摘要
针对现有以常规波束形成技术为基础的多波束测深算法中存在空间分辨率不足的问题,将子空间类高分辨算法MUSIC应用到国产多波束测深系统中,探索提高多波束系统空间分辨力的方法。对MUSIC算法原理进行了数学表达式推导和性能分析,并通过计算机仿真、湖上试验数据处理验证了本算法能降低回波到达角度的估计误差,有效地提高了空间方位估计精度,具有实际应用的可行性。
According to the insufficiency of the spatial resolution of bathymetry algorithm based on the multibeam echo sounder at present, the subspace high resolution algorithm is used in multibeam sounding system of China, and the method of improving the spatial resolution of the multibeam system is explored. The mathematical expression is derived and the performance is theoretically analyzed for the principles of the high resolution algorithm.The simulation data and the lake experiment data are processed, and the results prove that this algorithm not only reduces the estimation error of DOA of echo signal, but also improves the resolution of the terrain estimation, and is practical and valid for actual application.
出处
《海洋测绘》
CSCD
2017年第1期43-46,共4页
Hydrographic Surveying and Charting
关键词
多波束测深
多波束测深系统
波束形成
分裂子阵技术
高分辨海底探测算法
multibeam echosounding
multibeam sounding system
beamforming
split subarray technique
high resolution submarine detection algorithm
