An ESPRIT-Like algorithm for coherent DOA estimation

被引：189

作者：

Han, FM ^{[1
]}

Zhang, XD

机构：

[1] Xidian Univ, Key Lab Radar Signal Proc, Xian 710071, Peoples R China

[2] Tsing Hua Univ, Natl Lab Tsinghua Informat Sci & Technol, Dept Automat, Beijing 100084, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2005年 / 4卷

基金：

中国国家自然科学基金;

关键词：

coherent signals; direction-of-arrival (DOA) estimation; estimation of signal parameter via rotational invariance techniques (ESPRIT) algorithm; Toeplitz matrix;

D O I：

10.1109/LAWP.2005.860194

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Conventionally, the approaches to coherent direction-of-arrival (DOA) estimation are to eliminate the rank loss of the spatial covariance matrix. In this letter, a new technique is presented from another point of view, which reconstructs a special antenna array model based on the Toeplitz matrix whose rank is only related to the DOA of signals and cannot be affected by the coherency between them. Therefore, the signal and noise subspaces; can be estimated properly. In conjoint with the improved estimation of signal parameter via rotational invariance techniques (ESPRIT) algorithm, it is capable of resolving the DOAs of coherent signals as well as uncorrelated signals without peak searching. The numerical examples demonstrate its validity.

引用

页码：443 / 446

页数：4