跳频信号与跟踪干扰信号DOA估计方法

DOA estimation methods of FH signals and follower jamming signals

提出了一种基于修正的旋转信号子空间(rotational signal subspace,RSS)算法的跳频信号和跟踪干扰信号波达方向(direction of arrival,DOA)估计方法。首先,将接收到的跳频信号和跟踪干扰信号进行离散傅里叶变换;然后,利用修正RSS算法,得到聚焦后协方差矩阵的估计值;最后,利用MUSIC算法,实现跳频信号和相关干扰信号的DOA估计。仿真结果验证了该方法的有效性。

A method of DOA estimation for frequency hopping（FH）signals and follower jamming signals based on modified RSS algorithm is proposed,which can realize DOA estimation of FH signals and follower jamming signals.First,the receiver signals of FH signals and follower jamming signals are processed by using discrete fourier transform.Then,the estimation value of focusing matrix is gained by using the modified RSS algorithm.At last,the DOA estimation of FH signals and follower jamming signals is made by using MUSIC algorithm.The simulation results demonstrate that the estimation method is effective and efficient.