Upper-atmosphere studies by ranging to satellites

Details Upper-atmosphere studies by ranging to satellites Upper-atmosphere studies by ranging to satellites

May 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977rspta.284..555k&link_type=abstract

(Royal Society, Discussion on Methods and Applications of Ranging to Artificial Satellites and the Moon, London, England, Feb. 2

Statistics

Applications

Aerodynamic Forces, Laser Ranger/Tracker, Satellite Perturbation, Satellite Tracking, Upper Atmosphere, Wind Effects, Atmospheric Circulation, Orbit Calculation, Orbital Elements, Satellite Orbits, Scale Height

Scientific paper

By using laser ranging to study the ways aerodynamic forces cause perturbations in upper-atmosphere satellite orbits, more accurate values for wind, scale height, temperature, and density will be obtained. At heights between 200 and 1000 km, the air density may vary by a factor of up to 100 over a solar cycle, by a factor of up to 6 between day and night, and irregularly by a factor of 2, or sometimes even 5, in response to solar storms. This region of the atmosphere is often swept by winds with speeds up to 200 m/sec, and occasionally by winds of 500 to 1000 m/sec. Laser ranging will provide information on the winds which tend to control the energy balance, and are difficult to measure directly.

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