High Accuracy Direction Finding Using Separated Subarrays
In this paper we study Direction-Of-Arrival (DOA) estimation with a sparse linear arrays composed of two widely separated subarrays. Since a large array aperture is obtained with a small number of elements,this configuration can provide angle estimate with high accuracy. The proposed method for DOA estimate is the use of two-stage algorithms wherein the first stage performs an initial estimate with spares array Unitary ESPRTT(Estimation of signal parameter via rotational invariance techniques) and the second stage is used to refine the estimate through maximum likelihood method using secant method. Simulation results show the proposed approach outperforms the conventional methods such as monopulse and ESPRIT.
Separated Subarrays DOA Estimation Unitary ESPRIT Maximum Likelihood Method Secant Method
Chen Genhua Chen Baixiao Yang Minglei
National Lab of Radar Signal Processing Xidian University,xian,Shaanxi,P.R. China
国际会议
西安
英文
1309-1313
2011-12-23（万方平台首次上网日期，不代表论文的发表时间）