WO2021117971A1 - Système de brouillage anti-drone et procédé associé - Google Patents

Système de brouillage anti-drone et procédé associé Download PDF

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Publication number
WO2021117971A1
WO2021117971A1 PCT/KR2019/018753 KR2019018753W WO2021117971A1 WO 2021117971 A1 WO2021117971 A1 WO 2021117971A1 KR 2019018753 W KR2019018753 W KR 2019018753W WO 2021117971 A1 WO2021117971 A1 WO 2021117971A1
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Prior art keywords
signal
drone
jamming
radio wave
antenna
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PCT/KR2019/018753
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English (en)
Korean (ko)
Inventor
안승열
황선우
강순도
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다인시스템(주)
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Priority claimed from KR1020190162856A external-priority patent/KR102243150B1/ko
Priority claimed from KR1020190162855A external-priority patent/KR102231282B1/ko
Priority claimed from KR1020190162854A external-priority patent/KR102223024B1/ko
Application filed by 다인시스템(주) filed Critical 다인시스템(주)
Publication of WO2021117971A1 publication Critical patent/WO2021117971A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures

Definitions

  • the present invention relates to an ultra-light anti-drone jamming system and method, and more particularly, to transmit a jamming signal to the anti-drone by analyzing radio waves generated from the anti-drone. That is, the present invention relates to an ultra-light anti-drone jamming system and method capable of neutralizing an anti-drone by transmitting a jamming signal to the anti-drone.
  • the present invention relates to a broadband anti-drone jamming system and method, and more particularly, to transmit a jamming signal to a non-standard anti-drone by analyzing a radio wave generated from a non-standard anti-drone in a wide band. That is, the present invention relates to a broadband anti-drone jamming system and method capable of neutralizing a non-standard anti-drone by transmitting a jamming signal to a non-standard anti-drone.
  • the present invention relates to a multi-pattern anti-drone jamming system and method, and more particularly, to transmit a jamming signal to a non-standard anti-drone by analyzing a radio wave generated from a non-standard anti-drone in a wide band. That is, the present invention relates to a multi-pattern anti-drone jamming system and method capable of neutralizing a non-standard anti-drone by transmitting a jamming signal to a non-standard anti-drone.
  • a drone which is an unmanned aerial vehicle, is a flying vehicle that is remotely controlled from the ground without a pilot boarding the vehicle directly, and can float in the air by the rotation of a propeller, and can be flown by induction of radio waves.
  • Drones are designed to be easily controlled remotely from a distance, and with the development of wireless technology, drones, which are small wireless reconnaissance flying objects owned by individuals, not for military use, have recently been commercially available and used.
  • Drones are operated so that they can fly with cameras installed for purposes such as firefighting or approaching disaster areas, capturing terrain information, broadcasting, and military use.
  • anyone can easily fly a drone and send it to an inaccessible place, so there is always a risk of falling and accidents, and the functional characteristics of drones developed for military use can be abused for crime or terrorism.
  • Korean Patent Laid-Open Publication No. 10-2017-0126224 disables anti-drone intruding without permission in a specific area in advance, but in particular, it detects a signal for anti-drone control and transmits a blocking signal to neutralize the signal.
  • an anti-drone blocking system that provides the construction of a strong anti-drone defense facility has been studied, but this system has the disadvantage of being heavy to carry.
  • a band including a synchronization signal and a PBCH (Physical Broadcast Channel) signal is identified for each band of an LTE signal, and a center frequency of the jamming signal is set.
  • PBCH Physical Broadcast Channel
  • an object of the present invention is to generate a jamming signal by receiving only radio waves generated from a non-standard anti-drone, and to generate a jamming signal by distinguishing a non-standard anti-drone transmission signal from a transmission signal from a non-standard anti-drone controller to increase the efficiency of jamming It is another object to provide a broadband anti-drone jamming system and method.
  • an object of the present invention is to generate a jamming signal by receiving and analyzing only radio waves generated by a non-standard anti-drone, and by transmitting only a pattern effective for jamming of an anti-drone among various multi-pattern anti-drone jamming to increase the efficiency of jamming
  • Another object is to provide a system and method.
  • An ultra-light anti-drone jamming system includes an antenna for transmitting and receiving radio waves, a radio wave receiving unit for receiving radio waves from the antenna, a control unit for generating a jamming signal by analyzing the received signal of the radio wave receiving unit, a radio wave transmitting unit for transmitting the radio wave of the jamming signal, and a battery for supplying power to the radio wave receiving unit, the control unit, and the radio wave transmitting unit.
  • the antenna may form at least one radiation pattern of directional and non-directional.
  • a directional or non-directional radiation pattern may be formed respectively or simultaneously according to the gain and phase of the array antenna.
  • the controller may control the radiation pattern of the antenna to extract the radiation frequency of the anti-drone from the received signal.
  • controller may control the radiation pattern of the antenna to extract the distance to the anti-drone.
  • the radio wave transmitter may transmit a jamming signal in the form of a pulse.
  • the controller may control the power of the jamming signal according to the distance from the anti-drone.
  • the controller may control the directing width of the radiation pattern according to the distance from the anti-drone.
  • An ultra-light anti-drone jamming method includes a radio wave reception step of receiving a radio wave from a radio wave receiving unit, a radio wave analysis step of analyzing the received radio wave in a control unit to generate a jamming signal, and a radio wave transmitting unit It may include a radio wave transmission step of transmitting radio waves in the .
  • the broadband anti-drone jamming system includes an antenna for transmitting and receiving radio waves, a radio wave receiving unit for receiving radio waves from the antenna, a signal processing unit for analyzing the received signal of the radio wave receiving unit to perform signal processing, and a jamming signal generated by the signal processing unit. It may include a radio wave transmitter for transmitting radio waves.
  • the antenna may form at least one radiation pattern of directional and non-directional.
  • a directional or non-directional radiation pattern may be formed respectively or simultaneously according to the gain and phase of the array antenna.
  • the signal processing unit may control the radiation pattern of the antenna to extract the radiation frequency of the non-standard anti-drone from the received signal.
