Non-communication noise interference method and system

Abstract

The present invention provides a non-communication noise jamming method and system, the method comprising: determining to perform a target operating condition conversion at a target time; setting a plurality of noise jammers, so that the noise jammers emit interference noise with a power spectrum corresponding to the target operating condition conversion at the target time; and respectively placing the noise jammers at a plurality of different locations in the sea area, so that a plurality of the noise jammers are distributedly deployed in the sea area. The method of the present invention can reduce the probability of detecting the noise generated by a marine vehicle when performing an operating condition conversion during navigation, thereby improving the concealment of the marine vehicle.

Description

Technical Field

[0001] The present invention relates to the field of signal processing, and in particular to a non-communication noise interference method and system. Background Art

[0002] Controlling the noise radiated outward by marine vehicles while sailing at sea can effectively improve the stealth of the vehicles, thus playing an important strategic role in modern warfare.

[0003] In a complex ocean environment, marine vehicles often need to use different operating conditions to change their position and navigation direction during navigation. However, the noise generated by the vehicle during speed-up, speed-down and other operating condition transitions is difficult to reduce. At this time, the noise radiated by the vehicle to the surroundings can easily be detected and tracked by other sonar equipment, thereby exposing its own position and facing the risk of military strikes.

[0004] How to reduce the probability of detection of noise generated by marine vehicles during state transitions during navigation, thereby improving the stealth of the vehicle, is an important issue that the industry urgently needs to address. Summary of the invention

[0005] The present invention provides a non-communication noise interference method and system to solve the defect in the prior art that the noise emitted by a marine vehicle during a working state transition is easily detected, resulting in poor concealment of the marine vehicle, thereby improving the concealment of the marine vehicle during a working state transition.

[0006] The present invention provides a non-communication noise jamming method, which is applied to marine vehicles, comprising:

[0007] Determine to perform a target operating condition conversion at a target time; set up a plurality of noise jammers so that the noise jammers emit interference noise with a power spectrum corresponding to the target operating condition conversion at the target time; and place the noise jammers at a plurality of different locations in the sea area so that the plurality of noise jammers are deployed in a distributed manner in the sea area.

[0008] According to a non-communication noise interference method provided by the present invention, the method further includes:

[0009] The target time is input into the noise jammer, and the noise jammer is set to perform an action of emitting interference noise with a power spectrum corresponding to the target operating condition conversion at the target time; or based on the current time of placing the noise jammer and the delay time determined by the target time, the noise jammer is set to perform an action of emitting interference noise with a power spectrum corresponding to the target operating condition conversion after the delay time; wherein the delay time lengths corresponding to the multiple noise jammers are different from each other.

[0010] A noise power spectrum library is stored in each of the noise jammers, and the noise power spectrum library includes noise power spectra corresponding to a variety of operating condition conversions.

[0011] In multiple time periods, a noise measuring instrument is used to continuously monitor the timing signals corresponding to the conversion of multiple operating conditions; power spectrum analysis is performed on the multiple timing signals respectively to obtain the noise power spectra of the conversion of the multiple operating conditions; and the noise power spectrum library is established based on the multiple noise power spectra.

[0012] The noise jammer comprises a noise generating device, a battery and a controller; wherein: the controller is used to control the noise jammer to start at a target time corresponding to each working condition conversion; the battery is used to provide electrical energy; and the noise generating device stores the noise power spectrum library.

[0013] The present invention also provides a non-communication noise jamming system, which is applied to a marine vehicle, comprising:

[0014] A marine vehicle and a plurality of noise jammers; wherein the marine vehicle is used to determine a target operating condition conversion at a target time; the noise jammer is used to emit interference noise with a power spectrum corresponding to the target operating condition conversion at the target time; the plurality of noise jammers are sequentially placed at a plurality of different locations in the sea area before the target time, so that the plurality of noise jammers are deployed in a distributed manner in the sea area.

[0015] According to a non-communication noise interference system provided by the present invention, the system further includes:

[0016] A noise power spectrum library is stored in each of the noise jammers, and the noise power spectrum library includes noise power spectra corresponding to a variety of operating condition conversions.

[0017] The noise jammer comprises a noise generating device, a battery and a controller; wherein: the controller is used to control the noise jammer to start at a target time corresponding to each working condition conversion; the battery is used to provide electrical energy; and the noise generating device stores the noise power spectrum library.

