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Working models for the gravitational field of Phobos

Shi, Xian; Willner, Konrad; Oberst, Jürgen +2 more

Models for the gravitational field of Mars moon Phobos were developed using the latest shape model and assuming homogeneous density distribution. Three methods were applied in our study. Comparisons were made between these methods and all were shown to yield consistent results. Notably, the most accurate shape model of Phobos to date, complete up …

Martian ionogram scaling by the Object Tracking Method

Ping, JinSong; Wang, MingYuan

The Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) onboard the Mars Express (MEX) spacecraft started to collect data of the Martian topside ionosphere from May, 2005. By now a large amount of ionograms has been obtained. It is important to extract vertical ionospheric information effectively from the ionograms for further stud…

Implementation of the Earth-based planetary radio occultation inversion technique

Ping, JinSong; Zhang, SuJun; Han, TingTing +2 more

The planetary radio occultation technique is one of the earliest suggested and achieved methods to detect the planetary atmosphere, and has been conducted by almost every deep space planetary probe. The principles, modules, inversion results and primary analysis of the SHAO Planetary Occultation observation Processing system (SPOPs) are presented …