CN110138495B - Low altitude unmanned aerial vehicle defense method, device and system - Google Patents
Low altitude unmanned aerial vehicle defense method, device and system Download PDFInfo
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- CN110138495B CN110138495B CN201910410557.5A CN201910410557A CN110138495B CN 110138495 B CN110138495 B CN 110138495B CN 201910410557 A CN201910410557 A CN 201910410557A CN 110138495 B CN110138495 B CN 110138495B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/92—Jamming or countermeasure characterized by its function related to allowing or preventing remote control
Abstract
The invention relates to the technical field of unmanned aerial vehicles, and particularly discloses a low-altitude unmanned aerial vehicle defense method, wherein the low-altitude unmanned aerial vehicle defense method comprises the following steps: acquiring a counter strategy signal issued by an upper computer; judging whether the countercheck strategy signal is a completely cracked signal; if the countercheck strategy signal is a complete cracking signal, generating an accurate striking signal; performing signal processing on the accurate striking signal to obtain an accurate striking amplification signal; transmitting the precise striking amplification signal; if the countercheck strategy signal is a non-complete cracking signal, generating a broadband interference signal; processing the broadband interference signal to obtain a broadband interference amplification signal; and transmitting the broadband interference amplification signal. The invention also discloses a low-altitude unmanned aerial vehicle defense device and a system. The low-altitude unmanned aerial vehicle defense method provided by the invention can cover various types of unmanned aerial vehicles, so that the black-flying unmanned aerial vehicle can be more effectively countered.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicles, in particular to a low-altitude unmanned aerial vehicle defense method, a low-altitude unmanned aerial vehicle defense device and a low-altitude unmanned aerial vehicle defense system comprising the low-altitude unmanned aerial vehicle defense device.
Background
At present, unmanned aerial vehicle defense mainly comprises two methods of high-power pressing and accurate striking. The high-power suppression is mainly that the interference signal of more powerful is sent at unmanned aerial vehicle communication frequency channel, suppresses and disturbs the communication between unmanned aerial vehicle and the remote controller, specifically realizes as shown in figure 1, produces the frequency sweep signal by the frequency sweep oscillator, generally is the wide band signal, has occupied this unmanned aerial vehicle communication's whole frequency channel, behind filtering and wide band amplifier, disturbs the communication between unmanned aerial vehicle and the remote controller. The counter-braking technology of high-power pressing is simple to operate and takes effect quickly, but in the era of popularization of unmanned aerial vehicle technology, high-power pressing often causes great interference to same-frequency electronic equipment in a defense range, and normal work of the equipment is influenced. Meanwhile, when an autonomous unmanned aerial vehicle or a registered unmanned aerial vehicle flies in a precaution area, the high-power pressing method can cause the unmanned aerial vehicle to be out of control, and normal work is influenced.
The accurate striking is to adopt software radio and protocol analysis to break the communication between the unmanned aerial vehicle and the remote controller, and adopt an accurate method to take over or block the communication between the unmanned aerial vehicle and the remote controller. As shown in fig. 2, according to the software radio and the protocol cracking result, an accurate interference or control signal is generated to counter or supervise the drone, the generated signal is related to the communication frequency, modulation mode, coding, filtering, protocol, encryption, compression and the like used for communication between the drone and the remote controller, and the signal link of the drone is cut off or supervised in a point-to-point targeted manner. The anti-system technology of accurate striking is stronger than the pertinence, on the basis of breaking unmanned aerial vehicle radio communication agreement, and the illegal invasion unmanned aerial vehicle of pertinence attack, then can not produce any interference to legal unmanned aerial vehicle or the unmanned aerial vehicle of not choosing the attack target, also can not have any influence to the same frequency channel communication equipment in the guard against area.
The unmanned aerial vehicle communication protocol of different brands of unmanned aerial vehicles needs to be cracked in advance online in an accurate striking function, a cracking database of the unmanned aerial vehicle is established, in the practical application process, the unmanned aerial vehicle which does not crack the communication protocol cannot complete real-time cracking work, real-time defense is conducted, defense holes are formed, meanwhile, the unmanned aerial vehicle communication protocol is limited by the relation of strength of radio signals, when the radio signals are weak, cracking of the unmanned aerial vehicle communication protocol in the database cannot be completed, defense work is completed, and defense holes can be formed.
To the above-mentioned problem that unmanned aerial vehicle defense appears, there is not the solution at present.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art, and provides a low-altitude unmanned aerial vehicle defense method, a low-altitude unmanned aerial vehicle defense device and a low-altitude unmanned aerial vehicle defense system comprising the low-altitude unmanned aerial vehicle defense device so as to solve the problems in the prior art.