  • the signal processing unit may extract the distance to the non-standard anti-drone by controlling the radiation pattern of the antenna.
  • the signal processing unit may determine that a signal directly received by the antenna for at least two received signals is a transmission signal of the anti-drone, and a signal received by reflection may be determined as a transmission signal of the anti-drone controller.
  • the signal processing unit may determine a relatively large signal as a transmission signal of the anti-drone with respect to the at least two received signals and determine a relatively small signal as a transmission signal of the anti-drone controller.
  • the signal processing unit determines that a signal inversely proportional to the distance to the anti-drone is the anti-drone transmission signal, and a constant signal regardless of the distance to the anti-drone is the anti-drone controller's transmission signal.
  • the signal processing unit may determine that a signal having a relatively small time occupancy with respect to the at least two received signals is a transmission signal of the anti-drone, and a signal having a relatively large time occupancy may be determined as a transmission signal of the anti-drone controller.
  • the signal processing unit may transmit an impulse signal to the anti-drone when there is no signal received from the anti-drone and anti-drone controller.
  • a broadband anti-drone jamming method includes a radio wave receiving step of receiving a radio wave in a radio wave receiving unit, a signal processing step of analyzing a received signal of the radio wave receiving unit to perform signal processing, and a jamming signal generated by the signal processing unit It may include a radio wave transmission step of transmitting a radio wave of
  • a multi-pattern anti-drone jamming system includes an antenna for transmitting and receiving radio waves, a radio wave receiving unit for receiving radio waves from the antenna, a multi pattern generating unit for analyzing the received signal of the radio wave receiving unit and generating a multi pattern, and a multi pattern generating unit It may include a radio wave transmitter that transmits any one of the generated multi-patterns.
  • the antenna may form at least one radiation pattern of directional and non-directional.
  • a directional or non-directional radiation pattern may be formed respectively or simultaneously according to the gain and phase of the array antenna.
  • the multi-pattern generator may control the radiation pattern of the antenna to extract the radiation frequency of the non-standard anti-drone from among the received signals.
  • the multi-pattern generator may control the radiation pattern of the antenna to extract the distance to the non-standard anti-drone.
  • the multi-pattern generator includes a single frequency (continuous wave) jamming signal, an impulse jamming signal, a multi-tone jamming signal, a ramp jamming signal, a sweep jamming signal, and a noise (noise). ) may generate at least one of the jamming signals.
  • the multi-pattern generator may analyze whether the received signal corresponds to either a time division signal or a frequency division signal.
  • the multi-pattern generator may analyze whether the received signal corresponds to any one of a multi-carrier signal, a phase-modulated signal, a frequency-modulated signal, and an amplitude-modulated signal.
  • the multi-pattern generator may analyze the image provided from the camera to detect the flight shape of the anti-drone.
  • the multi-pattern generating unit may analyze whether the flight form corresponds to any one of a turn, a fall, a sharp turn, an overturn, a sharp rise, and a return.
  • the multi-pattern generator may adjust the transmission output of the radio wave transmitter with a gain control jamming signal according to a flight shape.
  • the multi-pattern generating unit may generate a multi-pattern by combining multi-patterns according to a flight form.
  • a multi-pattern anti-drone jamming method includes a radio wave receiving step of receiving a radio wave in a radio wave receiving unit, a multi pattern generating step of analyzing a received signal of the radio wave receiving unit and generating a multi pattern, and a multi pattern generating unit It may include a radio wave transmission step of transmitting any one of the generated multi-patterns.
  • the ultra-light anti-drone jamming system and method according to the present invention generates a jamming signal by receiving only radio waves generated by the anti-drone, and reduces the power consumption of the jamming signal, thereby reducing the battery capacity, thereby making it easy to carry.
  • the broadband anti-drone jamming system and method according to the present invention generates a jamming signal by receiving only radio waves generated by a non-standard anti-drone, and generates a jamming signal by distinguishing a non-standard anti-drone transmission signal from a transmission signal of a non-standard anti-drone controller This has the advantage of increasing the jamming efficiency.
  • the multi-pattern anti-drone jamming system and method according to the present invention generates a jamming signal by receiving and analyzing only radio waves generated by non-standard anti-drones, and transmits only patterns effective for jamming of anti-drones among various multi-patterns to improve jamming efficiency. has the advantage of increasing
  • FIG. 1 is a block diagram illustrating an ultra-light anti-drone jamming system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating in detail a radiation pattern of a transmission signal radiated from the antenna of FIG. 1 .
  • FIG. 3 is a detailed diagram illustrating an array antenna generating the radiation pattern of FIG. 2 .
  • FIG. 4 is a signal waveform showing the difference in frequency characteristics of a reception signal according to the antenna characteristics of FIG. 1 in detail.
  • FIG. 5 is a signal waveform showing a difference in received signal power according to the antenna characteristics of FIG. 1 in detail.
  • FIG. 6 is a signal waveform illustrating a jamming signal transmitted from the antenna of FIG. 1 .
  • FIG. 7 is a diagram illustrating a change in a radiation pattern according to power of a transmission signal radiated from the antenna of FIG. 1 .
  • FIG. 8 is a diagram illustrating a change in a radiation pattern according to a radiation directing width of a transmission signal radiated from the antenna of FIG. 1 .
  • FIG. 9 is a flowchart illustrating an ultra-light anti-drone jamming method according to an embodiment of the present invention.
  • FIG. 10 is a block diagram illustrating a broadband anti-drone jamming system according to another embodiment of the present invention.
  • FIG. 11 is a diagram illustrating in detail a radiation pattern of a transmission signal radiated from the antenna of FIG. 10 .
  • FIG. 12 is a diagram illustrating in detail an array antenna generating the radiation pattern of FIG. 11 .
  • FIG. 13 is a signal waveform illustrating in detail a difference in a received signal frequency characteristic according to the antenna characteristic of FIG. 10 .
  • FIG. 14 is a signal waveform detailing a difference in received signal power according to the antenna characteristics of FIG. 10 .
