Real-Time Cycle Slip Detection and Repair Method for BDS-3 Five-Frequency Data

Theoretically, five-frequency observations can form combined with longer wavelength, smaller ionospheric delay and noise, which may improve the performance of cycle slip detection repair. Four geometry-free phase combinations one pseudorange combination are formed to detect repair slips in real time. Firstly, high-quality three, four five frequencies discussed, then optimal selected slips. Secondly, is linearly independent above added ensure that all be detected. Thirdly, a real-time algorithm based on LAMBDA search method deduced. The has been tested by using BDS-3 undifferenced data, even under condition active low sampling interval. results showed proposed capable detecting repairing simulated carriers