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- Title
Joint Estimation of Time-Frequency Signature and DOA Based on STFD for Multicomponent Chirp Signals.
- Authors
Ziyue Zhao; Congfeng Liu
- Abstract
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.
- Subjects
TIME-frequency analysis; ESTIMATION theory; DIRECTION of arrival estimation; CHIRP modulation; ARRAY processing; HOUGH transforms
- Publication
ISRN Otolaryngology, 2014, p1
- ISSN
2090-5742
- Publication type
Article
- DOI
10.1155/2014/937139