A Key Techniques Study For High Resolution Multi-beam Imaging Sonar

This paper based on " 863 " of automatic field "Dam Security detection underwater robot" project, proposed a real-time high-resolution multi-beam sonar system on the basis of parallel topological network of interconnection, and with realizing launching the research work of a series of key technology around the systematic design. The main research include: The performance of the parallel process system to analyze and research; The parallel topological network structure of interconnection, discussed in detail the topological network; By the foundation of interference networks study, carry on the design of multi-DSP nodal sound signal parallel processing system. Then digital interpolation beamforming, pipelined sampled-delay focusing and three digital beamforming technology include Delta-Sigma go on research, Research of the algorithm of real-time focusing delay calculation. Finally used experiment research according to the real survey demand with the designed real-time high-resolution multi-beam sonar.Chapter 1 explained the background that the subject puts forward and the meanings of selected title in part of the introduction, development course and research of reviewing the sonar of the formation of image of high-resolution use the situation, provide the technical indicator of the sonar transducer array, introduce the research of parallel processing technology and current situation of the development in real time, the main research contents of this paper and institutional framework.Qiapter 2 described the characteristic and performance of the high speed digital signal processor, analyzed and researched three kinds of parallel processing system structure based on DSP. On this basis , studied parallel processing technology, analyzed three factors. These three factors include: the process performance of elements, the net structure of paralleling process system and the parallel calculation method. Then studied and analyzed Characteristic and performance of parallel pipeline technology, studied the static topological structure and performance of interference networks. Such three kinds of network structure and performance as the dynamic...