[0018] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any of the above-mentioned non-communication noise interference methods are implemented.

[0019] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the non-communication noise interference methods described above are implemented.

[0020] The present invention provides a non-communication noise jamming method and system, which first determines a target operating condition conversion corresponding to a target moment, then sets a plurality of noise jammers to emit jamming noise with a power spectrum corresponding to the noise emitted by the target operating condition conversion at the target moment, and finally deploys the plurality of noise jammers at different locations in the sea area in a distributed manner; when a marine vehicle performs a corresponding operating condition conversion at the target moment, the plurality of noise jammers are simultaneously started and emit jamming noise with the same power as the noise emitted by the operating condition conversion, making it difficult for sonar equipment to identify the specific location of the marine vehicle based on the detected noise, thereby improving the concealment of the marine vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a flow chart of a non-communication noise interference method provided by an embodiment of the present invention;

[0023] Figure 2 is a structural schematic diagram of a non-communication noise jamming system provided by an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of the structure of a noise jammer provided by an embodiment of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Combine the following Figure 1 The non-communication noise interference method provided by an embodiment of the present invention is described, and is applied to a marine vehicle, comprising:

[0028] Step 101: Determine to perform a target operating condition conversion at a target time.

[0029] Step 102: multiple noise jammers are set, so that the noise jammers emit interference noise with a power spectrum corresponding to the target operating condition conversion at the target time.

[0030] Step 103: deploy the noise jammers to multiple different locations in the sea area, so that multiple noise jammers are deployed in a distributed manner in the sea area.

[0031] It is understandable that in order to make the noise emitted by the marine vehicle during the target operating condition conversion not easily recognized by other sonar equipment, it is necessary to determine the target time t corresponding to the operating condition conversion before the target operating condition conversion is performed. d , and then set multiple noise jammers in advance at t d Start and launch at the same time as t d The interference noise corresponding to the noise power spectrum of the working condition conversion at all times, after the setting is completed, multiple noise jammers are deployed in the sea area in a distributed manner to expand the range of the noise source; when the marine vehicle is at t d When the corresponding operating mode conversion is performed at time t, multiple noise jammers simultaneously emit interference noise with the same power spectrum as the noise emitted by the current operating mode conversion.

[0032] The method described in this embodiment can enable the sonar equipment in the nearby sea area to detect multiple noises with the same power and different positions when the marine vehicle switches between different working conditions. It is not easy for the sonar equipment in the nearby sea area to identify the specific position of the marine vehicle based on the detected noise, thereby improving the concealment of the marine vehicle when the working condition changes.

[0033] Optionally, the target time is input into the noise jammer, and the noise jammer is set to perform an action of emitting interference noise with a power spectrum corresponding to the target operating condition conversion at the target time; or a delay duration is determined based on the current time of placing the noise jammer and the target time, and the noise jammer is set to perform an action of emitting interference noise with a power spectrum corresponding to the target operating condition conversion after the delay duration; wherein the delay durations corresponding to multiple noise jammers are different from each other.

[0034] It is understandable that in order to ensure that the marine vehicle is at the target time t d The target operating condition conversion is performed, and at the same time, multiple noise jammers in the sea area can be activated to emit interference noise with a power spectrum corresponding to the target operating condition conversion. It is necessary to set the aircraft in advance at t d Start at the specified time. d Before the moment, on the one hand, if multiple noise jammers are deployed at different locations in the sea area at the same time, it is necessary to set t for each noise jammer. dIt starts automatically at all times; specifically, for example, a ship finds an abnormal target at 12:03 and prepares to speed up and leave its original position at 12:03, then before 12:03, it is necessary to prepare several noise jammers, which can emit interference noise with the same noise power spectrum as the ship emits when speeding up, and set the noise jammer to start at 12:03, and then put several set noise jammers into the sea at the same time in a distributed deployment; when the ship performs the speed-up operation at 12:03, several noise jammers deployed in the sea in advance simultaneously emit interference noise with a power spectrum corresponding to the speed-up operation, thereby providing noise cover for the speed-up process of the ship.