  • FIG. 15 is a signal waveform illustrating in detail a difference in reception paths between the transmission signal of the anti-drone and the transmission signal of the anti-drone controller received from the antenna of FIG. 10 .
  • FIG. 16 is a signal waveform detailing a difference in reception level between an anti-drone transmission signal and an anti-drone controller transmission signal received from the antenna of FIG. 10 .
  • FIG. 17 is a signal waveform detailing the difference in reception level change according to the distance of the anti-drone with respect to the transmission signal of the anti-drone and the transmission signal of the anti-drone controller received from the antenna of FIG. 10 .
  • FIG. 18 is a signal waveform detailing the difference in radio occupancy time according to time with respect to the transmission signal of the anti-drone and the transmission signal of the anti-drone controller received from the antenna of FIG. 10 in detail.
  • FIG. 19 is a detailed signal waveform showing an impulse signal transmitted from the antenna of FIG. 10 .
  • FIG. 20 is a flowchart illustrating a broadband anti-drone jamming method according to another embodiment of the present invention.
  • 21 is a block diagram illustrating a multi-pattern anti-drone jamming system according to another embodiment of the present invention.
  • FIG. 22 is a diagram illustrating in detail a radiation pattern of a transmission signal radiated from the antenna of FIG. 21 .
  • FIG. 23 is a detailed diagram illustrating an array antenna generating the radiation pattern of FIG. 22 .
  • FIG. 24 is a signal waveform detailing a difference in a received signal frequency characteristic according to the antenna characteristic of FIG. 21 .
  • FIG. 25 is a signal waveform showing a difference in received signal power according to the antenna characteristics of FIG. 21 in detail.
  • FIG. 26 is a signal waveform detailing the types of multi-patterns transmitted by the antenna of FIG. 21 .
  • FIG. 27 is a signal waveform detailing the time and frequency division method of the anti-drone received by the antenna of FIG. 21 .
  • FIG. 28 is a signal waveform detailing the types of modulation schemes of the anti-drone received by the antenna of FIG. 21 .
  • 29 is a diagram illustrating in detail a pattern analyzing the effect of the anti-drone observed in the camera of FIG. 21 on jamming.
  • FIG. 30 is a signal waveform showing a gain control jamming signal transmitted from the antenna of FIG. 21 in detail.
  • FIG. 31 is a signal waveform detailing an example of a combination of multi-pattern signals transmitted from the antenna of FIG. 21 .
  • 32 is a flowchart illustrating a multi-pattern anti-drone jamming method according to another embodiment of the present invention.
  • FIG. 1 is a block diagram showing an ultra-light anti-drone jamming system according to an embodiment of the present invention
  • FIGS. 2 to 8 are detailed diagrams and signal waveforms for explaining FIG. 1 in detail.
  • FIGS. 1 to 8 an ultra-light anti-drone jamming system according to an embodiment of the present invention may be described with reference to FIGS. 1 to 8 .
  • an ultra-light anti-drone jamming system includes an antenna 1100 for transmitting and receiving radio waves, a radio wave receiving unit 1200 for receiving radio waves from the antenna 1100, and a radio wave receiving unit 1200 ) by analyzing the received signal to generate a jamming signal, a control unit 1300 , a radio wave transmitting unit 1400 for transmitting a radio wave of the jamming signal, and a radio wave receiving unit 1200 , a control unit 1300 , and power to the radio wave transmitting unit 1400 ) It consists of a battery 1500 that supplies
  • the antenna 1100 has a structure that can control directivity and omni-directionality, and through this, the frequency and distance of the anti-drone can be accurately measured by removing ambient noise.
  • the controller 1300 analyzes the signal of the anti-drone to control the radiation pattern and power according to the distance of the anti-drone, and transmits a pulse-type jamming signal with a reduced transmission time, thereby reducing battery power. By minimizing the power, it is possible to manufacture an ultra-light anti-drone jamming system.
  • FIG. 2 is a diagram illustrating in detail a radiation pattern of a transmission signal radiated from the antenna 1100 of FIG. 1 .
  • the antenna 1100 may form a radiation pattern such as directional or non-directional.
  • the radio wave receiving unit 1200 simultaneously receives the radio wave received in the anti-drone direction and ambient noise through the omni-directional antenna and the directional antenna, and analyzes a frequency with a large size of the radio wave received in the anti-drone direction. .
  • an angle at which the concentrated radiation pattern R1300 is divided compared to the transmission direction of the radiation pattern with respect to the concentrated radiation pattern R1300 in which power is concentrated is called a half maximum angle R1220, and the radiation of the concentrated radiation pattern R1300
  • the width can be expressed as an anterior angle (R1210).
  • the anterior angle R1210 may be separately received by signal processing in the radio wave receiver 1200 .
  • the size of the radio wave transmitter 1400 that transmits the jamming signal can be reduced by generating and transmitting a jamming signal by selecting only a frequency in the anti-drone direction without analyzing multiple frequencies using this radiation pattern.
  • FIG. 3 is a detailed view showing the array antenna 1110 generating the radiation pattern of FIG. 2 .
  • a directional or non-directional radiation pattern may be formed respectively or simultaneously according to the gain and phase of the array antenna 1110 .
  • the antenna 1100 is composed of a plurality of array antennas 1110 , and a radiation pattern radiated from the antenna 1100 according to the spacing between the array antennas 1110 and the signal phase and signal size of each of the array antennas 1110 . this is decided
  • At this time, at least two received signal combining units (not shown) that combine the received signal phase and the received signal magnitude of the array antenna 1110 may be provided in the radio wave receiving unit 1200, and depending on the combination method of each received signal combining unit Since directivity and non-directionality can be simultaneously received from one antenna 1100 , the size of the antenna 1100 can be reduced.
  • FIG. 4 is a signal waveform showing a difference in frequency characteristics of a reception signal according to characteristics of the antenna 1100 of FIG. 1 in detail.
  • the controller 1300 may control the radiation pattern of the antenna 1100 to extract the radiation frequency of the anti-drone from among the received signals.
