Numerical simulations of the Netlander Ionosphere and Geodesy Experiment (NEIGE): landing site positions determination from Doppler tracking between an orbiter and landers

Details Numerical simulations of the Netlander Ionosphere and Geodesy Experiment (NEIGE): landing site positions determination from Doppler tracking between an orbiter and landers Numerical simulations of the Netlander Ionosphere and Geodesy Experiment (NEIGE): landing site positions determination from Doppler tracking between an orbiter and landers

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.544..351v&link_type=abstract

In: Proceedings of the International Workshop Planetary Probe Atmospheric Entry and Descent Trajectory Analysis and Science, 6-9

Physics

Numerical Simulations, Geodesy Experiment, Neige

Scientific paper

The objectives of a geodesy experiment performed on the basis of a network of landers, such as NEIGE (Netlander Ionosphere and Geodesy Experiment) are to measure variations of Mars' orientation and rotation in space with a precision of a few centimeters over annual and sub-annual period. The lander positions are not well known upon landing, depending on the technical solution chosen for the entry-descent-landing phase, and thus need to be accurately determined to achieve the scientific objectives of a geodetic experiment. We performed numerical simulations of the NEIGE experiment to evaluate our ability to recover the lander positions from Doppler shifts measurements between an orbiter around Mars and those landers, with a precision of a few centimeters.

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