Selection of a model of Earth's albedo radiation, practical calculation of its effect on the trajectory of a satellite

Statistics – Computation

Scientific paper

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Albedo, Earth (Planet), Earth Observations (From Space), Earth Surface, Infrared Spectra, Orbit Perturbation, Accelerometers, Fourier Analysis, Lageos (Satellite), Mathematical Models, Solar Energy

Scientific paper

Theoretical models of Earth's albedo radiation was proposed. By comparing disturbing accelerations computed from a model to those measured in flight with the CACTUS Accelerometer, modified according to the results. Computation of the satellite orbit perturbations from a model is very long because for each position of this satellite the fluxes coming from each elementary surface of the terrestrial portion visible from the satellite must be summed. The speed of computation is increased ten times without significant loss of accuracy thanks to a stocking of some intermediate results. Now it is possible to confront the orbit perturbations computed from the selected model with the measurements of these perturbations found with satellite as LAGEOS.

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