[0035] On the other hand, if multiple noise jammers are deployed to different locations in the sea area in sequence, it is necessary to determine the current deployment time and t of each noise jammer. d The time difference between the moments, wherein the time difference corresponding to each noise jammer is different. Specifically, the corresponding time difference of the first noise jammer to be deployed is the largest, and the corresponding time difference of the last noise jammer to be deployed is the smallest. Each noise jammer is set to be activated from the beginning of deployment to the corresponding time difference, so as to emit interference noise with a power spectrum corresponding to the target working condition conversion. For example, a ship discovers an abnormal target at 12:00 and prepares to speed up and leave the original position at 12:03. After preparing the noise jammers to be deployed, the noise jammers are deployed to different locations in the sea area in sequence. If the first noise jammer to be deployed is deployed in the sea at 12:01, the noise jammer is set to automatically start after 120 seconds, and emit interference noise with a power spectrum corresponding to the speed-up operation. If the second noise jammer is deployed at 12:01:30, the noise jammer is set to automatically start after 90 seconds, and emit interference noise with a power spectrum corresponding to the above-mentioned speed-up operation. Interference noise corresponding to the power spectrum, and so on, if the last noise jammer to be deployed is deployed at 12:02:15, the noise jammer is set to automatically start after 45 seconds, and emits interference noise with a power spectrum corresponding to the above-mentioned speed-up operation. It should be noted that the last noise jammer to be deployed must be deployed in the sea area before 12:03; when the ship performs a speed-up operation at 12:03, several noise jammers deployed in the sea area in advance simultaneously emit interference noise with a power spectrum corresponding to the speed-up operation, thereby providing noise cover for the speed-up process of the ship.

[0036] The method described in this embodiment can ensure that the aircraft is dWhile the target operating condition is being converted at all times, multiple noise jammers can emit interference noise with the same noise power spectrum as the target operating condition conversion, thereby providing comprehensive noise cover for the entire process of each target operating condition conversion from the beginning to the end, making it impossible for sonar equipment in nearby sea areas to correctly identify the moving position of the vehicle during the operating condition conversion, thereby improving the stealth of the vehicle during navigation.

[0037] Optionally, each of the noise disruptors stores a noise power spectrum library, and the noise power spectrum library includes noise power spectra corresponding to a plurality of operating condition conversions.

[0038] It can be understood that in order for the noise jammer to emit noise with a power spectrum corresponding to the noise emitted when the current working condition is switched, it is necessary to d Before the moment t, a noise power spectrum library containing the power spectrum of the noise emitted by the aircraft when it switches to different working conditions is stored in each noise jammer, and then the noise jammer is set to d It starts automatically at all times and emits interference noise with a power spectrum corresponding to the current working condition conversion in the noise power spectrum library.

[0039] The method described in this embodiment can ensure that the noise emitted by the aircraft when the current operating condition is switched is consistent with the power of the noise emitted by multiple noise jammers, so that the sonar equipment in the nearby sea area cannot identify the specific location of the marine aircraft based on the detected noise power, thereby improving the concealment of the marine aircraft.

[0040] Optionally, in multiple time periods, a noise meter is used to continuously monitor timing signals corresponding to multiple operating condition conversions; power spectrum analysis is performed on multiple timing signals respectively to obtain noise power spectra of the multiple operating condition conversions; and the noise power spectrum library is established based on multiple noise power spectra.

[0041] It can be understood that in order to obtain the noise power spectrum corresponding to the noise emitted by the aircraft when the aircraft switches between k working conditions, k = 1, 2, 3, ..., at multiple t a ~t b During the time period, the noise measuring instrument is used to continuously monitor the timing signals V1(t), V2(t)...V corresponding to the k working condition conversions. k (t), and use spectrum analysis software such as MATLAB, LabView or Origin to perform power spectrum analysis on the above time series signals. The specific steps are as follows:

[0042] Step 1: In a t a ~t b During the time period, the noise measuring instrument collects the time series signals V1(t), V2(t)...V k (t) each has m data, where m is a natural number greater than 1, and they are:

[0043] V1(m)=[V 11 (t a ), V 12 (t a )...V 1m (t b )];

[0044] V2(m)=[V 21 (t a ), V 22 (t a )...V 2m (t b )]; ...

[0045] V k (m)=[V k1 (t a ), V k2 (t a )...V km (t a )].

