Instantaneous Triple‐Frequency GPS Cycle‐Slip Detectionand Repair

Abstract

A real‐time algorithm to detect, determine, and validate the cycle‐slips for triple‐frequency GPS is proposed. The cycle‐slip detection is implemented by simultaneously applying two geometry‐free phase combinations in order to detect more insensitive cycle‐slips, and it is applicable for high data rate applications. The cycle‐slip determination adaptively uses the predicted phase data and the code data. LAMBDA technique is applied to search for the cycle‐slip candidates. The cycle‐slip validation provides strict test criteria to identify the cycle‐slip candidates under low phase noise. The reliability of the proposed algorithms is tested in different simulated scenarios.