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A spoofed recognition method for UAV navigation data based on satellite communication

An identification method and navigation data technology, applied in satellite radio beacon positioning system, navigation through speed/acceleration measurement, navigation and other directions, can solve the problems of position deviation, inability to distinguish position changes, inability to know the exact position of the aircraft, etc.

Active Publication Date: 2017-11-07
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

If the airborne navigation data is subject to deceptive interference, such as interference with the airborne satellite navigation data, when the interference adopts progressive interference, even the inertial navigation with integrated navigation cannot distinguish the position caused by the flight of the UAV. change, or positional deviation due to spoofing interference
After the navigation system is disturbed, the ground will not be able to know the exact location of the aircraft. The ground personnel may see that the aircraft is flying towards the local airport, but in fact the aircraft has landed far away from the local airport and landed at another airport. How to identify whether the navigation is deceived on the ground? problems that must be solved

Method used

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  • A spoofed recognition method for UAV navigation data based on satellite communication
  • A spoofed recognition method for UAV navigation data based on satellite communication
  • A spoofed recognition method for UAV navigation data based on satellite communication

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Embodiment Construction

[0021] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0022] The present invention is a method for recognizing that UAV navigation data is deceived based on satellite communication, such as figure 1 shown, including the following steps:

[0023] Step 1: Establish the geocentric coordinate system, body coordinate system, and earth coordinate system related to the UAV;

[0024] Let the longitude and latitude of the aircraft be θ LatJ , the longitude of the satellite Earth radius R e , the height from the plane to the ground is h, the height from the satellite to the ground is H, and the distance from the satellite to the plane is D.

[0025] Let the geocentric coordinate system be O(x e ,y e ,z e ),like figure 2 As shown, among them, O e The origin is the center of the earth, x e The axis points to true north through the center of the earth, y e The axis points due east through the center of...

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Abstract

The invention discloses a method for identifying the fraudulent navigation data of an unmanned aerial vehicle based on satellite communication. The transformation relationship between them; Step 3: Track the satellite according to the UAV antenna tracking error voltage to obtain the azimuth and pitch angle of the satellite under the body coordinates; Step 4: Measure the azimuth, pitch angle, and roll of the body according to the inertial navigation Calculate the geodetic azimuth and pitch angle of the satellite in the geodetic coordinate system of the aircraft location; Step 5: According to the geodetic azimuth and pitch angle of the satellite in the geodetic coordinate system of the aircraft location, inversely deduce the longitude and latitude θLat of the aircraft ; This method uses the existing satellite communication system to identify the navigation data being deceived without adding other auxiliary equipment.

Description

technical field [0001] The invention relates to a satellite communication-based identification method for unmanned aerial vehicle navigation data being deceived, belonging to the technical field of unmanned aerial vehicle navigation anti-spoofing. Background technique [0002] UAVs are smart devices. Since no one is on the UAV, the ground completely depends on the navigation data carried by the receiver to determine the specific location of the UAV. Commonly used UAVs use a combination of inertial navigation and satellite navigation for navigation. . It can provide high-precision and stable position navigation data by using the characteristics of inertial navigation that is not susceptible to interference and satellite navigation with high precision. If the airborne navigation data is subject to deceptive interference, such as interference with the airborne satellite navigation data, when the interference adopts progressive interference, even the inertial navigation with in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/21G01S19/47G01C21/16G01C21/20
CPCG01C21/165G01C21/20G01S19/21G01S19/47
Inventor 曾国奇向锦武赵民强
Owner BEIHANG UNIV
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