Abstract: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.
李立萍; 黄克骥;陈天麒. 基于STFT的相干宽带调频信号2-D到达角估计[J]. 电子与信息学报, 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. , 2005, 27(11): 1760-1764 .