基于方位非均匀采样的多子阵合成孔径声呐波数域成像算法

摘要

采用多接收阵技术的合成孔径声呐成像可以解决测绘速率和分辨率之间的矛盾,但它带来了方位向采样不均匀和不满足停走停假设等问题.文中在分析了多子阵合成孔径声呐方位向的非均匀采样问题的基础上,给出一种可用于方位向非均匀采样多子阵合成孔径声呐的波数域成像算法,仿真和试验均证明了该方法的有效性.%Using the technology of multiple-receiver, synthetic aperture sonar (SAS) with high mapping rate and wide swath became true, however, which brought some new problems, such as non-uniform sampling in azimuth and unfitting the approximation of stop-and-hop. In this paper, a multiple-receiver SAS synthetic aperture sonar wk imaging algorithm is given after analyzing non-uniform sampling issue in azimuth. The simulation and trial results show the validity of this method.