Carrier phase measurement methods to relieve half Fuzzy

Proposed present invention provides a carrier phase ambiguity measuring half releasing method using the carrier Doppler information L1-C / A code of the L2-P (Y) code to capture the carrier frequency, is extracted from the L1-C / A code time for the L2-P (Y) code and the code phase; L2-P (Y) code tracking process after the cut successfully captured: the symbol by the receiver header L1-C / a code, and Doppler information carrier L1- demodulation code stream W⊕D P (Y) code to assist in tracking and carrier-phase measurements L2-P (Y) code, the auxiliary eliminated by L1 L2-P (Y) dynamic carrier Doppler, code Doppler Le dynamics and L2-P (Y) signal in the data stream brought W⊕D inversion, while to ensure L2-P (Y) carrier binding L2-P (Y) integral with the symbol values ​​by L1 auxiliary leg the phase measurement values ​​for a half cycle ambiguity. The present invention improves the acquisition and tracking performance L2-P (Y) code, and problems due to the Costas phase-locked loop has L2-P (Y) phase of the multi-value of 180 ° results in a code carrier-phase measurement half cycle ambiguity.