An ambiguity-resolving error correction method of interferometer based on limited memory algorithm

A limited memory algorithm-based ambiguity error correction method for solving the frequent error of ambiguity-resolving algorithm in phase interferometer under large phase error between channels is proposed. In this method, results of successive recursive ambiguity-resolving algorithm are used to estimate the initial value of angle and the integer cycle ambiguity value, and to recure the angle and the integer cycle ambiguity value with limited memory. The method can identify and correct the ambiguity-resolving error of angle-measuring data, thus ensuring the processing accuracy of following angle data. Simulation results show that the limited memory error correction algorithm can effectively solve the problem of fuzzy angle error and reduce the interferometer ambiguity-resolving error probability. This method also has certain guiding significance for the other phase interferometer systems.