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Proceedings Paper

New algorithm for interferometric DEM geocoding
Author(s): Giovanni Nico; Alberto Refice; Luciano Guerriero; Nicola Veneziani
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Paper Abstract

SAR interferometry can be used to derive topographic information (DEM) on the earth surface. An operation called geocoding is necessary to translate the DEM form a range- azimuth to a latitude-longitude reference system. This paper introduces a new algorithm for geocoding interferometric DEMs based on an iterative procedure using the reference ellipsoid as the first guess, then locating each earth point on a succession of planes locally parallel to the ellipsoid. The procedure is shown to geometrically converge to the considered DEM point. Given its high accuracy, this method could be used as a precision tool for use in difficult zones.

Paper Details

Date Published: 22 December 1997
PDF: 10 pages
Proc. SPIE 3217, Image Processing, Signal Processing, and Synthetic Aperture Radar for Remote Sensing, (22 December 1997); doi: 10.1117/12.295612
Show Author Affiliations
Giovanni Nico, Dipt. Interateneo di Fisica (Italy)
Alberto Refice, Dipt. Interateneo di Fisica (Italy)
Luciano Guerriero, Dipt. Interateneo di Fisica (Italy)
Nicola Veneziani, Istituto Elaborazione Segnali e Immagini/CNR (Italy)


Published in SPIE Proceedings Vol. 3217:
Image Processing, Signal Processing, and Synthetic Aperture Radar for Remote Sensing
Jacky Desachy; Shahram Tajbakhsh, Editor(s)

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