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Anti-spoofing autonomous judgment method for UAV positioning information when the link fails

A technology for link failure and positioning information, which is applied in the directions of measuring devices, instruments, surveying and mapping and navigation, etc., can solve the problem of false navigation information interference of drones, and achieve the effect of improving the utilization rate of airborne resources

Active Publication Date: 2017-01-11
北京北航天宇长鹰无人机科技有限公司
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Problems solved by technology

[0003] As mentioned in the previous paragraph, on the one hand, from a technical point of view, since the GPS signal can be intercepted and cracked, when the link fails, the system loop is "unmanned", and there is a possibility that the UAV will be interfered by false navigation information

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  • Anti-spoofing autonomous judgment method for UAV positioning information when the link fails
  • Anti-spoofing autonomous judgment method for UAV positioning information when the link fails
  • Anti-spoofing autonomous judgment method for UAV positioning information when the link fails

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Embodiment Construction

[0051] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] The self-judging method for anti-spoofing of UAV positioning information when the link fails in the present invention, the process is as follows figure 1 shown, including the following steps:

[0053] The first step is information planning of flight segments before flight;

[0054] Set the starting point of the flight segment as the from point, and the arrival point as the arrival point. According to the route planning requirements, set N waypoints on the air segment, and N is greater than or equal to 2;

[0055] Construct flight segment planning table T1: flight segment planning table T1 includes the waypoint number, longitude, latitude, and altitude of each waypoint, for example, the flight segment planning table including the from-point waypoint and the to-point waypoint is shown in Table T1 :

[0056] Table T1 flight segment plan...

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Abstract

The invention discloses an automatic anti-cheating judgment method for unmanned aerial vehicle positioning information in a link failure process. The automatic anti-cheating judgment method comprises the following steps: step 1, planning flight front leg information; step 2, carrying out data acquisition on waypoint coordinate information and carrying out table T1 information matching; step 3, extracting surface feature angular point characteristics and position elevation information in flight and matching task load planning information with landform information; step 4, calculating a weighting coefficient and a matching threshold value according to a work condition information table T4; and step 5, carrying out weighting calculation and judging whether cheat exists or not. The automatic anti-cheating judgment method integrates onboard multi-sensor information and improves the utilization rate of onboard resources. The automatic anti-cheating judgment method establishes a composite information model and improves the safety of an unmanned aerial vehicle.

Description

technical field [0001] The invention belongs to the technical field of autonomous control and image processing of drones, and specifically relates to a method for autonomously judging false positioning information of drones when a link fails, which can be used for drones to prevent location information deception to make up for "unmanned" aspects. insufficient. Background technique [0002] At present, related technologies such as unmanned aerial vehicle systems and informatization are in continuous development. Unmanned aerial vehicles have a wide range of use values ​​in both military and civilian applications, and the application scenarios are becoming more complex and changeable. In order to realize the autonomous flight of UAVs, navigation equipment is required to improve real and reliable spatial position information. Among them, if the data link communication is normal, although there is "no one" on board, the entire UAV system loop is "manned". If it is larger, manu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/00
CPCG01C21/00G01C21/20
Inventor 向锦武丁文锐康传波李红光刘硕
Owner 北京北航天宇长鹰无人机科技有限公司
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