As a first aspect of the present invention, there is provided a low altitude unmanned aerial vehicle defense method, wherein the low altitude unmanned aerial vehicle defense method includes:
acquiring a counter strategy signal issued by an upper computer;
judging whether the countercheck strategy signal is a completely cracked signal;
if the countercheck strategy signal is a complete cracking signal, generating an accurate striking signal;
performing signal processing on the accurate striking signal to obtain an accurate striking amplification signal;
transmitting the precise striking amplification signal;
if the countercheck strategy signal is a non-complete cracking signal, generating a broadband interference signal;
processing the broadband interference signal to obtain a broadband interference amplification signal;
and transmitting the broadband interference amplification signal.
Preferably, the low-altitude unmanned aerial vehicle defense method further comprises the following steps before the step of acquiring the counter strategy signal issued by the upper computer:
receiving a radio signal;
performing signal processing on the radio signal to obtain a processed radio signal;
and sending the processed radio signal to an upper computer so that the upper computer processes the processed radio signal to obtain a counter strategy signal.
Preferably, the performing signal processing on the accurate striking signal to obtain an accurate striking amplification signal includes:
performing digital-to-analog conversion on the accurate striking signal to obtain an accurate striking analog signal;
carrying out up-conversion/filtering processing on the accurate striking analog signal to obtain an accurate striking filtering signal;
and carrying out power amplification processing on the accurate striking filtering signal to obtain an accurate striking amplification signal.
Preferably, the processing the broadband interference signal to obtain a broadband interference amplified signal includes:
performing digital-to-analog conversion on the broadband interference signal to obtain a broadband interference analog signal;
carrying out up-conversion/filtering processing on the broadband interference analog signal to obtain a broadband interference filtering signal;
and performing power amplification processing on the broadband interference filtering signal to obtain a broadband interference amplification signal.
Preferably, the fine percussion amplification signal and the wide-band interference amplification signal can be transmitted in a time-division manner or simultaneously in a frequency-division manner.
As a second aspect of the present invention, there is provided a low altitude unmanned aerial vehicle protection device, wherein the low altitude unmanned aerial vehicle protection device includes:
the system comprises an acquisition module, a comparison module and a processing module, wherein the acquisition module is used for acquiring a counter strategy signal sent by an upper computer;
the judging module is used for judging whether the countercheck strategy signal is a complete cracking signal;
the accurate signal generation module is used for generating an accurate striking signal if the countercheck strategy signal is a complete cracking signal;
the accurate signal processing module is used for carrying out signal processing on the accurate striking signal to obtain an accurate striking amplification signal;
the accurate signal transmitting module is used for transmitting the accurate striking amplification signal;
the broadband signal generation module is used for generating a broadband interference signal if the counter strategy signal is a non-complete cracking signal;
the broadband signal processing module is used for carrying out signal processing on the broadband interference signal to obtain a broadband interference amplification signal;
and the broadband signal transmitting module is used for transmitting the broadband interference amplification signal.
Preferably, the low altitude unmanned aerial vehicle defense apparatus further includes:
a signal receiving module for receiving a radio signal;
the radio signal processing module is used for carrying out signal processing on the radio signal to obtain a processed radio signal;
and the signal sending module is used for sending the processed radio signal to an upper computer so that the upper computer processes the processed radio signal to obtain a counter strategy signal.
As a third aspect of the present invention, a low altitude unmanned aerial vehicle defense system is provided, where the low altitude unmanned aerial vehicle defense system includes an upper computer and the low altitude unmanned aerial vehicle defense device described above, the low altitude unmanned aerial vehicle defense device is in communication connection with the upper computer, and the low altitude unmanned aerial vehicle defense device can acquire a counter policy signal sent by the upper computer, process the counter policy signal, and transmit a precise attack amplification signal or a broadband interference amplification signal according to a processing result.
Preferably, the low-altitude unmanned aerial vehicle defense device can also receive a radio signal, process the radio signal and send the processed radio signal to an upper computer.
Preferably, the upper computer includes:
the characteristic identification module is used for carrying out characteristic identification on the radio signals processed by the low-altitude unmanned aerial vehicle defense device to obtain identification signals;
the cracking module is used for cracking the identification signal to obtain a complete cracking signal or a non-complete cracking signal;
the classification module is used for adding the complete cracking signals into a white list and adding the incomplete cracking signals into a black list;
and the countercheck strategy generation module is used for generating a corresponding countercheck strategy signal according to the white list or the black list.
