Tool for Planning Radio Scattering Experiments from Planetary Surfaces with Orbiting Spacecraft

Statistics – Methodology

Scientific paper

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Scientific paper

Spacecraft orbiting solar system bodies with a radio link to receiving stations on the Earth can carry out a class of radio science experiments commonly called bistatic radar (BSR). Radio signals from the spacecraft, incident on the target's surface near the Brewster angle, are changed during the reflection process. Careful analysis of the echo characteristics -especially the Doppler dispersion and polarization- allows inference of surface slopes and dielectric constant of the surface material on scales comparable to the wavelength. A new software tool has been developed to plan such surface scattering experiments with the Dawn spacecraft at Vesta and Ceres. We present the theory and methodology behind the algorithm and example products.

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