Li Li-ping, Hang Ke-ji, Chen Tian-qi. 2-D DOA Estimation of Coherent Wideband FM Signals Based on STFT[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1760-1764.
Citation:
Li Li-ping, Hang Ke-ji, Chen Tian-qi. 2-D DOA Estimation of Coherent Wideband FM Signals Based on STFT[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1760-1764.
Li Li-ping, Hang Ke-ji, Chen Tian-qi. 2-D DOA Estimation of Coherent Wideband FM Signals Based on STFT[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1760-1764.
Citation:
Li Li-ping, Hang Ke-ji, Chen Tian-qi. 2-D DOA Estimation of Coherent Wideband FM Signals Based on STFT[J]. Journal of Electronics & Information Technology, 2005, 27(11): 1760-1764.
Wideband FM signal occupies a wide band in frequency domain and has a time-varying direction vector. Therefore it is difficult to estimate its DOA, particularly the method to estimate 2-D DOA of coherent wideband FM signals has not been reported. This paper constructs a novel time-frequency equation based on STFT and the time-frequency distribution of wideband FM signals. The structure of rectangular or array and the SVD based on the stack of rectangular sub-arrays are also exploited to estimate 2-D DOA of coherent wideband FM signals. Theoretical predictions and simulation results indicate the efficacy of the proposed algorithm.
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