Anti-satellite navigation fraud method and unmanned system based on the method

Abstract

An anti-satellite navigation fraud method is as below: storing positional information of a starting point and a target point and information of prominent position points on the road into an information detection library in advance; when the prominent position points are not reached, detecting the presence of satellite navigation deception signal; if navigation deception signal exists, when a nearest prominent position point is reached, rectifying the deviation of inertial navigation by using the information data of the pre-stored prominent position points until the target point is reached; if navigation deception signal does not exist, when the prominent position point is reached, conducting image matching until the target point is reached; if not matched, shooting the current position picture, trying artificial map-matching; if the matching is unsuccessful, returning; if the matching is successful, determining the current position, starting image matching, rectifying the deviation of inertial navigation by using prominent positions, until the target point is reached. The unmanned system comprises an unmanned aerial vehicle system and an unmanned vehicle system using the above anti-satellite navigation fraud method. The invention has the advantages of good anti-satellite navigation fraud effect and simple and practical method.

Description

technical field [0001] The invention belongs to the field of navigation and positioning, and in particular relates to a method for anti-satellite navigation fraud and an unmanned system based on the method. Background technique [0002] At present, the navigation systems of unmanned vehicles and UAVs are highly dependent on satellite positioning signals, and are easily affected by enemy interference and spoofing signals, which may cause them to be easily captured or disabled, which threatens the GPS-based navigation. For example, in 2011, Iran first used satellite navigation spoofing technology to reconstruct the GPS coordinates of the receiver, and successfully captured the RQ170 "Sentinel" drone of the United States. In the field of civil aviation, if the GPS navigation coordinates are reconstructed, it is very likely that the aircraft will deviate and cause a major flight accident. This makes civil aviation have technical loopholes that are extremely easy to be exploited ...

AI Technical Summary

Problems solved by technology

The anti-fraud technology of UAVs started relatively late in domestic counterparts, and most of them focus on the theory and technology of how to encrypt the data link, which is far behind foreign countries.

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