Joint 2-D Angle and Noncircularity Phase Estimation
Liu Jian①②; Huang Zhi-tao①; Zhou Yi-yu①
①School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China;②Telecommunication Engineering College, Airforce Engineering University, Xi’an 710077, China
Abstract：A novel joint 2-D angle and noncircularity phase estimation for noncircular signals using dual parallel linear subarrays called extended NC-MUSIC (EN-MUSIC) algorithm is presented. The azimuth, the elevation and the noncircularity phases estimated by EN-MUSIC are paired automatically. The resolvable number of sources for EN-MUSIC can be larger than the number of sensors of each subarray. The estimation precision of 2-D angles by EN-MUSIC algorithm is approximately equal to two dimensional unitary ESPRIT for noncircular signals (2D-NC-UESPRIT), and is better than the DOA Matrix (DOAM) algorithm.
2008, Vol. 30 
