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| Single Snapshot DOA Estimation Method Based on Rearrangement of Array Receiving Signal |
| Jiang Bai-feng①② Lü Xiao-de① Xiang Mao-sheng① |
①(National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
②(University of Chinese Academy of Sciences, Beijing 100049, China) |
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Abstract Most of spatial spectrum estimation methods fail when there is only one valid snapshot. To deal with this issue, a pseudo covariance matrix construction model utilizing array receiving signal is proposed. Theoretical analysis shows that the presented model, which consists in the existing methods, is more flexible and general. Combining with beam forming idea, a method based on weighted summarizing is proposed, which considers both the affections of signal-to-noise ratio and array freedom. Estimation performance can be enhanced in some degree. Theoretical analysis and simulation results verify the correctness and effectiveness of the proposed method and model.
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Received: 19 August 2013
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Corresponding Authors:
Jiang Bai-feng
E-mail: jbf_gucas@163.com
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2014, Vol. 36 
