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

Ziyue Zhao | Zendy; Congfeng Liu | Zendy

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

Author(s) -

Ziyue Zhao,

Congfeng Liu

Publication year - 2014

Publication title -

international scholarly research notices

Language(s) - English

Resource type - Journals

ISSN - 2356-7872

DOI - 10.1155/2014/937139

Subject(s) - chirp , computer science , signature (topology) , joint (building) , subspace topology , direction of arrival , time–frequency analysis , signal (programming language) , pattern recognition (psychology) , algorithm , signal processing , speech recognition , artificial intelligence , mathematics , telecommunications , radar , physics , engineering , optics , architectural engineering , laser , geometry , antenna (radio) , programming language

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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