  • FIG. 4 (a) is a signal waveform showing the reception signal frequency characteristic when the antenna 1100 is omni-directional
  • FIG. 4 (b) is a signal waveform showing the reception signal frequency characteristic when the antenna 1100 is directional. to be.
  • the frequency spectrum R1400 versus the frequency spectrum R1400 may be extracted by filtering the drone-generated frequency spectrum R1410 , which is a signal additionally appearing in the directivity characteristics of the antenna 1100 , by the radio wave receiver 1200 .
  • FIG. 5 is a signal waveform illustrating in detail a difference in received signal power according to the characteristics of the antenna 1100 of FIG. 1 .
  • the controller 1300 may control the radiation pattern of the antenna 1100 to extract the distance to the anti-drone.
  • FIG. 5 (a) is a signal waveform showing the received signal power when the antenna 1100 is omni-directional
  • FIG. 5 (b) is a signal waveform showing the received signal power when the antenna 1100 is directional.
  • the control unit 1300 can extract the distance of the anti-drone by converting the received signal of the antenna 1100 into a distance and analyzing it. This is compared to the received power distribution R1500, which is the omnidirectional characteristic signal of the antenna 1100 .
  • the drone-generated power distribution R1510 which is a signal additionally appearing in the directivity characteristic of 1100 , may be extracted by filtering the radio wave receiver 1200 .
  • FIG. 6 is a signal waveform illustrating a jamming signal transmitted from the antenna 1100 of FIG. 1 .
  • the radio wave transmitter 1400 may transmit a jamming signal in the form of a pulse.
  • FIG. 6(a) and 6(b) show the pulse shape of the same power per unit time
  • FIG. 6(a) is a signal waveform showing a low-power high-speed pulse
  • FIG. 6(b) is a high-power low-speed signal. It is a signal waveform representing a pulse.
  • the radio wave transmitter 1400 can save the power of the battery 1500 by transmitting radio waves with respect to the frequency received by the anti-drone, but not continuously, but in the form of a pulse. Accordingly, the low-power high-speed pulse signal R1610 and the high-power low-speed pulse signal R1620 can be used separately, and in addition, the battery capacity can be effectively used to manufacture an ultra-light anti-drone jamming system.
  • FIG. 7 is a diagram illustrating a change in a radiation pattern according to power of a transmission signal radiated from the antenna 1100 of FIG. 1 .
  • the controller 1300 may control the power of the jamming signal according to the distance from the anti-drone.
  • the high-power radiation pattern R1120 is used, and when the reception strength is large, the anti-drone is close.
  • the jamming signal of the same size is affected regardless of the distance of the anti-drone, thereby effectively using the battery capacity, thereby making it possible to manufacture an ultra-light anti-drone jamming system.
  • FIG. 8 is a diagram illustrating a change in a radiation pattern according to a radiation directional width of a transmission signal radiated from the antenna 1100 of FIG. 1 .
  • the controller 1300 may control the directional width of the radiation pattern according to the distance from the anti-drone.
  • the directivity width of the antenna it is possible to adjust the directivity width depending on whether there is an anti-drone at a long distance or when there is a near field.
  • FIG. 9 is a flowchart illustrating an ultra-light anti-drone jamming method according to an embodiment of the present invention.
  • the ultra-light anti-drone jamming system receives a radio wave from the radio wave receiver 1200 ( S1100 ), and analyzes the received radio wave in the controller 1300 to generate a jamming signal ( S1200 ) , and transmitting the generated jamming signal from the radio wave transmitter 1400 ( S1300 ).
  • the antenna 1100 has a structure that can control directivity and omni-directionality, and through this, the frequency and distance of the anti-drone can be measured.
  • control unit 1300 analyzes the signal of the anti-drone to control the radiation pattern and power according to the distance of the anti-drone, and transmits a jamming signal in the form of a pulse to reduce battery power. , has the effect of making an ultra-light anti-drone jamming system.
  • the ultra-light anti-drone jamming system and method according to the present invention has the advantage of generating a jamming signal by receiving only radio waves generated by the anti-drone, and reduces the power consumption of the jamming signal, thereby reducing the battery capacity, thereby making it easy to carry. have.
  • FIG. 10 is a block diagram showing a wideband anti-drone jamming system according to another embodiment of the present invention, and FIGS. 11 to 19 are detailed diagrams and signal waveforms for explaining FIG. 10 in detail.
  • FIGS. 10 to 19 a broadband anti-drone jamming system according to an embodiment of the present invention may be described with reference to FIGS. 10 to 19 .
  • a broadband anti-drone jamming system includes an antenna 2100 for transmitting and receiving radio waves, a radio wave receiving unit 2200 for receiving radio waves from the antenna 2100, and a radio wave receiving unit 2200 ) includes a signal processing unit 2300 that performs signal processing by analyzing the received signal, and a radio wave transmission unit 2400 that transmits a radio wave of the jamming signal generated by the signal processing unit 2300 .
  • the antenna 2100 has a structure that can control directivity and omni-directionality, and through this, the frequency and distance of a non-standard anti-drone can be accurately measured by removing ambient noise.
  • the signal processing unit 2300 analyzes the signal of the non-standard anti-drone and uses at least one of the methods mentioned in FIGS. 15 to 10 to distinguish the transmission signal from the non-standard anti-drone from the non-standard anti-drone controller and jamming By generating the signal, there is an advantage in that the jamming signal can be effectively generated.
  • FIG. 11 is a diagram illustrating in detail a radiation pattern of a transmission signal radiated from the antenna 2100 of FIG. 10 .
  • the antenna 2100 may form a radiation pattern such as directional or non-directional.
  • the radio wave receiving unit 2200 simultaneously receives ambient noise and radio waves received from the non-standard anti-drone direction through the omni-directional antenna and the directional antenna, and analyzes the frequency with a large size of the radio wave received from the non-standard anti-drone direction.
  • the angle at which the concentrated radiation pattern R2300 is divided compared to the transmission direction of the radiation pattern with respect to the concentrated radiation pattern R2300 in which the power is concentrated is called the half maximum angle R2220, and the radiation of the concentrated radiation pattern R2300 The width may be expressed as an anterior angle R2210.