[0046] The software is used to analyze the time series signals V1(t), V2(t)...V collected by the noise measuring instrument when k kinds of working conditions are switched. k (t) respectively perform spectrum analysis, divide the collected time series signal frequency domain into (p-1) parts, and then form the conversion of each working condition at time t a ~t b The noise power spectrum is:

[0047] X1(t a ~t b )=[X1(f1),X1(f2)...X1(f p )];

[0048] X2(t a ~t b )=[X2(f1),X2(f2)...X2(f p )]; ...

[0049] X k (t a ~t b )=[X k (f1), X k (f2)...X k (f p )].

[0050] in,

[0051] Step 2: For each t a ~t b The above analysis is performed in the time period to obtain the conversion noise of each working condition in multiple t a ~t b The spectrum within the time period is averaged to obtain the noise power spectrum X1′(t a ~t b ), X2′(t a ~t b )...X k ′(t a ~t b ),in:

[0052] X1′(t a ~t b )=[X1′(f1),X1′(f2)...X1′(f p )];

[0053] X2′(t a ~t b )=[X2′(f1),X2′(f2)...X2′(f p )]; ...

[0054] X k ′(t a ~t b )=[X k ′(f1),X k ′(f2)...X k ′(f p )].

[0055] Step 3: Input the noise power spectra of the ship's k operating conditions into the database to form a noise power spectrum library of the ship's operating conditions.

[0056] The method described in this embodiment constructs a power spectrum library of the power spectrum of the noise emitted by the aircraft when different operating conditions are switched, so that the power spectrum library can be subsequently stored in each noise jammer so that the noise jammer generates interference noise with a power spectrum corresponding to the current operating condition conversion.

[0057] Optionally, the noise jammer includes a noise generating device, a battery and a controller; wherein: the controller is used to control the noise jammer to start at a target time corresponding to each operating condition conversion; the battery is used to provide electrical energy; and the noise generating device stores the noise power spectrum library.

[0058] It can be understood that for each noise jammer, a controller needs to be set up to control the noise jammer to start at the corresponding target time; a noise generating device needs to be set up to store the noise power spectrum library so that the noise jammer can emit interference noise with a power spectrum corresponding to the current working condition conversion in the noise power spectrum library; and a battery needs to be set up to provide electrical energy to the noise jammer.

[0059] The method described in this embodiment enables each noise jammer to automatically start at the corresponding moment of the current target conversion and emit interference noise with a power spectrum corresponding to the current operating condition conversion.

[0060] Combine the following Figure 2 A non-communication type noise interference system provided by an embodiment of the present invention is described. The non-communication type noise interference system described below and the non-communication type noise interference method described above can refer to each other.

[0061] The present invention provides a non-communication noise interference system, comprising:

[0062] A marine vehicle and a plurality of noise jammers; wherein the marine vehicle is used to determine a target operating condition conversion at a target time; the noise jammer is used to emit interference noise with a power spectrum corresponding to the target operating condition conversion at the target time; the plurality of noise jammers are sequentially placed at a plurality of different locations in the sea area before the target time, so that the plurality of noise jammers are deployed in a distributed manner in the sea area.

[0063] Optionally, each of the noise disruptors stores a noise power spectrum library, and the noise power spectrum library includes noise power spectra corresponding to a plurality of operating condition conversions.

[0064] Optionally, the structural diagram of each noise jammer is as follows: Figure 3 shown. Figure 3 The noise jammer shown includes a noise generating device, a battery and a controller; wherein: the controller is used to control the noise jammer to start at the target time corresponding to each working condition conversion; the battery is used to provide electrical energy; and the noise generating device stores the noise power spectrum library.

[0065] The non-communication noise jammer system provided in this embodiment first obtains the corresponding noise power spectrum of the noise emitted by the marine vehicle 201 when it switches to different working conditions, forms a noise power spectrum library, and stores the noise power spectrum library in m noise jammers 202, where m is a natural number; then determines that the marine vehicle performs the corresponding target working condition conversion at the target time, and before the target time, sets m noise jammers 202 to start at the target time, and puts the m noise jammers into the sea. If m is a natural number greater than 1, the m noise jammers are deployed in a distributed manner at different locations in the sea; when the marine vehicle When the aircraft 201 performs the target working condition conversion at the target time, m noise jammers are simultaneously started and emit interference noise with a power spectrum corresponding to the target working condition conversion; for each noise jammer 202, its controller 303 controls the noise jammer to start at the corresponding target time, and its noise generating device 301 emits interference noise with a power spectrum corresponding to the current working condition conversion, and its storage battery 302 provides the power required for the jammer to operate; in addition, this embodiment is to place the m noise jammers 202 placed on the marine aircraft 201 in the sea area before the target time in a distributed manner. The system provided in this embodiment uses a non-communication method to control the m noise jammers 202 to simultaneously emit interference noise with the same power spectrum as the noise emitted by the current working condition conversion, so that the sonar equipment is not easy to identify the specific location of the marine aircraft 201 based on the detected noise, thereby improving the concealment of the marine aircraft 201 during the working condition conversion.

