A SUBARRAY-SYNTHESIS BASED 2D DOA ESTIMATION METHOD  

作　　者：Xu Wenlong Jiang Wei Li Zengfu Shang Yong Xiang Haige 

机构地区：[1]Satellite Communications Lab, Department of Electronics, Peking University, Beijing 100871, China

出　　处：《Journal of Electronics(China)》2006年第5期645-649,共5页电子科学学刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.60462002 and No.60302006).

摘　　要：In some satellite communications, we need to perform Direction Of Arrival (DOA) angle estima- tion under the restriction that the number of receivers is less than that of the array elements in an array antenna. To solve the conundrum, a method named subarray-synthesis-based Two-Dimensional DOA (2D DOA) angle estimation is proposed. In the method, firstly, the array antenna is divided into a series of subarray antennas based on the total number of receivers; secondly, the subarray antennas’ output covariance matrices are esti- mated; thirdly, an equivalent covariance matrix is synthesized based on the subarray output covariance matri- ces; then 2D DOA estimation is performed. Monte Carlo simulations showed that the estimation method is ef- fective.In some satellite communications, we need to perform Direction Of Arrival （DOA） angle estimation under the restriction that the number of receivers is less than that of the array elements in an array antenna. To solve the conundrum, a method named subarray-synthesis-based Two-Dimensional DOA （2D DOA） angle estimation is proposed. In the method, firstly, the array antenna is divided into a series of subarray antennas based on the total number of receivers; secondly, the subarray antennas＇ output covariance matrices are estimated; thirdly, an equivalent covariance matrix is synthesized based on the subarray output covariance matrices; then 2D DOA estimation is performed. Monte Carlo simulations showed that the estimation method is effective.

关 键 词：Spatial signal processing Direction Of Arrival （DOA） estimation Eigenspace decomposition Time Division Multiplex （TDM） Subarray synthesis 

分 类 号：TN1[电子电信—物理电子学]