Mars geodesy with NEIGE: simulation of the Martian orientation parameters estimation

Details Mars geodesy with NEIGE: simulation of the Martian orientation parameters estimation Mars geodesy with NEIGE: simulation of the Martian orientation parameters estimation

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.514..145y&link_type=abstract

In: Earth-like planets and moons. Proceedings of the 36th ESLAB Symposium, 3 - 8 June 2002, ESTEC, Noordwijk, The Netherlands. E

Physics

Mars: Geodesy, Rotation, Nutation, Neige

Scientific paper

By analysing the radio Doppler shifts between an orbiter around Mars and a set of landers on Mars surface, and between this orbiter and the Earth, the NEtlander Ionosphere and Geodesy Experiment (NEIGE) will provide Mars orientation parameters, particularly polar motion, nutation, and length-of-the-day (rotation rate) variations. Information about the martian core will be deduced from nutation estimations. Due to the small amount of data that will be obtained (a few observations each week), the experiment objectives will only be achieved if an adapted strategy for the parameter adjustment is established. We have simulated the NEIGE data and the modeling of the rotational parameters. After 50 weeks, we obtain a precision in polar motion and rotation speed amplitude estimation at the level of a few mas.

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