摘要
基于空间目标空域的稀疏性,提出一种基于压缩感知(CS)的单端口波达方向(DOA)估计算法。在单端口阵列的基础上,验证了其压缩感知模型的感知矩阵满足约束等容(RIP)的条件,并利用丹茨格选择器(DS)恢复原始信号。该算法在一个射频端口的情况下,可在低快拍数情况下有效估计任意相干性信号的DOA,算法具有高的估计精度及角度分辨率,其性能优于传统DOA估计算法。仿真结果验证了该算法的有效性和优越性。
On the basis of airspace sparsity of the space targets, this paper puts forward a single-port direction of arrival （DOA） estimating algorithm based on compressive sensing （CS）, validates the conditions that the sensing matrix of its CS model satisfying the restricted isometry property （RIP） ,and uses Danzig selector （DS） to recover the original signal. The DOA of arbitrary coher- ence signal can be estimated effectively in the condition of less snapshots with only one radio fre- quency port through the algorithm, the presented algorithm has high estimation accuracy and angle resolution,and its performance is better than traditional DOA estimating algorithms. Simulation re- sults validate the validity and superiority of the proposed algorithm.
出处
《舰船电子对抗》
2016年第4期59-62,共4页
Shipboard Electronic Countermeasure
关键词
压缩感知
波达方向
高分辨率
单端口
compressive sensing
direction of arrival
high resolution
single-port
