22 December 1997 New algorithm for interferometric DEM geocoding
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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.
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Giovanni Nico, Giovanni Nico, Alberto Refice, Alberto Refice, Luciano Guerriero, Luciano Guerriero, Nicola Veneziani, 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); doi: 10.1117/12.295612; https://doi.org/10.1117/12.295612
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