The effect of atmospheric winds on satellite orbits of high eccentricity

Physics

Scientific paper

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Eccentricity, Meridional Flow, Orbital Elements, Periodic Variations, Satellite Orbits, Wind Effects, Atmospheric Density, Orbit Calculation, Orbit Perturbation, Upper Atmosphere, Wind Variations

Scientific paper

A theory is developed to account for the effect of zonal and meridional winds on the inclination and right ascension of the node for satellites in orbits with eccentricity greater than 2 moving in an oblate atmosphere. The scale height of the atmosphere is assumed to be constant, but the effect of variations in H can be allowed for by evaluating H at 3/4 of a scale height above perigee. Day-to-day variations in density have negligible effects. The expressions derived in terms of the change in orbital period are independent of variations in air density or satellite cross-sectional area; they are also unaffected by lunisolar perturbations unless these are large during one revolution of the satellite. The results have already been sucessfully applied by King-Hele (1976) to determine upper-atmosphere winds at heights near 110 km from the orbit of 1970-114F.

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