Computer Science – Sound
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980p%26ss...28..549h&link_type=abstract
Planetary and Space Science, vol. 28, May 1980, p. 549-558.
Computer Science
Sound
1
Astrodynamics, Earth Rotation, Orbit Calculation, Rocket Sounding, Upper Atmosphere, Computer Programs, Optical Measuring Instruments, Orbit Perturbation, Orbital Elements, Perigees, Radar Measurement, Scale Height
Scientific paper
The orbit of CHINA 6 rocket, 1976-87B, has been determined at 51 epochs during its 17 month life, using the RAE orbit refinement computer program, PROP 6, with over 4000 radar and optical observations. The rotation rate of the upper atmosphere in lambda rev/day, for the height-band of 200-230 km, was calculated from the decrease in orbital inclination to give the following results: (1) for morning conditions, lambda = 0.9 for May-June and Aug.-Sept. 1977, at 215 km mean height, and it is 0.7 for Oct.-Nov. 1977, at 210 km, (2) for evening conditions, lambda = 1.2 for July and Sept.-Oct. 1977, at 215 km, and (3) for mean (morning plus evening) conditions, lambda = 1.0 plus or minus 0.1 between Oct. 1976 and May 1977, at 230 km, and 0.8 plus or minus 0.1 for Dec. 1977 to Jan. 1978, at 215 km and mean latitude of 57 deg S.
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