针对旋转相位干涉仪测角解模糊传统算法在大模糊度时无法正确解算的局限,提出一种基于相位差变化曲线二阶差分信息解模糊的新算法。该方法根据余弦函数的连续性,利用当前点及前两点的鉴相相位差信息,按照最大似然准则,解算出当前点的正确模糊数。仿真结果表明,相比传统算法,该算法解模糊能力大大提高,其正确性和有效性已在工程实际中得到验证。

A new algorithm of solving angle ambiguity of rolling interferometer based on second-order differential information of phase change curve was proposed and induced, considering the limitation of traditional algorithms that are not applicable to severe ambiguity. According to continuity of cosine function and applying the maximum likelihood criterion, the algorithm the discriminator phase difference information of current point and the former two points, correct ambiguity number of current point. The simulation results show that, compared with traditional algorithms, the new algorithm can be applicable to severe ambiguity. orrectness and effectiveness been verified in.