并行处理技术在高分辨率成像声纳中的应用

Parallel Signal Processing Technique for High-Resolution Imaging Sonar

针对堤坝安全探测及海洋开发等水下探测任务,设计并实现了一种具有较高分辨率的水下成像声纳系统。由于成像声纳具有数据吞吐量和运算量庞大的特性,系统采用9片高性能信号处理芯片TMS320C6416并行完成实时数字信号处理任务。配合适当的并行处理算法,系统具有高速稳定的特点,不仅可以探测江、河、湖泊及水库的堤坝表面裂痕,还可以探测水雷、沉船等水下可疑物体。经过多次水池试验及外场试验的验证,系统具有较好的成像效果及较高的可靠性。

An underwater acoustic imaging sonar with high-resolution is designed to fulfill the dyke safety detection tasks and ocean exploitation tasks. Due to the data throughput and the calculation amount of the imaging sonar are larger, nine high performance digital signal proces- sors （TMS320C6416） are used in parallel. With the appropriate algorithm on DSPs, the system has the characteristics of the high speed and stabilization. So the system can detect the crack of the dykes on the river and the reservoir, and has the ability to detect the mine or the sinking ship. By pool examination and outfield examination, the system has the definite imaging effect and the high reliability.