Mathematics – Probability
Scientific paper
Jun 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...28..301l&link_type=abstract
Icarus, vol. 28, June 1976, p. 301-306.
Mathematics
Probability
1
Mars Surface, Power Spectra, Probability Density Functions, Radar Echoes, Signal Reflection, Diffuse Radiation, Radar Scattering, Signal Stabilization, Signal To Noise Ratios, Specular Reflection
Scientific paper
A method is described for stabilizing the inversion of the power spectra of comparatively weak radar echoes from Mars. It is noted that such stabilization is necessary for echoes with S/N power-spectral densities of order unity as well as for those with broad spectral distributions. The method is applied to the Martian surface, using two data sets obtained with radars of approximately 12.5-cm wavelength. The resulting slope probabilities are interpreted in terms of diffuse and quasi-specular scatter, and values of rms slope are calculated. The results for a sample of Martian locations clearly indicate extreme variations in the local nature of the surface and yield evidence for an apparent planetwide distribution of roughness that may be due to extreme slopes, surface or subsurface rock populations, or a combination of these.
Lipa B.
Tyler Leonard G.
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