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Remote Sens. 2017, 9(7), 756;

Passive Radar Array Processing with Non-Uniform Linear Arrays for Ground Target’s Detection and Localization

Signal Theory and Communications Department, Superior Polytechnic School, University of Alcalá, Alcalá de Henares, 28805 Madrid, Spain
The authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editors: Francesco Soldovieri, Raffaele Persico, Xiaofeng Li and Prasad S. Thenkabail
Received: 1 May 2017 / Revised: 10 July 2017 / Accepted: 19 July 2017 / Published: 22 July 2017
(This article belongs to the Special Issue Radar Systems for the Societal Challenges)
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The problem of ground target detection with passive radars is considered. The design of an antenna array based on commercial elements is presented, based on a non-uniform linear array optimized according to sidelobe level requirements. Array processing techniques are applied in the cross-ambiguity function domain to exploit integration gain, system resolution and the sparsity of targets in this domain. A modified two-stage detection scheme is described, which is based on a previously-published one by other authors. All of these contributions are validated in a real semiurban scenario, proving the capabilities of detection, the direction of arrival estimation and the tracking of ground targets in the presence of big buildings that generate strong clutter returns. Detection performance is validated through the probability of false alarm and the probability of detection estimation with specified estimation errors. View Full-Text
Keywords: passive radar; array; beamforming; non-ULA; DOA; detection passive radar; array; beamforming; non-ULA; DOA; detection

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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del-Rey-Maestre, N.; Mata-Moya, D.; Jarabo-Amores, M.-P.; Gómez-del-Hoyo, P.-J.; Bárcena-Humanes, J.-L.; Rosado-Sanz, J. Passive Radar Array Processing with Non-Uniform Linear Arrays for Ground Target’s Detection and Localization. Remote Sens. 2017, 9, 756.

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