子孔径拼接测量基本算法与迭代算法的性能比较研究

Comparative Study on the Performance of Basic Algorithm and Iterative Algorithm for Subaperture Stitching Interferometry

从原理上对子孔径拼接的基本算法与迭代算法即SASL算法进行了比较分析,提出利用SASL算法中重叠计算子问题的求解方法来确定基本算法中的重叠对应关系,并对两种算法的性能进行了对比研究。结果表明SASL算法对于子孔径的对准误差更不敏感,拼接测量结果更为可靠,且适用于平面、球面和非球面。

The basic algorithm and the iterative one,i.e.,the subaperture stitching location (SASL) algorithm are comparatively analyzed in principle.The solution method for overlapping mathematical operators in the SASL algorithm is proposed to determine the overlapping correspondence in the basic algorithm.Theperformance of the two algorithms is compared through subaperture stitching experiments.The results show that the SASL algorithm is less sensitive to the alignment error of subapertures,leading to more reliable measurement results.The SASL algorithm can be applied to flats,spheres and aspheres.