DOA Estimation Based on Time-Frequency Maximum Likelihood

Tian Da; Zhang Hong; Chen Tian-qi

Volume 27 Issue 2

Feb. 2005

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Tian Da, Zhang Hong, Chen Tian-qi. DOA Estimation Based on Time-Frequency Maximum Likelihood[J]. Journal of Electronics & Information Technology, 2005, 27(2): 184-188.

Citation:

Tian Da, Zhang Hong, Chen Tian-qi. DOA Estimation Based on Time-Frequency Maximum Likelihood[J]. Journal of Electronics & Information Technology, 2005, 27(2): 184-188.

Tian Da, Zhang Hong, Chen Tian-qi. DOA Estimation Based on Time-Frequency Maximum Likelihood[J]. Journal of Electronics & Information Technology, 2005, 27(2): 184-188.

Citation:

Tian Da, Zhang Hong, Chen Tian-qi. DOA Estimation Based on Time-Frequency Maximum Likelihood[J]. Journal of Electronics & Information Technology, 2005, 27(2): 184-188.

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DOA Estimation Based on Time-Frequency Maximum Likelihood

Received Date: 2003-09-02
Rev Recd Date: 2003-03-02
Publish Date: 2005-02-19

Abstract

Abstract

An algorithm is presented for Direction-Of-Arrival (DOA) estimation of nonstationary signals impinging on the antenna array. The proposed method establishes a simplified array signal model in the time-frequency (t-f) domain by evaluating the cross Pseudo Wigner-Ville Distributions (PWVD) between the outputs of the reference element and other elements of the array, and provides a signal selective DOA estimator based on the t-f maximum likelihood. Compared with the Spatial Time-Frequency Distributions (STFD) matrices-based methods, the proposed method can make full use of the crossterms in the t-f plane, and the computational load is significantly reduced. Simulations are provided to demonstrate the effectiveness of the method.

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References

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