Computer Science – Sound
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jgre..108.5132c&link_type=abstract
Journal of Geophysical Research, Volume 108, Issue E12, pp. 6-1, CiteID 5132, DOI 10.1029/2003JE002164
Computer Science
Sound
2
Planetary Sciences: Remote Sensing, Planetary Sciences: Instruments And Techniques, Planetary Sciences: Surface Materials And Properties
Scientific paper
We examine the relative importance of coherent and incoherent echo components in near-nadir radar scattering from self-affine surfaces. The coherent component, important only for observations at small incidence angles (nadir-looking sounders and altimeters), is a function of both surface roughness and scattering area. Models for the incoherent component require a minimum scattering area for validity; for smaller regions, the radar echo is overestimated. We propose a simple criterion for the horizontal scale that defines this shift in applicable scattering model and show the range of roughness parameters for which MARSIS, SHARAD, and possibly JIMO radar sounder measurements may be modeled using the two approaches.
Campbell Bruce A.
Shepard Michael K.
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