[0066] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute a non-communication noise interference method, the method comprising: determining to perform a target operating condition conversion; sending a start signal to noise jammers arranged at multiple different positions in the sea area, the start signal being used to trigger each noise jammer to emit interference noise with a power spectrum corresponding to the target operating condition conversion when the marine vehicle performs the target operating condition conversion.

[0067] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0068] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute a non-communication noise interference method provided by the above-mentioned methods. The method includes: determining to perform a target operating condition conversion; sending a start signal to noise jammers arranged at multiple different locations in the sea area, and the start signal is used to trigger each noise jammer to emit interference noise with a power spectrum corresponding to the target operating condition conversion when the marine vehicle performs the target operating condition conversion.

[0069] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0070] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-communication noise interference method, characterized in that: Applications to marine vehicles, including: Determine to perform target operating condition conversion at target time; Arrange a plurality of noise jammers so that the noise jammers emit interference noise having a power spectrum corresponding to the target operating condition conversion at the target time; The noise jammers are respectively placed at a plurality of different locations in the sea area, so that a plurality of the noise jammers are deployed in a distributed manner in the sea area.

2. The non-communication noise interference method according to claim 1, characterized in that: The setting of multiple noise disruptors comprises: Inputting the target time into the noise jammer, and setting the noise jammer to perform an action of emitting interference noise having a power spectrum corresponding to the target operating condition conversion at the target time; or Based on the current moment of deploying the noise jammer and the delay time determined at the target moment, the noise jammer is set to emit interference noise having a power spectrum corresponding to the target operating condition conversion after the delay time; wherein the delay time lengths corresponding to the multiple noise jammers are different from each other.

3. The non-communication noise interference method according to claim 1 or 2, characterized in that: A noise power spectrum library is stored in each of the noise jammers, and the noise power spectrum library includes noise power spectra corresponding to a variety of operating condition conversions.

4. The non-communication noise interference method according to claim 3, characterized in that: The method further comprises: In multiple time periods, the noise measuring instrument is used to continuously monitor the timing signals corresponding to the conversion of various working conditions; Perform power spectrum analysis on multiple time series signals respectively to obtain noise power spectra of various working condition conversions; The noise power spectrum library is established based on a plurality of noise power spectra.

5. The non-communication noise interference method according to claim 3, characterized in that: The noise jammer comprises a noise generating device, a battery and a controller; wherein: The controller is used to control the noise jammer to start at a target time corresponding to each working condition conversion; The storage battery is used to provide electrical energy; The noise generating device stores the noise power spectrum library.

6. A non-communication noise jamming system, characterized in that: include: a marine vehicle, and, a plurality of noise jammers; Wherein, the marine vehicle is used to determine to perform a target operating condition conversion at a target time; The noise jammer is used to emit interference noise with a power spectrum corresponding to the target working condition conversion at the target time; The multiple noise jammers are placed in sequence at multiple different locations in the sea area before the target time, so that the multiple noise jammers are deployed in a distributed manner in the sea area.

7. The non-communication noise jamming system according to claim 6, characterized in that: A noise power spectrum library is stored in each of the noise jammers, and the noise power spectrum library includes noise power spectra corresponding to a variety of operating condition conversions.

8. The non-communication noise jamming system according to claim 7, characterized in that: The noise jammer comprises a noise generating device, a battery and a controller; wherein: The controller is used to control the noise jammer to start at a target time corresponding to each working condition conversion; The storage battery is used to provide electrical energy; The noise generating device stores the noise power spectrum library.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the non-communication noise interference method according to any one of claims 1 to 5 are implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the non-communication noise interference method according to any one of claims 1 to 5 are implemented.

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