对称压缩谱的改进求根快速DOA估计

发布时间：2018-01-25 05:26

本文关键词： 波达方向角估计对称压缩谱(MSCS)算法多项式求根　出处：《计算机应用研究》2017年06期 　论文类型：期刊论文

【摘要】：为提高波达方向(DOA)角估计算法的运算速度,在分析了对称压缩谱(MSCS)算法利用构造共轭噪声子空间并对噪声子空间和共轭噪声子空间的交集进行奇异值分解,等效添加镜像辐射源思想的基础上,提出了构建MSCS算法的多项式,求解MSCS算法多项式根的方法。该算法保持了MSCS算法的镜像特性,并且不需要在半谱内进行遍历搜索,只需在半谱内进行求根处理即可。理论分析和仿真实验表明,该算法进一步提高了MSCS运算速度;相对于求根类MUSIC算法,该算法提高了DOA估计精度,从而证明了该算法的有效性。
[Abstract]:In order to improve the speed of DOA estimation algorithm. Based on the analysis of the symmetrically compressed spectrum MSCS algorithm, the conjugate noise subspace is constructed and the intersection of the noise subspace and the conjugate noise subspace is decomposed by singular value decomposition, and the image emitter is added to the algorithm. The polynomial of MSCS algorithm is constructed and the method of solving the root of polynomial of MSCS algorithm is proposed. The algorithm preserves the mirrored character of MSCS algorithm and does not need to traverse search in half spectrum. The theoretical analysis and simulation results show that the algorithm can further improve the speed of MSCS operation. Compared with the root-like MUSIC algorithm, the algorithm improves the accuracy of DOA estimation and proves the effectiveness of the algorithm.
【作者单位】：军械工程学院电子与光学工程系;
【基金】：国家自然科学基金资助项目(61372039)
【分类号】：TN911.7
【正文快照】： 数。对称压缩谱(MUSIC symmetrical compressed spectrum,0引言MSCS)算法[13~15]在空间谱的半谱内搜索,将MUSIC算法的运波达方向(DOA)估计作为阵列信号处理领域的主要研究算量降低了50%,但是在半谱内搜索的运算量仍然很大,尤其方向之一,在无线电探测、无源有源定位、雷达、侦

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