31 January 1995 Some results from geocoding and calibration of ERS-1 SAR FD images in a mountainous area
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Abstract
An algorithm for geometric and radiometric correction of ERS-1 synthetic aperture radar images by using digital elevation model data is described and applied to images over a mountainous area in Norway. Several images covering the same area are corrected and geocoded into UTM map projection and the results are evaluated against map and in-situ measurements. The map to SAR geometric precision is given by a rms value of 54 m in the east and 45 m in the north. The SAR to SAR geometric precision is given by a rms value of 43 m in the east and 44 m in the north. Estimates of the radar backscatter coefficient are extracted from the geocoded SA backscatter images. Obtained values are for wet snow -13 dB and for dry snow -7 dB which agrees favorably with earlier radar measurements.
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Harald Johnsen, Inge Lauknes, Tore Guneriussen, "Some results from geocoding and calibration of ERS-1 SAR FD images in a mountainous area", Proc. SPIE 2314, Multispectral and Microwave Sensing of Forestry, Hydrology, and Natural Resources, (31 January 1995); doi: 10.1117/12.200737; https://doi.org/10.1117/12.200737
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