Paper
22 December 1997 New algorithm for interferometric DEM geocoding
Giovanni Nico, Alberto Refice, Luciano Guerriero, Nicola Veneziani
Author Affiliations +
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.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Giovanni Nico, Alberto Refice, Luciano Guerriero, and Nicola Veneziani "New algorithm for interferometric DEM geocoding", Proc. SPIE 3217, Image Processing, Signal Processing, and Synthetic Aperture Radar for Remote Sensing, (22 December 1997); https://doi.org/10.1117/12.295612
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KEYWORDS
Interferometry

Synthetic aperture radar

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