The New Horizons Radio Science Experiment
نویسنده
چکیده
The New Horizons (NH) Radio Science Experiment, REX, is designed to determine conditions on Pluto as manifest in the atmospheric state at the surface and a few scale heights higher. Expected absolute accuracies in n, p, and T at the surface are 4·10 m−3, 0.1 Pa, and 3 K, respectively, obtained by radio occultation of a 4.2 cm-λ signal transmitted from Earth at 10–30 kW and received at the NH spacecraft. The threshold for ionospheric observations is roughly 2·10 m−3. Radio occultation experiments are planned for both Pluto and Charon, but the level of accuracy is expected to be useful for the c © 2007 Springer Science + Business Media. Printed in the USA. REX_SSR_submission_8jan07.tex; 8/01/2007; 21:02; p.1
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