一种新的近场源三维参数联合估计算法  

A New Algorithm for Joint Range-DOA-Carrier Estimation of Near-Field Sources

作　　者：陈建峰[1] 张贤达[2] 

机构地区：[1]西安电子科技大学雷达信号处理重点实验室,陕西西安710071 [2]清华大学自动化系,北京100084

出　　处：《电路与系统学报》2003年第5期1-4,共4页Journal of Circuits and Systems

基　　金：国家自然科学基金资助项目(60072043)

摘　　要：本文研究近场源距离、频率和到达角(DOA)三维参数的联合估计问题,并提出一种计算有效的新算法。该算法利用特征值及相应的特征矢量估计信号参数,不需要谱峰搜索且各参数自动配对。此外,新算法使用四阶累积量,因此适用于任意的加性高斯噪声环境。计算机仿真证实了所提算法的有效性。The joint estimation problem of range, DOA and frequency of near-field narrowband sources is studied, and a new computationally efficient algorithm is proposed. According to this algorithm, eigenvalues together with the corresponding eigenvectors is used to estimate signal parameters, as to avoid searching spectral peak or pairing among parameters. Additionally, it is not necessary to deal with arbitrary Gaussian noise environment since it is based on the fourth-order cumulants. Finally, the effectiveness of the proposed algorithm is verified by extensive computer simulations.

关 键 词：阵列信号处理 DOA估计 距离估计 频率估计 四阶累积量 

分 类 号：TN911.7[电子电信—通信与信息系统]