多子阵合成孔径声呐成像研究  

Research on multi-receiver synthetic aperture sonar imaging

作　　者：许稼[1] 彭应宁[1] 王秀坛[1] 夏香根 

机构地区：[1]清华大学电子工程系,北京100084 [2]Department of ECE, University of Delaware

出　　处：《清华大学学报（自然科学版）》2004年第4期515-518,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(60128102)

摘　　要：针对多子阵合成孔径声呐(SAS)成像运算量大及忽略相位误差导致的成像效果不佳等缺点,该文在深入分析了多子阵SAS的两类系统相位误差基础上,分别提出了改进的逐点和逐线成像算法,形成了新的多子阵SAS系统方案设计。新方法在提高测绘率同时,能够显著降低运算量并改善成像效果,仿真实验也证明了新方法的正确性。Multi-receiver synthetic aperture sonar (SAS) requires a large amount of computations for the imaging and the imaging effect is often unsatisfactory due to uncorrected phase errors. Two kinds of inherent phase errors were analyzed to develop improved line-by-line and dot-by-dot multi-receiver SAS imaging algorithms with a new multi-receiver SAS design. This design increases the average coverage rate and remarkably reduces the computations while improving the imaging quality. Simulation results have validated the two algorithms and the new design.

关 键 词：信号声学 多子阵合成孔径声呐 等效相位中心 逐点成像算法 逐线成像算法 海洋探测 

分 类 号：TN912.16[电子电信—通信与信息系统] TB566[电子电信—信息与通信工程]