Coherent wideband DOA estimation of multiple FM signals using spatial time-frequency distributions

2002 ◽  
Author(s):  
A.B. Gershman ◽  
M.G. Amin
Keyword(s):  
Doa Estimation ◽  
Frequency Distributions ◽  
Time Frequency ◽  
Fm Signals

scholarly journals Joint Estimation of Time-Frequency Signature and DOA Based on STFD for Multicomponent Chirp Signals

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Ziyue Zhao ◽  
Congfeng Liu
Keyword(s):  
Array Processing ◽  
Estimation Method ◽  
Doa Estimation ◽  
Joint Estimation ◽  
Subspace Method ◽  
Signal Model ◽  
Frequency Distributions ◽  
Time Frequency ◽  
Chirp Signals ◽  
Estimation Of Time

In the study of the joint estimation of time-frequency signature and direction of arrival (DOA) for multicomponent chirp signals, an estimation method based on spatial time-frequency distributions (STFDs) is proposed in this paper. Firstly, array signal model for multicomponent chirp signals is presented and then array processing is applied in time-frequency analysis to mitigate cross-terms. According to the results of the array processing, Hough transform is performed and the estimation of time-frequency signature is obtained. Subsequently, subspace method for DOA estimation based on STFD matrix is achieved. Simulation results demonstrate the validity of the proposed method.

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