The low-altitude unmanned aerial vehicle defense method provided by the invention can generate an accurate attack signal or a broadband interference signal according to a counter strategy signal issued by an upper computer, can select different counter modes by judging the actual situation, can cover various types of unmanned aerial vehicles, and can more effectively counter a black-flying unmanned aerial vehicle.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an embodiment of a prior art high power press.
Fig. 2 is a schematic diagram of an embodiment of precise striking in the prior art.
Fig. 3 is a flowchart of a low altitude unmanned aerial vehicle defense method provided by the present invention.
Fig. 4 is a flowchart of an embodiment of the low altitude unmanned aerial vehicle defense method provided by the present invention.
Fig. 5 is a structural block diagram of the low altitude unmanned aerial vehicle defense device provided by the invention.
Fig. 6 is a block diagram of a low altitude unmanned aerial vehicle defense system provided by the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As a first aspect of the present invention, there is provided a low altitude unmanned aerial vehicle defense method, wherein as shown in fig. 3, the low altitude unmanned aerial vehicle defense method includes:
s110, obtaining a counter strategy signal issued by an upper computer;
s120, judging whether the countercheck strategy signal is a completely cracked signal;
s130, if the countercheck strategy signal is a complete cracking signal, generating an accurate striking signal;
s140, performing signal processing on the accurate striking signal to obtain an accurate striking amplification signal;
s150, transmitting the accurate striking amplification signal;
s160, if the countercheck strategy signal is a non-complete cracking signal, generating a broadband interference signal;
s170, performing signal processing on the broadband interference signal to obtain a broadband interference amplification signal;
and S180, transmitting the broadband interference amplification signal.
The low-altitude unmanned aerial vehicle defense method provided by the invention can generate an accurate attack signal or a broadband interference signal according to a counter strategy signal issued by an upper computer, can select different counter modes by judging the actual situation, can cover various types of unmanned aerial vehicles, and can more effectively counter a black-flying unmanned aerial vehicle.
Specifically, the low-altitude unmanned aerial vehicle defense method further comprises the following steps before the step of acquiring a counter strategy signal issued by an upper computer:
receiving a radio signal;
performing signal processing on the radio signal to obtain a processed radio signal;
and sending the processed radio signal to an upper computer so that the upper computer processes the processed radio signal to obtain a counter strategy signal.
It should be understood that the upper computer can process the radio signal to obtain a countermeasure strategy signal, specifically, the upper computer can perform feature recognition on the radio signal, then perform protocol cracking on the signal after the feature recognition, make a corresponding countermeasure strategy by judging a cracking result, if the signal can be completely cracked, then adopt a countermeasure strategy of accurate striking, if the signal is not completely cracked, then adopt a broadband interference signal, and also can perform accurate striking and broadband interference simultaneously in a frequency division section, or perform accurate striking and broadband interference in a time division section.
Specifically, the performing signal processing on the accurate striking signal to obtain an accurate striking amplification signal includes:
performing digital-to-analog conversion on the accurate striking signal to obtain an accurate striking analog signal;
carrying out up-conversion/filtering processing on the accurate striking analog signal to obtain an accurate striking filtering signal;
and carrying out power amplification processing on the accurate striking filtering signal to obtain an accurate striking amplification signal.
Specifically, the processing the broadband interference signal to obtain a broadband interference amplified signal includes:
performing digital-to-analog conversion on the broadband interference signal to obtain a broadband interference analog signal;
carrying out up-conversion/filtering processing on the broadband interference analog signal to obtain a broadband interference filtering signal;
and performing power amplification processing on the broadband interference filtering signal to obtain a broadband interference amplification signal.
Preferably, the fine percussion amplification signal and the wide-band interference amplification signal can be transmitted in a time-division manner or simultaneously in a frequency-division manner.
It should be understood that the signal processing module can be shared for signal processing of the broadband interference signal and for signal processing of the precise striking signal.
Fig. 4 is a flowchart illustrating a specific implementation of the method for defending a low-altitude unmanned aerial vehicle, and it can be seen that after a radio signal is received, LNA low noise processing, down conversion/filtering processing and a/D analog-to-digital conversion processing can be performed on the radio signal, then radio characteristic recognition is performed on the processed signal, and then a counter strategy signal is generated according to a cracking result, that is, if the signal is completely cracked, accurate striking is selected, and if the signal is not completely cracked, broadband striking is selected. For the accurate striking radio signal, the precise striking radio signal is finally transmitted through D/A digital-to-analog conversion, up-conversion/filtering processing and power amplification processing, and similarly, the precise striking radio signal is finally transmitted through D/A digital-to-analog conversion, up-conversion/filtering processing and power amplification processing, so that the effective countermeasures to the black flying unmanned aerial vehicle are realized.
