新的空时二维谱估计信号模型  

New signal model and approach for 2-D temporal-spatial spectrum estimation

作　　者：鲍拯[1] 王永良[2] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800 [2]空军雷达学院雷达兵器运用工程军队重点实验室,湖北武汉430010

出　　处：《系统工程与电子技术》2006年第12期1898-1901,共4页Systems Engineering and Electronics

基　　金：国家自然科学基金资助课题(60272086);教育部高等院校青年教师教学科研奖励计划

摘　　要：针对现有空时二维谱估计算法在信号数增大时均不同程度出现性能上的恶化直至失败的问题,总结了目前通用的空时二维谱估计信号模型,提出了“时域副流形”的概念及相应的信号处理方法。该算法通过时域投影对信号进行预处理,先从时域上对信号进行粗分,从而以较小的代价换取大信号数情况下算法性能的改善。理论分析与仿真结果证明了算法的有效性。To solve the problem that the present 2-D temporal-spatial spectrum estimation algorithms are deteriorated when the number of signals become close to the dimension of the array, a kind of new signal model and approach for 2-D temporal - spatial spectrum estimation is proposed. Though the temporal projection, the maximal number of the signals this method can deal with is much more than present algorithms with a small cost. Simulation results are demonstrate the performance of the proposed algorithm.

关 键 词：阵列信号处理 空时二维谱估计 MUSIC 时域投影 

分 类 号：TN911.23[电子电信—通信与信息系统]