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Proceedings Paper

Wigner distribution in the Doppler rate estimation of SAR signals
Author(s): Nicola Veneziani; R. Albrizio; Francesco Posa; R. Sergi
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Paper Abstract

Synthetic Aperture Radar's data are today widely used in Remote Sensing applications, in order to obtain high resolution ground images. For this purpose a good estimation of Doppler parameters is required. The focusing quality of the final image will depend mainly on the update rate and accuracy of Doppler rate estimations obtained directly from sensor's raw-data. Although the autofocus algorithm normally used has not theoretical limitations, from a practical point of view it works well only under appropriate conditions. In this paper an alternative technique will be proposed, based on the Wigner distribution analysis of sensor's data; results about its application to simulated and real signals will also be reported.

Paper Details

Date Published: 15 November 1993
PDF: 11 pages
Proc. SPIE 1938, Recent Advances in Sensors, Radiometric Calibration, and Processing of Remotely Sensed Data, (15 November 1993); doi: 10.1117/12.161544
Show Author Affiliations
Nicola Veneziani, Istituto Elaborazione Segnali e Immagini/CNR (Italy)
R. Albrizio, Istituto Elaborazione Segnali e Immagini/CNR (Italy)
Francesco Posa, Politecnico di Bari (Italy)
R. Sergi, Politecnico di Bari (Italy)


Published in SPIE Proceedings Vol. 1938:
Recent Advances in Sensors, Radiometric Calibration, and Processing of Remotely Sensed Data
Pat S. Chavez; Robert A. Schowengerdt, Editor(s)

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