KR-20260067152-A - Anti-Drone System and Method using GPS Spoofing Signal

KR20260067152AKR 20260067152 AKR20260067152 AKR 20260067152AKR-20260067152-A

Abstract

The drone protection method using a GPS forged signal according to the present invention may include: a step of obtaining location information for a safety zone that prevents the entry of a drone under surveillance (a protected area); a step of determining a towing zone to which the drone is to be moved; a step of receiving a satellite navigation signal; a step of forging the received satellite navigation signal by adding a positional deviation between the safety zone and the towing zone; and a step of radiating the forged satellite navigation signal to the drone.

Inventors

이지원
김용대
김석태
김태원
김건중
고병성
김재훈
김도현

Assignees

한국전력공사
한국과학기술원

Dates

Publication Date: 20260512
Application Date: 20241105

Claims (12)

A step of obtaining location information for a safety zone that prevents the entry of a monitored drone (a protected area); A step of determining a towing area to move the above drone; Step of receiving satellite navigation signals; A step of forging a received satellite navigation signal by adding a positional deviation between the above-mentioned safety zone and the above-mentioned towing zone; and Step of radiating a forged satellite navigation signal to the drone Drone protection method using GPS forged signals including
In paragraph 1, Prior to the step of obtaining location information for the above-mentioned safety zone, A step to detect intruder drones expected to intrude into the safe zone Drone protection method through GPS forgery signals including further
In paragraph 2, The above safety zone is, It consists of multiple unit safety zones, In the step of detecting the intruding drone mentioned above, A drone protection method using a GPS forged signal that estimates one of the above unit safety zones as the destination of the intruding drone.
In paragraph 3, The positional deviation between the above safety zone and the above towing zone is, A drone protection method using a GPS forged signal determined by the center position of a unit safety zone estimated as a destination and the position deviation of the center position of the towing zone.
In paragraph 1, In the step of forging the received satellite navigation signal, Drone protection method using GPS forged signals that simulate five subframes of a navigation message using actual satellite navigation signals.
In paragraph 1, In the step of forging the received satellite navigation signal, A drone protection method using a GPS forged signal, wherein a gps_task that generates a GPS signal reads out information necessary for generating a GPS signal including satellite orbit information from a received satellite navigation signal, assigns a channel to each satellite, and when a location to be forged is determined, generates a baseband signal corresponding to it and puts it into a FIFO buffer for outputting the forged signal.
A drone monitoring/tracking unit that detects and monitors intruder drones expected to intrude into a safe zone; A zone protection management unit that checks location information for a safety zone (a protected area) that prevents the entry of a drone and designates a towing zone to move the intruding drone; and A forged GPS signal application unit that receives a satellite navigation signal, forges the received satellite navigation signal by adding a positional deviation between the safety zone and the towing zone, and radiates the forged satellite navigation signal to the drone. Drone defense system via GPS forgery signals including
In Paragraph 7, The above safety zone is, It consists of multiple unit safety zones, The aforementioned Zone Protection Management Department, A drone protection system using a GPS forged signal that estimates one of the above unit safety zones as the destination of the intruding drone.
In paragraph 8, The aforementioned Zone Protection Management Department, A drone protection system using GPS spoofing signals that determines the positional deviation between the above-mentioned safety zone and the above-mentioned towing zone as the positional deviation between the center position of the unit safety zone estimated as the destination and the center position of the above-mentioned towing zone.
In Paragraph 7, The above-mentioned counterfeit GPS signal application unit is, Drone protection system using GPS forged signals that simulate five subframes of a navigation message using received actual satellite navigation signals.
In Paragraph 7, The above-mentioned counterfeit GPS signal application unit is, A drone defense system using GPS forged signals, wherein the gps_task that generates GPS signals reads out information necessary for generating GPS signals including satellite orbit information from the received satellite navigation signal, assigns a channel to each satellite, and when a location to be forged is determined, generates a corresponding baseband signal and puts it into a FIFO buffer for outputting the forged signal.
In Paragraph 7, The above-mentioned counterfeit GPS signal application unit is, A GPS receiver that receives real-time satellite navigation signals from GPS satellites; A GPS forgery unit that generates a forged GPS signal by adding the position deviation to the received satellite navigation signal; and A forged signal emitting unit that emits the above forged GPS signal to the intruding drone Drone defense system via GPS forgery signals including

Description

Anti-Drone System and Method using GPS Spoofing Signal The present invention relates to a drone protection method and system for performing safety zone protection through synchronized GPS forged signals, and more specifically, to an anti-drone protection system that generates synchronized GPS forged signals through time synchronization via real-time GPS reception and message synchronization with GPS satellite signals, and based on this, can tow a drone out of a safety zone without the drone entering safety mode. Neutralization technologies for unauthorized intrusion drones can be broadly divided into non-destructive and destructive neutralization technologies. Destructive neutralization technologies include 1) methods of disabling the drone's propellers using nets, 2) methods of neutralizing the drone by damaging its airframe using military weapons such as lasers, and 3) methods utilizing drones that collide directly with the airframe. However, since these destructive neutralization technologies can cause collateral damage to the surroundings, non-destructive neutralization technologies are primarily utilized in major anti-drone systems. Non-destructive neutralization technology is a technology capable of neutralizing a drone's flight without causing physical damage. Representative technologies include: 1) technology that blocks the drone's radio control signals and ground station signals; 2) technology that blocks or spoofs satellite navigation signals (GPS, GLONASS, Galileo, Beidou, etc.); 3) technology that seizes control through hacking the drone system; and 4) technology that disrupts cameras and optical sensors mounted on the drone. Methods utilizing radio jamming are widely used because they allow for immediate response even to drones located at a distance. Unlike conventional anti-drone methods, non-destructive neutralization technology using satellite navigation signals has the advantage of preventing collateral damage caused by drone crashes because it allows for the immediate towing of intruding drones out of the protected zone while still in the air. Existing non-destructive neutralization technologies using satellite navigation signals primarily rely on methods such as jamming to block signals or radiating signals indicating a different location at a higher intensity. However, utilizing these methods causes the GPS receiver to lose-lock, forcing the drone into safe mode. A disadvantage is that once a drone enters safe mode, it no longer uses satellite navigation signals even if the signal is subsequently restored, making it impossible to tow the drone out of the safe zone using these signals. FIG. 1 is a flowchart illustrating an embodiment of a drone protection method using a GPS forged signal according to the concept of the present invention. FIG. 2 is a conceptual diagram specifically illustrating a GPS forgery signal generation algorithm for a drone protection method according to the concept of the present invention. FIG. 3 is a block diagram illustrating an embodiment of a drone protection system using a GPS forged signal according to the concept of the present invention. In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The terms are intended solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. When it is mentioned that a component is connected to or coupled with another component, it can be understood that it may be directly connected to or coupled with that other component, or that there may be other components in between. The terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions may include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not excluding in advance the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. In addition, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation. FIG. 1 is a flowchart illustrating an embodiment of a drone protection method using a GPS forged signal according to the concept of the present invention. A method for protecting a drone using a GPS forged signal may include the steps of: obtaining location information for a protected safe zone (an area subject to protection) that prevents the entry of a drone under surveillance (S420); determining a towing zone to which the