Publications

Version: 1.1 Approved

LDO-ID 2018-03-16-01

Title Target DoA estimation in Passive Radar using nonuniform linear arrays and multiple frequency channels

Abstract

In this paper we present a robust approach for target direction of arrival (DoA) estimation in passive radar that jointly exploits spatial and frequency diversity. Specifically we refer to a DVB-T based passive radar receiver equipped with a linear array of few antenna elements non-uniformly spaced in the horizontal dimension, able to collect multiple DVB-T channels simultaneously. We resort to a maximum likelihood (ML) approach to jointly exploit the target echoes collected across the antenna elements at multiple carrier frequencies. Along with an expected improvement in terms of DoA estimation accuracy, we show that the available spatial and frequency diversity can be fruitfully exploited to extend the unambiguous angular sector useful for DoA estimation, which represent an invaluable tool in many applications. To this purpose, a performance analysis is reported against experimental data collected by a multi-channel DVB-T based passive radar developed by Leonardo S.p.A.

Authors Filippini Francesca, Martelli Tatiana, Colone Fabiola, Cardinali Roberta

Type Paper for Seminar/Symposium/Conference

Media 2018 IEEE Radar Conference (23-27 April 2018, Oklaoma City, OK, USA)

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Anno 2018