  • the anterior angle R2210 may be separately received by signal processing in the radio wave receiving unit 2200 .
  • FIG. 12 is a detailed diagram illustrating the array antenna 2110 generating the radiation pattern of FIG. 11 .
  • a directional or non-directional radiation pattern may be formed respectively or simultaneously according to a gain and a phase of the array antenna 2110 .
  • the antenna 2100 is composed of a plurality of array antennas 2110, and a radiation pattern radiated from the antenna 2100 according to the spacing between the array antennas 2110 and the signal phase and signal size of each of the array antennas 2110. this is decided
  • At this time, at least two received signal combining units (not shown) that combine the received signal phase and the received signal magnitude of the array antenna 2110 may be provided in the radio wave receiving unit 2200, and depending on the combination method of each received signal combining unit Since directivity and omnidirectionality can be simultaneously received from one antenna 2100 , the size of the antenna 2100 can be reduced.
  • FIG. 13 is a signal waveform showing a difference in frequency characteristics of a reception signal according to characteristics of the antenna 2100 of FIG. 10 in detail.
  • the signal processing unit 2300 may control the radiation pattern of the antenna 2100 to extract the radiation frequency of the non-standard anti-drone from among the received signals.
  • FIG. 13 (a) is a signal waveform showing the reception signal frequency characteristic when the antenna 2100 is omni-directional
  • FIG. 13 (b) is a signal waveform showing the reception signal frequency characteristic when the antenna 2100 is directional. to be.
  • the drone-generated frequency spectrum R2410 which is a signal additionally appearing in the directivity characteristics of the antenna 2100 compared to the reception frequency spectrum R2400, may be extracted by filtering the radio wave receiver 2200 .
  • FIG. 14 is a signal waveform showing a difference in received signal power according to the characteristics of the antenna 2100 of FIG. 10 in detail.
  • the signal processing unit 2300 may control the radiation pattern of the antenna 2100 to extract the distance to the non-standard anti-drone.
  • FIG. 14(a) is a signal waveform showing the received signal power when the antenna 2100 is omni-directional
  • FIG. 14(b) is a signal waveform showing the received signal power when the antenna 2100 is directional.
  • the signal processing unit 2300 can extract the distance of the non-standard anti-drone by converting the received signal of the antenna 2100 into a distance and analyzing it, which is the received power distribution (R2500), which is the non-directional characteristic signal of the antenna 2100.
  • the drone-generated power distribution R2510 which is a signal additionally appearing in the directivity characteristic of the contrast antenna 2100, may be extracted by filtering the radio wave receiving unit 2200.
  • FIG. 15 is a signal waveform detailing a difference in reception path between the transmission signal of the anti-drone 2500 and the transmission signal of the anti-drone controller 2600 received from the antenna 2100 of FIG. 10 .
  • the signal processing unit 2300 determines that the signal directly received by the antenna 2100 for at least two received signals is the transmitted signal of the anti-drone 2500, and the signal received by reflection is It may be determined by the transmission signal of the drone controller 2600 .
  • the anti-drone 2500 is generally located in the air, and since it is located at the antenna 2100 and a line of sight (LOS), the anti-drone transmission signal R2610 transmitted from the anti-drone 2500 is directly received.
  • LOS line of sight
  • the anti-drone controller 2600 is located on the ground, and most of it can be located in the antenna 2100 and the NLOS (Non-Line Of Sight), so the anti-drone controller transmission signal (R2620) transmitted from the anti-drone controller 2600 may have many reflected signals.
  • the jamming signal is divided and generated, efficiently This has the advantage of generating a jamming signal.
  • FIG. 16 is a signal waveform detailing the difference in reception level between the transmission signal of the anti-drone 2500 received from the antenna 2100 of FIG. 10 and the transmission signal of the anti-drone controller 2600 of FIG. 10 .
  • the signal processing unit 2300 determines that a relatively large signal with respect to at least two received signals is a transmission signal of the anti-drone 2500, and a relatively small signal is a signal of the anti-drone controller 2600. It can be determined by the transmitted signal.
  • Figure 16 (a) shows the time characteristics of the anti-drone transmission signal (R2710) and the anti-drone controller transmission signal (R2720).
  • the anti-drone transmission signal (R2710) is received relatively larger than the anti-drone controller transmission signal (R2720).
  • 16(b) also shows the time characteristics of the anti-drone transmission signal R2740 and the anti-drone controller transmission signal R2750.
  • the anti-drone transmission signal R2740 is relative to the anti-drone controller transmission signal R2750. It is a signal waveform indicating that it is received largely by
  • the anti-drone 2500 is generally located in the air, is located at the antenna 2100 and a Line Of Sight (LOS), and is located closer than the anti-drone controller 2600, so the noise signal R2700 in time characteristics ), the received anti-drone transmission signal (R2710) can be received larger than the anti-drone controller transmission signal (R2720), and the received anti-drone transmission signal (R2740) after removing the noise signal (R2730) in frequency characteristics. may be received larger than the anti-drone controller transmission signal R2750.
  • LOS Line Of Sight
  • the anti-drone controller 2600 is located on the ground, and most can be located between the antenna 2100 and the NLOS (Non-Line Of Sight), and the distance from the antenna 2100 is also relatively far compared to the anti-drone 2500.
  • a signal transmitted from the drone controller 2600 may be received by the antenna 2100 in a small amount.
  • a relatively large signal with respect to at least two received signals determines a signal directly received by the antenna 2100 as a transmission signal of the anti-drone 2500, and a relatively small signal as a transmission signal of the anti-drone controller 2600
  • the jamming signal can be efficiently generated by determining and generating the jamming signal separately.
  • 17 is a signal showing in detail the difference in reception level change according to the distance of the anti-drone 2500 with respect to the transmission signal of the anti-drone 2500 received from the antenna 2100 of FIG. 10 and the transmission signal of the anti-drone controller 2600 of FIG. is a waveform.
  • the signal processing unit 2300 determines that a signal inversely proportional to the distance from the anti-drone 2500 with respect to at least two received signals is a transmission signal of the anti-drone 2500, and the anti-drone 2500 ) may be determined as a transmission signal of the anti-drone controller 2600 regardless of the distance to the constant signal.
