Estimation of planetary surface roughness using radio sounder A-scope data

T. Kobayashi, T. Ono

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We propose a simple technique to estimate a roughness parameter, RMS gradient, of a planetary surface. The technique is practiced on A-scope data of radio sounding observation of planet with a simple formula. The formula was derived analytically for the case of Gaussian random rough surface using a geometrical optics model. The technique was examined by simulations of planetary sounding observations which is based on physical optics, and demonstrated to estimate the RMS gradient of the planetary surface in the range from some fraction of degrees to about ten degrees. Finally, the upper limit of valid range of RMS gradient was formulized as a function of observation altitude and the maximum detection range.

Original languageEnglish
Article numberE06S10
JournalJournal of Geophysical Research: Planets
Issue number6
Publication statusPublished - 2006 Jun 20
Externally publishedYes

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Atmospheric Science
  • Astronomy and Astrophysics
  • Oceanography


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