G. Leonard Tyler

TL;DR: The strength of the lithosphere beneath the ancient southern highlands suggests that the northern hemisphere was a locus of high heat flow early in martian history and the thickness of the elastic lithosphere increases with time of loading in the northern plains and Tharsis.

TL;DR: The European Space Agency Venus Express Radio Science experiment (VeRa) as mentioned in this paper obtained 118 radio occultation measurements of the Venusian atmosphere between July 2006 and June 2007, which are converted to profiles of temperature (T) and pressure (p) versus height (h).

TL;DR: The theory underlying the determination of the particle size distribution, including differential extinction and inversion of the scattered signal, is presented in this article, and the results for the observed spectra, differential cross sections, suprameter and sub-to-suprameter size distributions are presented.

TL;DR: In this article, the authors used the 3.6-cm λ radio path of the Mars Global Surveyor (MGS) during periods of atmospheric occultation to estimate the vertical temperature-pressure structure T[p(r)] to accuracies at the surface of ΔT ≈ 0.4 K and Δp ≈ 2 Pa, and ∼10 K and ∼0.6 Pa at altitudes of 40-50 km; the error in radius is Δr ≈ 1 m at all levels.

TL;DR: In this article, the Huygens-Fresnel formulation of the diffraction problem is used to correct for diffraction effects in radio occultation measurements and the reciprocal Fresnel transform relationship between the complex amplitude of the observed coherent signal and the complex microwave transmittance of the rings is derived.