As a second aspect of the present invention, there is provided a low altitude unmanned aerial vehicle protection device 100, as shown in fig. 5, including:
an obtaining module 110, where the obtaining module 110 is configured to obtain a counter policy signal issued by an upper computer;
a judging module 120, where the judging module 120 is configured to judge whether the counter policy signal is a completely cracked signal;
an accurate signal generating module 130, where the accurate signal generating module 130 is configured to generate an accurate striking signal if the counter strategy signal is a complete cracking signal;
the accurate signal processing module 140, the accurate signal processing module 140 is configured to perform signal processing on the accurate striking signal to obtain an accurate striking amplification signal;
an accurate signal transmitting module 150, wherein the accurate signal transmitting module 150 is configured to transmit the accurate striking amplification signal;
a wideband signal generating module 160, where the wideband signal generating module 160 is configured to generate a wideband interference signal if the counter policy signal is a non-complete cracking signal;
the wideband signal processing module 170, where the wideband signal processing module 170 is configured to perform signal processing on the wideband interference signal to obtain a wideband interference amplified signal;
a wideband signal transmitting module 180, wherein the wideband signal transmitting module 180 is configured to transmit the wideband interference amplification signal.
The low-altitude unmanned aerial vehicle defense device provided by the invention can generate an accurate attack signal or a broadband interference signal according to a countercheck strategy signal issued by an upper computer, can select different countercheck modes by judging the actual situation, can cover various types of machines, and can more effectively counter a black-flying unmanned aerial vehicle.
Specifically, the low altitude unmanned aerial vehicle defense device further comprises:
a signal receiving module for receiving a radio signal;
the radio signal processing module is used for carrying out signal processing on the radio signal to obtain a processed radio signal;
and the signal sending module is used for sending the processed radio signal to an upper computer so that the upper computer processes the processed radio signal to obtain a counter strategy signal.
As a third aspect of the present invention, there is provided a low altitude unmanned aerial vehicle defense system, wherein as shown in fig. 6, the low altitude unmanned aerial vehicle defense system 10 includes an upper computer 200 and the aforementioned low altitude unmanned aerial vehicle defense device 100, the low altitude unmanned aerial vehicle defense device 100 is in communication connection with the upper computer 200, and the low altitude unmanned aerial vehicle defense device 100 can acquire a countering policy signal issued by the upper computer 200, process the countering policy signal, and transmit a precise striking amplification signal or a broadband interference amplification signal according to a processing result.
The low-altitude unmanned aerial vehicle defense system provided by the invention can generate an accurate attack signal or a broadband interference signal according to a countercheck strategy signal issued by an upper computer, can select different countercheck modes by judging the actual situation, can cover various types of unmanned aerial vehicles, and can effectively counter a black-flying unmanned aerial vehicle.
Specifically, the low-altitude unmanned aerial vehicle defense device can also receive a radio signal, process the radio signal and send the processed radio signal to an upper computer.
Preferably, as shown in fig. 6, the upper computer 200 includes:
the feature recognition module 210 is used for performing feature recognition on the radio signal processed by the low-altitude unmanned aerial vehicle defense device to obtain a recognition signal;
the cracking module 220 is used for cracking the identification signal to obtain a complete cracking signal or a non-complete cracking signal;
the classification module 230 is configured to add the complete cracking signal to a white list, and add the incomplete cracking signal to a black list;
a counter policy generating module 240, where the counter policy generating module 240 is configured to generate a corresponding counter policy signal according to the white list or the black list.
It can be understood that, with respect to the low altitude unmanned defense system provided by the present invention, reference may be made to the foregoing description of the low altitude unmanned defense method, and details are not described herein again.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A low altitude unmanned aerial vehicle defense method is characterized by comprising the following steps:
acquiring a counter strategy signal issued by an upper computer;
judging whether the countercheck strategy signal is a completely cracked signal;
if the countercheck strategy signal is a complete cracking signal, generating an accurate striking signal;
performing signal processing on the accurate striking signal to obtain an accurate striking amplification signal;
transmitting the precise striking amplification signal;
if the countercheck strategy signal is a non-complete cracking signal, generating a broadband interference signal;
processing the broadband interference signal to obtain a broadband interference amplification signal;
transmitting the broadband interference amplification signal;
the low-altitude unmanned aerial vehicle defense method further comprises the following steps before the step of acquiring the counter strategy signal issued by the upper computer:
receiving a radio signal;
performing signal processing on the radio signal to obtain a processed radio signal;
and sending the processed radio signal to an upper computer so that the upper computer processes the processed radio signal to obtain a counter strategy signal.
