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| 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 |
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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.
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Received: 27 November 2006
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2008, Vol. 30 
