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DOA Estimation for a Passive Synthetic Array Based on Cross-Correlation Matrix

Wei Jiang 1, Guodong Qin 2, and Jian Dong 2
1. Science and Technology on Electronic Information Control Laboratory, Chengdu, China
2. School of Electronic Engineering, Xidian Univ., Xi’an, China
Abstract—Obtaining higher bearing resolution with an aperture limited array has been more and more important in array signal processing. In this paper, a novel MUSIC algorithm based on cross-correlation matrix is proposed to obtain a high angle resolution by using passive synthetic aperture (PSA) array which is formed with a single antenna. To decrease the computational complexity, the noise subspace is calculated by orthogonal projector instead of eigendecomposition of covariance matrix. The proposed algorithm has a better angle resolution with the utility of the PSA technique. Meanwhile, numerical simulations indicate that the DOA estimation performance of the proposed algorithm is superior to the traditional MUSIC in estimation accuracy and computational complexity.
Index Terms—passive synthetic aperture, DOA, virtual array, MUSIC

Cite: Wei Jiang, Guodong Qin, and Jian Dong, "DOA Estimation for a Passive Synthetic Array Based on Cross-Correlation Matrix," International Journal of Signal Processing Systems, Vol. 5, No. 2, pp. 55-59, June 2017. doi: 10.18178/ijsps.5.2.55-59
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