摘要
利用正交投影矩阵的零空间构造信号的频率矢量空间和方向矢量空间，实现多个窄带辐射源的频率／方向估计，避免了常用的特征值分解以及频率与方向的配对过程，计算量小，且适用于较低信噪比和较短数据。
A new algorithm for frequency and direction estimation is proposed that utilizes the null spaces of orthogonal matrices to estimate the center frequencies and directions of arrival of multiple narrow band sources. Its main advantage over other methods is to require to neither eigendecomposition nor frequency direction pairing. Computer simulation results show that the algorithm can be applied in lower SNR and shorter snapshots. [WT9.HZ〗
出处
《系统工程与电子技术》
EI
CSCD
1999年第1期50-54,共5页
Systems Engineering and Electronics
基金
军事电子预研基金
关键词
电子对抗
雷达测量
天线阵
频率
信号处理
Electronic countermeasure, Radar countermeasure, Antenna array, Frequency estimation, Direction estimation.
