A High-precision Code Phase Measurement Method Based on Phase Strip

After the GNSS (Global Navigation Satellite System) receiver receives the satellite signal, it acquires and tracks the two basic measurement values of code phase and carrier phase. The distance between the satellite and the receiver based on the measured value is calculated. The carrier phase measurement value has a higher measurement accuracy than the code phase measurement value, but because the carrier phase measurement value has the problem of calculating the ambiguity of the whole cycle, actually, the high-precision phase measurement result requires more calculation cost. Therefore, in actual calculations, obtaining a higher-precision code phase measurement result has practical measurement significance. Based on the phase strip technology, this paper proposes a higher-precision code phase measurement method by extracting the cross-correlation power spectrum to obtain a higher-precision code phase measurement value, thereby obtaining a higher-precision code pseudo range measurement result, and verify the effectiveness of this method through actual GNSS signals.