Accurate positioning algorithm for offshore ships under the beidou satellite based augmentation system
Research on the precise positioning algorithm of offshore vessels under the Beidou satellite based augmenta-tion system with the aim of ensuring safe navigation in complex marine environments.This algorithm uses the Beidou satel-lite based enhancement system to correct and enhance the ionospheric delay,satellite orbit position,and clock difference parameters in the single frequency signal of offshore ships,in order to improve the accuracy of offshore ship positioning.Then,the enhanced offshore ship single frequency signal is used as the basis to calculate the position of the offshore ship re-ceiver and obtain accurate offshore ship positioning results.The experimental results show that the root mean square error of this method is always below 6,indicating that it can accurately obtain the positioning results of offshore ships,and can in-crease the actual effective number of Interior Gateway Protocol(IGPs)broadcasted by the Beidou satellite based enhance-ment system.The single frequency signal enhancement effect of offshore ships is good,and the application effect is good.
beidou satellite based augmentation systemoffshore vesselsGEO satellitesingle frequency informa-tion enhancementpositioning calculation
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