Low-complexity 2D coherently distributed sources decoupled DOAs estimation method |
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| Authors: | XianSheng Guo Qun Wan WanLin Yang XueMei Lei |
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| Affiliation: | (1) Department of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, China |
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| Abstract: | The existing directions-of-arrival (DOAs) estimation methods for two-dimensional (2D) coherently distributed sources need
one- or two-dimensional search, and the computational complexities of them are high. In addition, most of them are designed
for special angular signal distribution functions. As a result, their performances will degenerate when deal with different
sources with different angular signal distribution functions or unknown angular signal distribution functions. In this paper,
a low-complexity decoupled DOAs estimation method without searching using two parallel uniform linear arrays (ULAs) is proposed
for coherently distributed sources, as well as a novel parameter matching method. It can resolve the problems mentioned above
efficiently. Simulation results validate the effectiveness of our approach.
Supported by the National Natural Science Foundation of China (Grant No. 60772146), and the Program for New Century Excellent
Talents in University (Grant No. NCET-05-0806) |
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| Keywords: | 2D coherently distributed source uniform linear array direction-of-arrival (DOA) decoupled estimation quadric rotational invariance property (QRIP) |
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