B. L. Seidel

TL;DR: Mariner-9 S-band radio occultation measurements conducted during November and December 1971 are described in terms of new information that was obtained about the shape and atmosphere of Mars as mentioned in this paper.

TL;DR: In this article, radio occultation measurements from Mariner 9 orbits around Mars show that the radius of Mars changes by only about 2 km from a latitude of 65 deg to the north pole, and that polar temperature profiles are indicative of the possibility that the remnant north polar cap may be at least partially composed of water ice.

TL;DR: The preliminary analysis of data from the Pioneer 10 S-band radio occultation experinment has revealed the presence of an ionosphere on the Jovian satellite Io having an electron density peak of about 6 x 104 electrons per cubic centimeter.

TL;DR: Analysis of the Doppler tracking data near encounter yields a value for the ratio of the mass of the sun to that of Venus of 408,523.9 � 1.2, which is in good agreement with prior determinations based on data from Mariner 2 and Mariner 5.

TL;DR: The Pioneer 10 spacecraft by Io (JI) provided an opportunity to obtain two S-band radio occultation measurements of its atmosphere as mentioned in this paper, which revealed an ionosphere having a peak density of about 60,000 el/cu cm at an altitude of about 100 km.