基于改进SST算法的宽带信号DOA估计  

Based on Improved SST Algorithm for Estimation of Angles of Arrival of Multiple Wide-band Sources

作　　者：翟丽杰[1] 李志臣[1] 

机构地区：[1]渭南师范学院物理与电气工程学院,渭南714000

出　　处：《科学技术与工程》2012年第23期5771-5774,共4页Science Technology and Engineering

基　　金：陕西省教育厅科学研究项目计划(12JK0672);渭南师范学院研究生项目计划(11YKZ023)资助

摘　　要：信号子空间变换算法(SST)的聚焦矩阵是利用各频率点与参考频点之间信号子空间的关系导出的。针对传统的宽带DOA算法存在的计算复杂度高和估计偏差大的问题,利用聚焦的本质,提出了SST改进算法。改进后算法的性能分析优于传统算法,能正确的分辨出信号的方位,降低了运算量。The focusing matrix of Signal subspace transform algorithm （SST） is derived by using the signal subspace relationship between the frequency and the reference frequency point. In view of the high computational complexity and estimation bias problem by using the traditional broadband DOA algorithm, the improved SST algorithm is proposed. Based on Computer simulations, the signal DOA can be distinguished by the modified SST algorithm with lower computation, and performs better than the conventional SST algorithm in DOA estimation.

关 键 词：波达方向估计 宽带信号 聚焦矩阵 SST算法 

分 类 号：TN911.7[电子电信—通信与信息系统]