Sparse Bayesian Perspective for Radar Coincidence Imaging with Model Errors
Joint Authors
Zhou, Xiaoli
Cheng, Yongqiang
Fan, Bo
Chen, Shuo
Jiang, Zhijie
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-04-21
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Sparsity-driven methods are commonly applied to reconstruct targets in radar coincidence imaging (RCI), where the reference matrix needs to be computed precisely and the prior knowledge of the accurate imaging model is essential.
Unfortunately, the existence of model errors in practical RCI applications is common, which defocuses the reconstructed image considerably.
Accordingly, this paper aims to formulate a unified framework for sparsity-driven RCI with model errors based on the sparse Bayesian approach.
Firstly, a parametric joint sparse reconstruction model is built to describe the RCI when perturbed by model errors.
The structured sparse Bayesian prior is then assigned to this model, after which the structured sparse Bayesian autofocus (SSBA) algorithm is proposed in the variational Bayesian expectation maximization (VBEM) framework; this solution jointly realizes sparse imaging and model error calibration.
Simulation results demonstrate that the proposed algorithm can both calibrate the model errors and obtain a well-focused target image with high reconstruction accuracy.
American Psychological Association (APA)
Fan, Bo& Zhou, Xiaoli& Chen, Shuo& Jiang, Zhijie& Cheng, Yongqiang. 2020. Sparse Bayesian Perspective for Radar Coincidence Imaging with Model Errors. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1202059
Modern Language Association (MLA)
Fan, Bo…[et al.]. Sparse Bayesian Perspective for Radar Coincidence Imaging with Model Errors. Mathematical Problems in Engineering No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1202059
American Medical Association (AMA)
Fan, Bo& Zhou, Xiaoli& Chen, Shuo& Jiang, Zhijie& Cheng, Yongqiang. Sparse Bayesian Perspective for Radar Coincidence Imaging with Model Errors. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1202059
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1202059