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一种修正ESPRIT信号DOA估计算法

A Modified ESPRIT Algorithm for Signal DOA Estimation
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摘要 分析了典型DOA估计算法的优缺点,针对信噪比较小的情况下对CESPRIT做出了一些修正,将接收数据共轭重排再利用,构造矩阵修正的ESPRIT算法,称之为MCESPRIT算法。理论分析和仿真实验表明,该算法同经典的ESPRIT以及其他2种修正算法MESPRIT算法及CESPRIT算法相比,在信噪比较小及快拍次数有限时,能够改善信号DOA估计的性能。 The advantages and disadvantages of representative DOA estimating algorithm are analyzed here. Aiming at low SNR, a modified ESPRIT algorithm is presented. This algorithm is called MCE-SPRIT algorithm based on the correlation matrix constructed by reusing the rearranged conjugate data. Theoretical analysis and simulation test have proved that the modified ESPRIT algorithm can improve the performances of the signal DOA estimation obviously compared with typical ESPRIT algorithm and the two other modified ESPRIT algorithms, when the SNR is lower and the snapshot number is limited.
作者 韩晓玲 姜秋喜 史军军 李明亮
机构地区 电子工程学院
出处 《现代防御技术》 北大核心 2009年第6期109-113,共5页 Modern Defence Technology
关键词 DOA估计 ESPRIT算法 MESPRIT算法 CESPRIT算法 MCESPRIT算法 direction of arrival（DOA） estimation estimation of signal parameters via rotational invariance techniques（ESPRIT） modified ESPRIT（MESPRIT） algorithm conjugate ESPRIT（CESPRIT） algorithm modified conjugate ESPRIT（MCESPRIT） algorithm
分类号 TN823 [电子电信—信息与通信工程] TN957.51 [电子电信—信号与信息处理]
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参考文献9

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二级参考文献7

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现代防御技术
2009年 第6期

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