一种利用LLI参数改进TurboEdit北斗周跳探测的方法OA

To solve the missing detection and false detection defects of the traditional TurboEdit cycle slip detection method,this study proposes an improved method(TurboEdit+LLI)integrating the loss of lock indicator(LLI)from the original BeiDou observation data.This method captures the loss-of-lock epoch of the signal in real time through LLI and defines the cycle slip existence interval.Accurate detection of the cycle slip of BeiDou signals is achieved in combination with TurboEdit.The reliability of this method is verified using multiple types of receivers and precision single-point positioning experiments.The results show that the accuracy of TurboEdit+LLI for cycle slip detection is significantly improved.Specifically,for the flagship receiver SEPT POLARX5,the number of false detections of cycle slip decreased from 1 807 to 25.In the static positioning mode,TurboEdit+LLI has comparable positioning accuracy in the east(E),north(N),and up(U)directions to TurboEdit and LLI methods.Under simulated kinematic positioning conditions,for some stations such as CIBG,the positioning accuracy in the E,N,and U directions is improved by 36.4%,59.3%,and 55.9%respectively compared to TurboEdit,and by 43.5%,7.7%,and 31.5%respectively compared to LLI,effectively improving the positioning performance in complex scenarios.