冲击噪声背景下宽频段信号三维参数的估计  

Joint estimation of 3-D parameters of wide-band signals in impulsive noise

作　　者：沈齐[1] 杜刚[1,2] 姜新迎[2] 

机构地区：[1]空军装备研究院雷达所,北京100085 [2]空军工程大学导弹学院,陕西三原713800

出　　处：《系统工程与电子技术》2010年第3期487-490,共4页Systems Engineering and Electronics

摘　　要：提出了一种基于协变异矩阵的宽频段信号频率和二维到达角联合估计的算法。在冲击噪声环境下,该算法能精确地估计宽频段信号的三维参数,无需多维谱峰搜索和参数配对过程。另外,利用L型阵列的分维特点和ESPRIT算法进一步处理,成功地实现了具有频率兼并现象的宽频段信号的三维参数估计。计算机仿真结果验证了算法的有效性。The paper presents a new covariation matrix-based method for joint estimation of frequency and 2-D arrival angles of wide-band signals.In the impulsive noise,the algorithm can precisely estimate 3-D parameters of wide-band signals.Getting rid of the costly multidimensional spectrum peak search,it has smaller computational load with parameters paired automatically.In addition,based on the separable characteristic of the L-shaped array and ESPRIT algorithm,the 3-D parameter estimation of wide-band signals with the same frequency is realized successfully.Computer simulation confirms its effectiveness.

关 键 词：宽频段 冲击噪声 频率 到达角 协变异矩阵 

分 类 号：TN911.7[电子电信—通信与信息系统]