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Design of Robust Radar Detectors Through Random Perturbation of the Target Signature

Coluccia, Angelo and Ricci, Giuseppe and Besson, Olivier Design of Robust Radar Detectors Through Random Perturbation of the Target Signature. (2019) IEEE Transactions on Signal Processing, 67 (19). 5118-5129. ISSN 1053-587X

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Official URL: https://doi.org/10.1109/TSP.2019.2935915

Abstract

The paper addresses the problem of designing radar detectors more robust than Kelly's detector to possible mismatches of the assumed target signature, but with no performance degradation under matched conditions. The idea is to model the received signal under the signal-plus-noise hypothesis by adding a random component, parameterized via a design covariance matrix, that makes the hypothesis more plausible in presence of mismatches. Moreover, an unknown power of such component, to be estimated from the observables, can lead to no performance loss, under matched conditions. Derivation of the (one-step) GLRT is provided for two choices of the design matrix, obtaining detectors with different complexity and behavior. A third parametric detector is also obtained by an ad-hoc generalization of one of such GLRTs. The analysis shows that the proposed approach can cover a range of different robustness levels that is not achievable by state-of-the-art with the same performance of Kelly's detector under matched conditions.

Item Type:Article
HAL Id:hal-02641298
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Università del Salento (ITALY)
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Deposited On:28 May 2020 14:35

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