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

Abstract

A method for anti-satellite navigation fraud, the method is as follows: the location information of the starting point and the target point and the information of the prominent position points on the way are stored in the information detection database in advance; when the significant position points are not reached, it is detected whether there is satellite navigation fraud signal, if it reaches the nearest prominent location point, use the pre-stored information data of the prominent location point to correct the inertial navigation until it reaches the target point; if no deceptive signal is detected, then perform image matching when reaching the prominent location point , until the target point; if not matched, capture the current location picture, try manual map matching, if the matching is unsuccessful, return; if the matching is successful, determine the current location, turn on the image matching, and use the prominent location points to correct the inertial navigation until it reaches Target. The unmanned system includes an unmanned aerial system and an unmanned vehicle system using the above-mentioned anti-satellite navigation fraud method. It 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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