Cycle-slip automatic detection and processing strategy for dynamic PPP

Cycle-slip Automatic detection and accurate estimation is a key but difficult problem in dynamic PPP.A new method for detecting and locating the cycle-slip is presented by utilizing the L1,L2,L4,L5and Doppler observations.If the cycle slip is detected accurately,the corresponding satellite is treated as a new rising satellite,so its ambiguities must be re-initialized.The advantage of the processing strategy is that dynamic PPP precision is stable if the number of the satellites is no less than four,because integer slip cycles needn't be calculated and repaired which is very difficult in dynamic PPP.The shipborne experimental results show that dynamic PPP precision reaches 0.1~0.2meters by taking the double difference baseline length as a reference on the heavy dynamic environment condition.