This paper addresses the problem of clutter cancellation for ground moving target indication (GMTI) in multi-channel passive radar on mobile platforms. Specifically, the advantages of a space-time adaptive processing (STAP) approach are presented, compared to a displaced phase centre antenna (DPCA) approach, in the case of an angle-dependent imbalance affecting the receiving channels. The schemes are tested against simulated clutter data. Finally, a space-time GLRT detection scheme is proposed, where steering vector is not specified in the spatial domain, resulting in a non-coherent integration of target echoes across the receiving channels. Such solution offers comparable clutter cancellation capability and is more robust against significant calibration errors compared to a conventional GLRT detector, which suffers from spatial steering vector mismatches.
Facing channel calibration issues affecting passive radar DPCA and STAP for GMTI / Blasone, GIOVANNI PAOLO; Colone, Fabiola; Lombardo, Pierfrancesco. - (2020). (Intervento presentato al convegno 2020 International Radar Conference (RADAR), Washington DC, USA, 2020 tenutosi a Washington DC, USA).
Facing channel calibration issues affecting passive radar DPCA and STAP for GMTI
Giovanni Paolo Blasone;Fabiola Colone;Pierfrancesco Lombardo
2020
Abstract
This paper addresses the problem of clutter cancellation for ground moving target indication (GMTI) in multi-channel passive radar on mobile platforms. Specifically, the advantages of a space-time adaptive processing (STAP) approach are presented, compared to a displaced phase centre antenna (DPCA) approach, in the case of an angle-dependent imbalance affecting the receiving channels. The schemes are tested against simulated clutter data. Finally, a space-time GLRT detection scheme is proposed, where steering vector is not specified in the spatial domain, resulting in a non-coherent integration of target echoes across the receiving channels. Such solution offers comparable clutter cancellation capability and is more robust against significant calibration errors compared to a conventional GLRT detector, which suffers from spatial steering vector mismatches.File | Dimensione | Formato | |
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