在地 关 键 词 DOA估计; 修正的协方差矩阵; 相关多径; 空间平滑 [gap=753]Key words DOA estimation; enhanced covariance matrix; coherent multipath; spatial
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Considering the offered performance of the frequency and 2D AOA estimation algorithmand the practical environment of EW, apply spatial smoothing method to non-unitary linear array and beam-space data to implement the frequency and 2D AOA estimation of coherent signals.
针对电子战的信号环境以及所设计算法提供的性能，成功地将空间平滑方法应用于非均匀阵列下的波束空间数据上，实现了相干信号源的去相干。
参考来源 - 测频测向一体化新体制雷达侦察接收机研制——信号处理机For traditional subspace algorithm will be ineffect on coherent signals, discuss spatial smoothing technique and its improvement;and analyze its performance by simulation combining MUSIC algorithm.
针对传统子空间算法无法解相干信源问题详细讨论了空间平滑技术及其改进,并结合MUSIC算法进行性能仿真分析。
参考来源 - 基于特征子空间的波达方向（DOA）估计算法研究At low SNR, due to the poor distinguishing angles of coherent source of classical MUSIC algorithm and space smoothing, this thesis presents a new space smoothing algorithm to direction of adjacent coherent signal.
2.针对经典MUSIC算法和空间平滑算法低信噪比条件下对相干源角度分辨能力降低问题,提出一种估计相邻相干信号方位的新方法。
参考来源 - 约束波束形成及波达方位估计算法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
信号子空间的扰动分析表明，这种方法优于修正的空间平滑方法。
It is proved by the perturbation analysis of Signal Subspace that the performances of the method presented here are better than the improved spatial smoothing techniques.
提出了相干信源DOA估计的非对称加权空间平滑差分(UWSSD)算法。
Unsymmetrical weighted spatial smoothing difference (UWSSD) algorithm, a new method for the DOA estimation of coherent sources is proposed.
针对空间平滑技术这一特点提出了一种新的波束形成算法，并进行了理论分析。
This paper advances a new beam-forming algorithm aiming at the characteristic of spatial smoothing technology, and carries out theoretical analysis.
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