Widely Distributed Radar Imaging: Unmediated ADMM Based Approach

Murtada, Ahmed Abdelnaser Elsayed; Hu, Ruizhi; Mysore Rama Rao, Bhavani Shankar; Schroeder, Udo

doi:10.1109/JSTSP.2022.3210766

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Widely Distributed Radar Imaging: Unmediated ADMM Based Approach

Murtada, Ahmed Abdelnaser Elsayed; Hu, Ruizhi; Mysore Rama Rao, Bhavani Shankar et al.

2022 • In IEEE Journal of Selected Topics in Signal Processing

Peer Reviewed verified by ORBi

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https://hdl.handle.net/10993/52924

DOI
10.1109/JSTSP.2022.3210766

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Keywords :

Radar Imaging; Widely distributed radars; Wide angle SAR; ADMM

Abstract :

[en] This paper presents a novel approach to reconstruct a unique image of an observed scene via synthetic apertures (SA) generated by employing widely distributed radar sensors. The problem is posed as a constrained optimization problem in which the global image which represents the aggregate view of the sensors is a decision variable. While the problem is designed to promote a sparse solution for the global image, it is constrained such that a relationship with local images that can be reconstructed using the measurements at each sensor is respected. Two problem formulations are introduced by stipulating two different establishments of that relationship. The proposed formulations are designed according to consensus ADMM (CADMM) and sharing ADMM (SADMM), and their solutions are provided accordingly as iterative algorithms. We drive the explicit variable updates for each algorithm in addition to the recommended scheme for hybrid parallel implementation on the distributed sensors and a central processing unit. Our algorithms are validated and their performance is evaluated by exploiting the Civilian Vehicles Dome dataset to realize different scenarios of practical relevance. Experimental results show the effectiveness of the proposed algorithms, especially in cases with limited measurements.

Research center :

- Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SPARC- Signal Processing Applications in Radar and Communications

Disciplines :

Electrical & electronics engineering

Author, co-author :

Murtada, Ahmed Abdelnaser Elsayed ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC

Hu, Ruizhi ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC

Mysore Rama Rao, Bhavani Shankar ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC

Schroeder, Udo

External co-authors :

yes

Language :

English

Title :

Widely Distributed Radar Imaging: Unmediated ADMM Based Approach

Publication date :

2022

Journal title :

IEEE Journal of Selected Topics in Signal Processing

ISSN :

1941-0484

Publisher :

Institute of Electrical and Electronics Engineers, New York, United States - New York

Special issue title :

Recent Advances in Wideband Signal Processing for Classical and Quantum Synthetic Apertures

Peer reviewed :

Peer Reviewed verified by ORBi

FnR Project :

FNR15364040 - Radar Distributed Sensors For Indoor Imaging, 2020 (01/10/2020-15/06/2024) - Ahmed Abdelnaser Elsayed Murtada

Funders :

FNR - Fonds National de la Recherche [LU]

Available on ORBilu :

since 30 November 2022

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