  • FIG. 17 (a) is a signal waveform showing the anti-drone transmission signal R2810 according to the distance between the anti-drone 2500 and the antenna 2100
  • FIG. 17 (b) is a signal waveform between the anti-drone 2500 and the antenna 2100. This is a signal waveform indicating the anti-drone controller transmission signal R2820, which has no level depending on the distance.
  • the anti-drone transmission signal R2810 received from the antenna 2100 may be received large when the distance between the anti-drone 2500 and the antenna 2100 is close, and can be received small when far away.
  • the anti-drone controller transmission signal R2820 since the position of the anti-drone controller transmission signal R2820 is fixed, the same signal may be received regardless of the movement of the anti-drone 2500 .
  • the anti-drone controller transmission signal By judging by (R2820) and separately generating the jamming signal, there is an advantage in that the jamming signal can be efficiently generated.
  • 18 is a signal waveform detailing the difference in radio occupancy time according to time for the transmission signal of the anti-drone 2500 and the transmission signal of the anti-drone controller 2600 received from the antenna 2100 of FIG. 10 in detail.
  • the signal processing unit 2300 determines that a signal having a relatively small time occupancy with respect to at least two received signals is a transmission signal of the anti-drone 2500, and a signal having a relatively large time occupancy is the anti-drone signal. It may be determined by the transmission signal of the drone controller 2600 .
  • FIG. 18(a) shows an anti-drone controller transmission signal R2920 transmitted from the anti-drone controller 2600 to the anti-drone 2500 over time
  • FIG. 18(b) is an anti-drone controller from the anti-drone 2500. It is a signal waveform showing the anti-drone transmission signal R2930 transmitted to 2600 .
  • the anti-drone controller 2600 since the anti-drone controller 2600 must continuously control the posture of the anti-drone 2500, a signal to control the anti-drone 2500 is transmitted at a new time, while the anti-drone 2500 is the anti-drone controller 2600. Since only a signal such as ACK for the control of can be transmitted, the time occupancy may be relatively small.
  • the time occupancy of the anti-drone transmission signal R2930 may be greater than that of the anti-drone controller transmission signal R2920, but it can be determined with reference to the characteristics of FIGS. 15 to 17 . have.
  • a signal having a relatively small time occupancy is determined as the transmission signal of the anti-drone 2500
  • a signal having a relatively large time occupancy is the transmission signal of the anti-drone controller 2600 .
  • the jamming signal can be efficiently generated by determining and generating the jamming signal separately.
  • FIG. 19 is a detailed signal waveform showing an impulse signal transmitted from the antenna 2100 of FIG. 10 .
  • the signal processing unit 2300 may transmit an impulse signal to the anti-drone 2500 when there is no signal received from the anti-drone 2500 and the anti-drone controller 2600 .
  • the anti-drone 2500 can perform autonomous driving using GPS, optical navigation, or a camera. There is no frequency at which a jamming signal can be transmitted.
  • frequency when transmitting a temporally short signal, frequency can be occupied in a wide band.
  • electromagnetic waves may affect the anti-drone 2500 to destroy the electronic circuit of the anti-drone 2500, and if there is a receiving antenna, it may directly affect the receiving unit. have.
  • the electronic circuit of the anti-drone 2500 has the effect of disabling it.
  • FIG. 20 is a flowchart illustrating a broadband anti-drone jamming method according to another embodiment of the present invention.
  • the broadband anti-drone jamming method includes the steps of receiving a radio wave from the radio wave receiving unit 2200 ( S2100 ), analyzing the received signal of the radio wave receiving unit 2200 and performing signal processing ( S2200 ) , and transmitting the radio wave of the jamming signal generated by the signal processing unit 2300 ( S2300 ).
  • the antenna 2100 has a structure that can control directivity and omni-directionality, and through this, the frequency and distance of a non-standard anti-drone can be accurately measured by removing ambient noise.
  • the signal processing unit 2300 analyzes the signal of the non-standard anti-drone in the signal processing step (S2200) and generates a jamming signal by distinguishing the transmission signal of the non-standard anti-drone from the transmission signal of the non-standard anti-drone controller, thereby effectively generating a jamming signal. It has the advantage of being able to transmit.
  • the broadband anti-drone jamming system and method according to the present invention has the advantage of generating a jamming signal by receiving only radio waves generated by the non-standard anti-drone, and by distinguishing the non-standard anti-drone transmission signal from the non-standard anti-drone controller transmission signal. There is an advantage of increasing jamming efficiency by generating a jamming signal.
  • FIG. 21 is a block diagram illustrating a multi-pattern anti-drone jamming system according to an embodiment of the present invention
  • FIGS. 22 to 31 are detailed diagrams and signal waveforms for explaining FIG. 21 in detail.
  • FIGS. 21 to 31 a multi-pattern anti-drone jamming system according to an embodiment of the present invention may be described with reference to FIGS. 21 to 31 .
  • a multi-pattern anti-drone jamming system includes an antenna 3100 for transmitting and receiving radio waves, a radio wave receiving unit 3200 for receiving radio waves from the antenna 3100, and a radio wave receiving unit It consists of a multi-pattern generation unit 3300 that analyzes the received signal of 3200 and generates a multi-pattern, and a radio wave transmitter 3400 that transmits any one of the multi-patterns generated by the multi-pattern generation unit 3300 .
  • the multi-pattern generator 3300 may analyze the image provided from the camera 3500 to detect the flight shape of the anti-drone.
  • the antenna 3100 has a structure that can control directivity and omnidirectionality, and through this, the frequency and distance of the non-standard anti-drone can be accurately measured by removing ambient noise.
  • the multi-pattern generation unit 3300 may transmit an appropriate anti-drone jamming signal by analyzing the signal of the non-standard anti-drone, and in particular, by analyzing the flight shape of the drone through the camera 3500, gain control of the jamming signal
  • an appropriate anti-drone jamming signal by analyzing the signal of the non-standard anti-drone, and in particular, by analyzing the flight shape of the drone through the camera 3500, gain control of the jamming signal.
