the gunshot simulation module 303 to emit the simulated gunshot.
According to the deception jamming system for the gunshot positioning device, the signal acquisition module is used for acquiring the environmental noise in real time, the environmental noise is converted into the electric signal, then the gunshot recognition module is used for extracting the characteristic value of the electric signal, and when the similarity between the characteristic value of the electric signal and the preset gunshot characteristic value reaches the preset threshold value, the electric signal is determined to be the real gunshot signal; the gunshot simulation module outputs the simulated gunshot, so that the real gunshot is submerged in the simulated gunshot, and the gunshot positioning device cannot detect the gunshot or detect a plurality of false gunshot positions, thereby improving the detection difficulty of the gunshot positioning device on the sniping gunshot, and being beneficial to protecting the sniper from being detected and identified.
Fig. 5 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 5, the terminal device 500 of this embodiment includes: a processor 501, a memory 502 and a computer program 503 stored in the memory 502 and executable on the processor 501, such as a spoofing interference program for a gunshot locating device. The processor 501 executes the computer program 503 to implement the steps in the above-described embodiment of the spoofing interference method for a gunshot positioning device, such as the steps 101 to 103 shown in fig. 1 or fig. 2, and the processor 501 executes the computer program 503 to implement the functions of the modules in the above-described embodiments of the devices, such as the functions of the modules 301 to 303 shown in fig. 3 or the functions of the modules 301 to 307 shown in fig. 4.
Illustratively, the computer program 503 may be partitioned into one or more program modules that are stored in the memory 502 and executed by the processor 501 to implement the present invention. The one or more program modules may be a series of computer program instruction segments capable of performing specific functions describing the execution of the computer program 503 in the spoof interfering system or terminal device 500 for a gunshot positioning device. For example, the computer program 503 may be divided into a signal acquisition module 301, a gunshot recognition module 302, and a gunshot simulation module 303, and specific functions of each module are shown in fig. 3, and the computer program 503 may be divided into the signal acquisition module 301, the gunshot recognition module 302, the gunshot simulation module 303, the gunshot detection module 304, the input module 305, the control processing module 306, and the tracking module 307, and specific functions of each module refer to the embodiment corresponding to fig. 4, which is not described in detail herein.
The terminal device 500 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor 501, a memory 502. Those skilled in the art will appreciate that fig. 5 is merely an example of a terminal device 500 and is not intended to limit the terminal device 500 and may include more or fewer components than those shown, or some components may be combined, or different components, for example, the terminal device may also include input output devices, network access devices, buses, etc.
The Processor 501 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 502 may be an internal storage unit of the terminal device 500, such as a hard disk or a memory of the terminal device 500. The memory 502 may also be an external storage device of the terminal device 500, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 500. Further, the memory 502 may also include both an internal storage unit and an external storage device of the terminal device 500. The memory 502 is used for storing the computer programs and other programs and data required by the terminal device 500. The memory 502 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. . Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A method of spoofing interference with a gunshot locator, comprising:
collecting environmental noise in real time, and converting the environmental noise into an electric signal;
extracting a characteristic value of the electric signal; the extracting the characteristic value of the electric signal comprises:
extracting time domain characteristic parameters and frequency domain characteristic parameters of the electric signals;
before the extracting the time domain characteristic parameters and the frequency domain characteristic parameters of the electric signals, the method for cheating and interfering the gunshot positioning device further comprises the following steps:
filtering the electric signal to obtain a filtered electric signal;
extracting a signal peak value of the filtered electrical signal;
when the signal peak value is larger than or equal to a preset signal peak value, extracting time domain characteristic parameters and frequency domain characteristic parameters of the filtered electric signal;
when the similarity between the characteristic value of the electric signal and a preset gunshot characteristic value reaches a preset threshold value, outputting a simulated gunshot, wherein the simulated gunshot is a simulated gunshot with the sound level and the frequency spectrum consistent with the real gunshot; the preset gunshot characteristic value is the real gunshot characteristic value of the own sniper.
2. The method of spoofing interference with a gunshot locator of claim 1 wherein prior to said real-time collection of ambient noise, the method of spoofing interference with a gunshot locator further comprises:
and receiving the output direction information and the sound output delay information of the simulated gunshot.
3. A method of deception jamming for a gunshot positioning device as recited in claim 2, wherein said outputting a simulated gunshot comprises:
when the sound output delay information is delta tiAt the time, after the real gunshot signal is detected, the time is delayed by delta tiOutputting the simulated gunshot in a preset output direction corresponding to the preset output direction information after time; wherein, the Δ tiThe following conditions are satisfied: Δ t1<Δ t, and Δ ti<[i·Δt-(Δt1+Δt2+…+Δti-1)]And i represents the number of the simulated gunshots, i is more than or equal to 1, and delta t represents the real gunshot duration.
4. A method of deception jamming for a gunshot positioning device as recited in claim 2, wherein said outputting a simulated gunshot comprises:
when the sound output delay information is i-delta tdAt time, after the detection of a real gunshot signal, atdOutputting the simulated gunshot in a preset output direction corresponding to the preset output direction information at intervals; wherein, the Δ tdThe following conditions are satisfied: Δ td>And delta t, wherein i represents the number of the simulated gunshots, i is more than or equal to 1, and delta t represents the real gunshot time length.
5. A spoof jamming system for a gunshot locator, comprising:
the signal acquisition module is used for acquiring environmental noise in real time and converting the environmental noise into an electric signal;
the gunshot recognition module is used for extracting a characteristic value of the electric signal; when the similarity between the characteristic value of the electric signal and a preset gunshot characteristic value reaches a preset threshold value, determining the electric signal as a real gunshot signal; the preset gunshot characteristic value is a real gunshot characteristic value of a sniper of own party;
the extracting the characteristic value of the electric signal comprises:
extracting time domain characteristic parameters and frequency domain characteristic parameters of the electric signals;
the spoof interfering system of a gunshot locator further comprises:
the gunshot detection module is used for filtering the electric signal to obtain a filtered electric signal; and extracting a signal peak of the filtered electrical signal; detecting whether the signal peak value is greater than or equal to a preset signal peak value;
the gunshot recognition module is used for extracting time domain characteristic parameters and frequency domain characteristic parameters of the filtered electric signals when the signal peak value is larger than or equal to a preset signal peak value;
and the gun sound simulation module is used for outputting simulated gun sound, and the simulated gun sound is the simulated gun sound with the sound level and the frequency spectrum consistent with the real gun sound.
6. The system of claim 5, wherein the system further comprises:
the input module is used for receiving preset output direction information and sound output delay information of the simulated gunshot; and the control processing module is used for processing data handed over by the modules and controlling the modules to work cooperatively.
7. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 4 when executing the computer program.
8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
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