Beidou timing signal simulation output method and system based on security isolation

Abstract

The application provides a safe isolation-based Beidou timing signal analog output method and system. First, the application receives differential correction data stream and Beidou satellite original timing signal and transmits them to a safe isolation environment for fusion to generate a high-precision space-time reference signal. Second, in the safe isolation environment, the high-precision space-time reference signal is calculated into multi-channel analog timing signals for each unmanned aerial vehicle node according to a preset formation and a cooperative flight path. Then, the multi-channel analog timing signals are respectively embedded with the identity codes of the corresponding unmanned aerial vehicles and are subjected to anti-fraud coding. Then, a safe timing signal sequence is generated and is injected into the unmanned aerial vehicle flight control network in a directional manner. Finally, each unmanned aerial vehicle node is synchronized according to the corresponding safe timing signal. The technical scheme provided by the application not only improves the cooperative positioning and synchronous motion precision of the entire unmanned aerial vehicle cluster, but also realizes high-precision safe synchronization of the anti-interference unmanned aerial vehicle cluster.

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