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Investigation of SIR-B images for lithologic mappingIt is immediately apparent from the examination of almost any synthetic aperture radar (SAR) data that the radar return is primarily a function of the topographic relief. Yet radar reflectance is dependent on both surface roughness and the dielectric constant of the surface material. These two parameters can in many cases be related to lithologic units. Thus, if the first-order terrain effects due to topographic relief could (in essence) be removed from the radar image, the SAR data might well be used for lithologic discrimination. Such an approach is evaluated. Landsat Thematic Mapper data along with ground truth are used to define training cells that characterize the various lithologic units in the area. By aggregating the radar data for these cells, curves of radar reflectance versus local incidence are estimated. The curves are then used to classify the test area. The results are compared with lithologic classification based upon multi-spectral (visible and infrared) data.
Document ID
Document Type
Reprint (Version printed in journal)
Parr, J. T. (Analytic Sciences Corp. Reading, MA, United States)
Sailor, R. V. (Analytic Sciences Corp. Reading, MA, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1984
Publication Information
Publication: JPL The SIR-B Sci. Invest. Plan
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19850008899Analytic PrimaryThe SIR-B science investigations plan