DocumentCode :
1084614
Title :
Unified full wave solutions to interpret Apollo lunar surface data
Author :
Bahar, E. ; Haugland, M.
Author_Institution :
Dept. of Electr. Eng., Nebraska Univ., Lincoln, NE, USA
Volume :
32
Issue :
1
fYear :
1994
fDate :
1/1/1994 12:00:00 AM
Firstpage :
72
Lastpage :
77
Abstract :
Bistatic radar experiments carried out by Tyler and Howard during the Apollo 14, 15, and 16 missions provide a very useful dataset with which to compare theoretical models and experimental data. Vesecky et al. (1988) report that their model for near grazing angles compares favorably to experimental data. However, for angles of incidence around 80°, all the analytical models considered by Vesecky et al. predict values for the quasi-specular cross sections that are about half the corresponding values taken from the Apollo 16 data. In this work, questions raised by this discrepancy between the reported analytical and experimental results are addressed. The unified full wave solutions are shown to be in good agreement with the bistatic radar data taken during Apollo 14 and 16 missions. Using the full wave approach, the quasi-specular contributions to the scattered field from the large scale surface roughness as well as the diffuse Bragg-like scattering from the small scale surface roughness are accounted for in a unified self-consistent manner. Since the full wave computer codes for the scattering cross sections contain ground truth data only, it is shown how it can be readily used to predict the rough surface parameters, based on the measured data
Keywords :
Moon; electromagnetic wave scattering; geophysical techniques; planetary surfaces; radar cross-sections; radioastronomical techniques; radioastronomy; remote sensing; remote sensing by radar; Apollo; Moon lunar surface; bistatic radar; diffuse Bragg-like scattering; geophysical remote sensing; grazing angle; land surface; quasi-specular cross section; radar astronomy; radioastronomy measurement technique; surface roughness; theoretical model; unified full wave solution; Bistatic radar; Electromagnetic scattering; Moon; Optical scattering; Optical surface waves; Radar scattering; Rayleigh scattering; Rough surfaces; Surface roughness; Surface waves;
fLanguage :
English
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
Publisher :
ieee
ISSN :
0196-2892
Type :
jour
DOI :
10.1109/36.285190
Filename :
285190
Link To Document :
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