2. The method for defending against the low altitude unmanned aerial vehicle of claim 1, wherein the signal processing the precise percussion signal to obtain a precise percussion amplification signal comprises:
performing digital-to-analog conversion on the accurate striking signal to obtain an accurate striking analog signal;
carrying out up-conversion/filtering processing on the accurate striking analog signal to obtain an accurate striking filtering signal;
and carrying out power amplification processing on the accurate striking filtering signal to obtain an accurate striking amplification signal.
3. The method for defending against low altitude unmanned aerial vehicle of claim 1, wherein the signal processing the broadband interference signal to obtain a broadband interference amplification signal comprises:
performing digital-to-analog conversion on the broadband interference signal to obtain a broadband interference analog signal;
carrying out up-conversion/filtering processing on the broadband interference analog signal to obtain a broadband interference filtering signal;
and performing power amplification processing on the broadband interference filtering signal to obtain a broadband interference amplification signal.
4. The defense method for a low altitude unmanned aerial vehicle according to claim 1, wherein the precise percussion amplification signal and the broadband disturbance amplification signal can be transmitted in time intervals or simultaneously in frequency intervals.
5. A low altitude unmanned aerial vehicle defense apparatus, characterized in that the low altitude unmanned aerial vehicle defense apparatus comprises:
the system comprises an acquisition module, a comparison module and a processing module, wherein the acquisition module is used for acquiring a counter strategy signal sent by an upper computer;
the judging module is used for judging whether the countercheck strategy signal is a complete cracking signal;
the accurate signal generation module is used for generating an accurate striking signal if the countercheck strategy signal is a complete cracking signal;
the accurate signal processing module is used for carrying out signal processing on the accurate striking signal to obtain an accurate striking amplification signal;
the accurate signal transmitting module is used for transmitting the accurate striking amplification signal;
the broadband signal generation module is used for generating a broadband interference signal if the counter strategy signal is a non-complete cracking signal;
the broadband signal processing module is used for carrying out signal processing on the broadband interference signal to obtain a broadband interference amplification signal;
the broadband signal transmitting module is used for transmitting the broadband interference amplification signal;
wherein, the unmanned man-machine defense device of low latitude still includes:
a signal receiving module for receiving a radio signal;
the radio signal processing module is used for carrying out signal processing on the radio signal to obtain a processed radio signal;
and the signal sending module is used for sending the processed radio signal to an upper computer so that the upper computer processes the processed radio signal to obtain a counter strategy signal.
6. A low-altitude unmanned aerial vehicle defense system is characterized by comprising an upper computer and the low-altitude unmanned aerial vehicle defense device, wherein the low-altitude unmanned aerial vehicle defense device is in communication connection with the upper computer, and can acquire a counter strategy signal issued by the upper computer, process the counter strategy signal and transmit an accurate striking amplification signal or a broadband interference amplification signal according to a processing result.
7. The defense system for the low altitude unmanned aerial vehicle of claim 6, wherein the defense system for the low altitude unmanned aerial vehicle is further capable of receiving a radio signal, processing the radio signal and sending the processed radio signal to an upper computer.
8. The defense system of the low altitude unmanned aerial vehicle of claim 7, wherein the upper computer comprises:
the characteristic identification module is used for carrying out characteristic identification on the radio signals processed by the low-altitude unmanned aerial vehicle defense device to obtain identification signals;
the cracking module is used for cracking the identification signal to obtain a complete cracking signal or a non-complete cracking signal;
the classification module is used for adding the complete cracking signals into a white list and adding the incomplete cracking signals into a black list;
and the countercheck strategy generation module is used for generating a corresponding countercheck strategy signal according to the white list or the black list.
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| CN111707141A (en) * | 2020-06-29 | 2020-09-25 | 河南天安润信信息技术有限公司 | Counter-control method for remote control signal of unmanned aerial vehicle |
| CN111866456B (en) * | 2020-07-13 | 2022-04-12 | 张恩宇 | Unmanned aerial vehicle tracking and countering method and device |
| CN113259049A (en) * | 2021-06-25 | 2021-08-13 | 南京新频点电子科技有限公司 | Opportunistic array intelligent electronic interference device and interference signal generation method |
| CN113992302A (en) * | 2021-11-02 | 2022-01-28 | 国家电网有限公司 | Unmanned aerial vehicle defense system |
| CN114322668B (en) * | 2021-12-15 | 2024-04-19 | 中国船舶重工集团公司第七0九研究所 | Unmanned aerial vehicle countering auxiliary decision-making method for ground defense |
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