  • FIG. 22 is a diagram illustrating in detail a radiation pattern of a transmission signal radiated from the antenna 3100 of FIG. 21 .
  • the antenna 3100 may form a radiation pattern such as directional or non-directional.
  • the radio wave receiving unit 3200 simultaneously receives ambient noise and radio waves received from the non-standard anti-drone direction through the omni-directional antenna and the directional antenna, and analyzes the frequency with a large size of the radio wave received from the non-standard anti-drone direction.
  • an angle at which the concentrated radiation pattern R3300 is divided compared to the transmission direction of the radiation pattern with respect to the concentrated radiation pattern R3300 in which power is concentrated is called a half maximum angle R3220, and the radiation of the concentrated radiation pattern R3300
  • the width may be expressed as an anterior angle (R3210).
  • the anterior angle R3210 may be separately received by signal processing in the radio wave receiving unit 3200 .
  • FIG. 23 is a detailed view showing the array antenna 3110 generating the radiation pattern of FIG. 22 .
  • a directional or non-directional radiation pattern may be formed respectively or simultaneously according to the gain and phase of the array antenna 3110 .
  • the antenna 3100 is composed of a plurality of array antennas 3110 , and a radiation pattern radiated from the antenna 3100 according to the spacing between the array antennas 3110 and the signal phase and signal size of each of the array antennas 3110 . this is decided
  • At this time, at least two received signal combining units (not shown) that combine the received signal phase and the received signal magnitude of the array antenna 3110 may be provided in the radio wave receiving unit 3200, and depending on the combination method of each received signal combining unit Since directivity and non-directionality can be simultaneously received from one antenna 3100 , the size of the antenna 3100 can be reduced.
  • FIG. 24 is a signal waveform showing a difference in frequency characteristics of a reception signal according to characteristics of the antenna 3100 of FIG. 21 in detail.
  • the multi-pattern generator 3300 may control the radiation pattern of the antenna 3100 to extract the radiation frequency of the non-standard anti-drone from among the received signals.
  • Figure 24 (a) is a signal waveform showing the received signal frequency characteristic when the antenna 3100 is omni-directional
  • Figure 24 (b) is a signal waveform showing the reception signal frequency characteristic when the antenna 3100 is directional to be.
  • the drone-generated frequency spectrum R3410 which is a signal additionally appearing in the directivity characteristic of the antenna 3100 compared to the reception frequency spectrum R3400, may be extracted by filtering the radio wave receiving unit 3200.
  • 25 is a signal waveform detailing a difference in received signal power according to the characteristics of the antenna 3100 of FIG. 21 .
  • the multi-pattern generating unit 3300 may extract a distance to a non-standard anti-drone by controlling the radiation pattern of the antenna 3100 .
  • FIG. 25 (a) is a signal waveform showing the received signal power when the antenna 3100 is omni-directional
  • FIG. 25 (b) is a signal waveform showing the received signal power when the antenna 3100 is directional.
  • the multi-pattern generating unit 3300 can extract the distance of the non-standard anti-drone by converting the received signal of the antenna 3100 into a distance and analyzing it, which is the received power distribution (
  • the drone-generated power distribution R3510 which is a signal additionally appearing in the directivity characteristic of the antenna 3100 compared to R3500), may be extracted by filtering the radio wave receiver 3200 .
  • FIG. 26 is a signal waveform showing in detail the types of multi-patterns transmitted by the antenna 3100 of FIG. 21 .
  • the multi-pattern generating unit 3300 includes a single frequency (continuous wave) jamming signal (R3610), an impulse jamming signal (R3620), and a multi-tone jamming signal (R3630). ), a ramp jamming signal R3640 , a sweep jamming signal R3650 , and a noise jamming signal R3660 may be generated.
  • the single frequency (continuous wave) jamming signal R3610 uses a single frequency continuously, and when it is the same frequency as the anti-drone, the amplification rate of the anti-drone's reception amplifier is lowered, thereby affecting the signal reception of the anti-drone controller. If the frequency is somewhat distant from the anti-drone, it may affect the carrier synchronization between the anti-drone and the anti-drone controller, thereby affecting the signal reception of the anti-drone controller.
  • the impulse jamming signal may give a temporary failure to the anti-drone, and the anti-drone may not be able to perform normal operation during the time for the anti-drone to recover from an error, so the power for transmitting the jamming signal can be reduced.
  • the magnitude of the impulse jamming signal R3620 is large, there is an effect that may destroy the reception amplifier of the anti-drone.
  • the multi-tone jamming signal R3630 has an advantage in that it can affect not only one frequency but also several frequencies when the anti-drone uses a technique such as frequency hopping.
  • the ramp jamming signal R3640 can adjust the size of a specific multi-pattern according to the distance of the anti-drone, thereby maximizing power efficiency.
  • the sweep jamming signal R3650 has an effect of swept frequencies over the entire band when a frequency that may interfere with the anti-drone is uncertain.
  • the noise jamming signal R3660 has an effect of increasing the noise level of the receiving amplifier of the anti-drone to affect the signal reception of the anti-drone controller.
  • FIG. 27 is a signal waveform detailing the time and frequency division method of the anti-drone received by the antenna 3100 of FIG. 21 .
  • the multi-pattern generator 3300 may analyze whether the received signal corresponds to either a time division signal or a frequency division signal.
  • the multi-pattern generation unit 3300 transmits the jamming signal only at the time when the time division transmission signal R3710 or the time division reception signal R3720 is located, so that the transmission power transmitted from the radio wave transmission unit 3400 can be used efficiently.
  • the jamming signal is transmitted only to the time division reception signal R3720, so that the transmission power can be used more efficiently.
  • the multi-pattern generation unit 3300 transmits the jamming signal only at the frequency at which the frequency division transmission signal R3730 or the frequency division reception signal R3740 is located, so that the transmission power transmitted from the radio wave transmission unit 3400 can be used efficiently.
  • the jamming signal is transmitted only to the frequency division reception signal R3740, and the transmission power can be used more efficiently.
