Detection and correction of interferometer ambiguity-resolving abnormal value

Aiming at solving frequent outlier of ambiguity-resolving algorithm used in phase interferometer under large phase noise between channels, an ambiguity-resolving error correction method is proposed using limited memory algorithm. The method estimates the initial value of angle and integer cycle ambiguity value by utilizing primary ambiguity-resolving results obtained from successive angle algorithm, calculates recursively the angle and integer cycle ambiguity value based on limited memory algorithm and identifies the abnormal values from original measured angle data. Therefore, the sporadic and continuous ambiguity-resolving error could be rectified to ensure the accuracy of data processing. Simulation results show that limited memory error correction algorithm could effectively correct the error of fuzzy angle and reduce the error probability of ambiguity-resolving. Also, the proposed method might have certain guiding significance to other phase interferometer systems.