载波相位误差对干涉仪的影响及纠正方法

Influence of Carrier Phase Errors to Interferometer and the Correcting Method

提出了两种干涉仪解模糊算法,在同一角度不同误差水平和不同角度相同误差水平两种情况下,对两种解模糊算法分别进行了蒙特卡罗仿真,结果显示,算法二具有更好的解模糊性能。对算法二在大载波相位误差情况下出现的解模糊错误进行了纠正处理,它不仅可以误别出错误,而且能够重新恢复出正常误差范围内的入射角测量值,从而避免了卡尔曼滤波器发散。

Two ambiguity-resolving algorithms for interferometer are presented.Monte Carlo simulations under different error levels for same incidence angle and same error level for different incidence angles are performed for the two algorithms.The results indicate that,the second algorithm has better ambiguity-resolving performance.To deal with the ambiguity-resolving errors in the second algorithm,a correcting method is introduced,through which the ambiguity-resolving error can be recognized and corrected,and measurements within normal error range is recovered correctly,and the divergence of Kalman filter is avoided.