计算机应用研究Issue(1)：181-184,4.DOI:10.3969/j.issn.1001-3695.2016.01.042
非圆信号与圆信号共存下的快速方位估计算法
Fast DOA estimation under coexistence of both noncircular and circular sources
摘要
Abstract
The existed algorithms had high computational complexity under the coexistence of both noncircular and circular sources,aiming at this situation,this paper proposed a fast algorithm.Firstly,using the reconstruction of observed data and its conjugate,central complex Hermitian matrix could convert into real matrix just by the theorem of double mapping.Secondly, using the recursion of real matrix with multistage Wiener filter(MSWF),it could obtain the signal subspace of observed data, and it avoided the estimation of covariance matrix and its eigendecomposition.Finally,using the real feature of unitary ESPRIT algorithm,without the search of spectrum peak,the computational load of algorithm became less than before at the condition of keeping higher precision of DOA estimation.The computer simulation confirms the validity and the accuracy of the proposed algorithm.关键词
波达方向估计/非圆信号/圆信号/多级维纳滤波/酉ESPRITKey words
direction of arrival estimation/noncircular signal/circular signal/multistage Wiener filter/unitary ESPRIT分类
信息技术与安全科学引用本文复制引用
曾耀平,杨益新,卢光跃,黄琼丹..非圆信号与圆信号共存下的快速方位估计算法[J].计算机应用研究,2016,(1):181-184,4.基金项目
国家自然科学基金资助项目 （）
