Electromagnetic wave scattering at near-grazing incidence from a gently undulating, rough surfaceModels to estimate the reflection coefficient of a statistically rough surface, for example the works of Beckmann, Smith, and Vesecky are discussed. Bistatic radar experiments carried out during the Apollo 16 mission provide a data set with which to compare theoretical models and experimental data. These bistatic S-band radar experiments provide experimental estimates of the Moon's bistatic, forward scatter, reflection coefficient for grazing angles of 2.5 to 78 deg. Theoretical expressions for the reflection coefficient are developed for comparison with these experimental data. At grazing angles below 10 deg the models of Smith and Vesecky compare favorably with the data. Beckmann's model falls significantly more rapidly with decreasing grazing angle than does the data.
Vesecky, J. F. (Stanford Univ. CA., United States)
Sperley, E. J. (Stanford Univ. CA., United States)
Zebker, H. A. (Jet Propulsion Lab. California Inst. of Tech., Pasadena., United States)
Date Acquired
September 5, 2013
Publication Date
August 1, 1988
Publication Information
Publication: ESA, Proceedings of the 1988 International Geoscience and Remote Sensing Symposium (IGARSS) '88 on Remote Sensing: Moving Towards the 21st Century, Volume 3