  • FIG. 28 is a signal waveform detailing the types of modulation schemes of the anti-drone received by the antenna 3100 of FIG. 21 .
  • the multi-pattern generation unit 3300 receives a multi-carrier signal (R3810), a phase modulated signal (R3820), a frequency modulated signal (R3830), and an amplitude modulated signal ( R3840), it can be analyzed whether it corresponds to any one of the above.
  • the received signal waveform uses a multi-carrier in the case of a multi-carrier signal (R3810), a single-frequency (continuous wave) jamming signal (R3610), a multi-tone jamming signal (R3630) , and a multi-tone jamming signal R3630 among the sweep jamming signals R3650 may be effective to simultaneously affect multiple carriers.
  • the received signal waveform is the phase modulated signal R3820, all bands are simultaneously received, so the sweep jamming signal R3650 that affects the carrier phase synchronization rather than the multi-tone jamming signal R3630 ) or a noise jamming signal R3660 that increases the noise level of the anti-drone reception amplifier may be more effective.
  • the sweep jamming signal R3650 may be effective to use the sweep jamming signal R3650 so that the received signal waveform affects the frequency synchronization in the case of the frequency modulated signal R3830.
  • the amplitude modulation signal R3840 it may be effective to continuously transmit a single frequency (continuous wave) jamming signal R3610 to affect the amplitude.
  • 29 is a diagram illustrating in detail a pattern in which the effect of the anti-drone observed in the camera 3500 of FIG. 21 on jamming is analyzed.
  • the multi-pattern generation unit 3300 may analyze whether the flight form corresponds to any one of rotation, fall, sharp turn, overturning, sharp rise, and return.
  • FIG. 30 is a signal waveform showing in detail the gain control jamming signal R3900 transmitted from the antenna 3100 of FIG. 21 .
  • the multi-pattern generator 3300 may adjust the transmission output of the radio wave transmitter 3400 with the gain control jamming signal R3900 according to the flight shape.
  • FIG. 31 is a signal waveform showing a detailed example of a combination of multi-pattern signals transmitted from the antenna 3100 of FIG. 21 .
  • the multi-pattern generating unit 3300 may generate a multi-pattern by combining multi-patterns according to a flight form.
  • 32 is a flowchart illustrating a multi-pattern anti-drone jamming method according to another embodiment of the present invention.
  • the multi-pattern anti-drone jamming method includes the steps of receiving a radio wave from the radio wave receiving unit 3200 (S3100), analyzing the received signal of the radio wave receiving unit 3200, and generating a multi pattern (S3200) ), and transmitting the radio wave of any one of the multi-patterns generated by the multi-pattern generating unit 3300 ( S3300 ).
  • an appropriate anti-drone jamming signal can be transmitted by analyzing the non-standard anti-drone signal, and in particular, by analyzing the flight shape of the drone through the camera 3500, gain control of the jamming signal is performed.
  • a jamming signal can be effectively generated by transmitting a plurality of multi-patterns.
  • the multi-pattern anti-drone jamming system and method according to the present invention has the advantage of generating jamming signals by receiving and analyzing only radio waves generated by non-standard anti-drones, and transmitting only patterns effective for jamming of anti-drones among various multi-patterns This has the advantage of increasing the jamming efficiency.
  • the present invention relates to an ultra-light anti-drone jamming system and method, and can be used in the field of anti-drone.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

La présente invention concerne : un système ultra-léger de brouillage anti-drone et un procédé associé, le système étant facile à transporter au moyen de la réception uniquement d'ondes radio générées par un anti-drone, de manière à générer un signal de brouillage, et au moyen de la réduction de la consommation d'énergie du signal de brouillage, de façon à réduire la capacité de la batterie ; un système de brouillage anti-drone à large bande et un procédé associé, qui génèrent des signaux de brouillage ne recevant que des ondes radio générées par des anti-drones non standard et qui génèrent des signaux de brouillage en divisant un signal de transmission anti-drone non standard et un signal de transmission du dispositif de commande anti-drone non standard de façon à augmenter l'efficacité du brouillage ; et un système de brouillage anti-drone à motifs multiples et un procédé associé, qui génèrent des signaux de brouillage ne recevant et n'analysant que les ondes radio générées par des anti-drones non standard et qui ne transmettent que des motifs efficaces pour le brouillage de l'anti-drone parmi divers motifs multiples, de façon à augmenter l'efficacité de brouillage.
PCT/KR2019/018753 2019-05-10 2019-12-30 Système de brouillage anti-drone et procédé associé WO2021117971A1 (fr)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
KR20190055057 2019-05-10
KR20190055058 2019-05-10
KR20190055056 2019-05-10
KR1020190162856A KR102243150B1 (ko) 2019-05-10 2019-12-09 멀티 패턴 안티 드론 재밍 시스템 및 방법
KR10-2019-0162855 2019-12-09
KR1020190162855A KR102231282B1 (ko) 2019-05-10 2019-12-09 광대역 안티 드론 재밍 시스템 및 방법
KR10-2019-0162854 2019-12-09
KR1020190162854A KR102223024B1 (ko) 2019-05-10 2019-12-09 초경량 안티 드론 재밍 시스템 및 방법
KR10-2019-0162856 2019-12-09

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CN117675089A (zh) * 2023-12-14 2024-03-08 江苏君立华域信息安全技术股份有限公司 一种窄带无人机通讯干扰装置及其干扰方法

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KR20190108292A (ko) * 2018-03-14 2019-09-24 국방과학연구소 재밍 전력 연산 장치 및 방법

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KR101682090B1 (ko) * 2016-01-28 2016-12-02 엘아이지넥스원 주식회사 미상 신호를 이용한 재밍 신호 출력 제어 장치 및 방법
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CN114301571B (zh) * 2022-02-14 2024-03-12 中国人民解放军陆军工程大学 一种多旋翼无人机反制方法及系统
CN117675089A (zh) * 2023-12-14 2024-03-08 江苏君立华域信息安全技术股份有限公司 一种窄带无人机通讯干扰装置及其干扰方法

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