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Proceedings Paper

Subaperture Doppler parameter estimation for synthetic aperture radar
Author(s): Nicola Veneziani; Francesco P. Lovergine
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Paper Abstract

Algorithms widely used for Doppler parameter estimations in SAR processing, show some limitations when platform parameters are time-varying. In this paper an alternative technique, based on the Wigner distribution, will be proposed, to reconstruct the full Doppler history of an emerging point target and then to estimate the Doppler rate in short time intervals (sub-apertures). Moreover, the Doppler centroid will be estimated by using instantaneous frequency corresponding to antenna boresight. Methods for the sub-aperture focalization of emerging target point are also presented. Results obtained with satellite and airborne SAR signals are reported.

Paper Details

Date Published: 13 August 1999
PDF: 12 pages
Proc. SPIE 3721, Algorithms for Synthetic Aperture Radar Imagery VI, (13 August 1999); doi: 10.1117/12.357631
Show Author Affiliations
Nicola Veneziani, Istituto Elaborazione Segnali ed Immagini (Italy)
Francesco P. Lovergine, Istituto Elaborazione Segnali ed Immagini (Italy)

Published in SPIE Proceedings Vol. 3721:
Algorithms for Synthetic Aperture Radar Imagery VI
Edmund G. Zelnio, Editor(s)

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