The paper addresses the problem of finding an optimal estimation of the Doppler centroid for Synthetic Aperture Radar (SAR) data. The original idea is to exploit a bandwidth much wider than the PRF, say 3-5 times, by selecting non-aliased point targets. Non-aliased band of natural and isolated targets with close-to-ideal features is evidenced by spotlight processing of strip map acquisitions and accurate Doppler centroid is estimated by means of a joint Maximum Likelihood (ML) estimator. Lower bound of the estimate is determined and results on both simulated and real X-band SAR data are shown.
Accurate optimal doppler centroid estimation for SAR data / Guccione, Pietro; Monti Guarnieri, A.. - STAMPA. - (2011), pp. 2460-2463. (Intervento presentato al convegno IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 tenutosi a Vancouver, Canada nel July 24-29, 2011) [10.1109/IGARSS.2011.6049709].
Accurate optimal doppler centroid estimation for SAR data
GUCCIONE, Pietro;
2011
Abstract
The paper addresses the problem of finding an optimal estimation of the Doppler centroid for Synthetic Aperture Radar (SAR) data. The original idea is to exploit a bandwidth much wider than the PRF, say 3-5 times, by selecting non-aliased point targets. Non-aliased band of natural and isolated targets with close-to-ideal features is evidenced by spotlight processing of strip map acquisitions and accurate Doppler centroid is estimated by means of a joint Maximum Likelihood (ML) estimator. Lower bound of the estimate is determined and results on both simulated and real X-band SAR data are shown.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
