摘要
互耦误差对阵列DOA估计性能产生了严重影响。基于L型阵列,建立了互耦误差模型,提出了一种基于MUSIC迭代法的互耦误差自校正算法和在互耦误差条件下的DOA估计算法。利用MUSIC迭代法对互耦误差矩阵和DOA同时估计,且同时估计出来波信号的方向角和俯仰角。仿真实验验证了该算法具有分辨力强、校正精度高的特点。
Mutual coupling error has a serious impact on DOA estimation performance. Based on the L- shaped array, the error model of array is conducted, and a mutual coupling error self-correction algorithm based on the MUSIC iterative method and a DOA estimation algorithm under the conditions of mutual coupling error are proposed. The proposed algorithm uses MUSIC iterative method to estimate the mutual coupling er- ror matrix and DOA. And at the same time, it also can estimate direction angle and pitch angle of the wave signal. Simulation results show that the proposed algorithm has the characteristics of high strong resolution and accuracy correction.
出处
《航天电子对抗》
2012年第6期58-61,共4页
Aerospace Electronic Warfare
基金
国家自然科学基金项目(61071140)
关键词
L型阵列
互耦误差
MUSIC迭代法
波达方向估计
L-shaped array
mutual coupling error
MUSIC iterative method
direction of arrival estimation
