The Air Force Space Command's Thermospheric Density Modeling for Accurate Satellite Tracking

Details The Air Force Space Command's Thermospheric Density Modeling for Accurate Satellite Tracking The Air Force Space Command's Thermospheric Density Modeling for Accurate Satellite Tracking

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsa11a..01b&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SA11A-01

Physics

0350 Pressure, Density, And Temperature, 0358 Thermosphere: Energy Deposition (3369), 7969 Satellite Drag (1241)

Scientific paper

The Air Force Space Command has the responsibility of tracking all satellites in earth orbit to maintain an accurate satellite catalog. Recent developments in thermospheric modeling have led to improved satellite position accuracies for the special perturbation catalog. The High Accuracy Satellite Drag Model was developed using numerous calibration satellites to obtain real time density corrections. In addition a new empirical atmospheric density model was developed using the CIRA72 (Jacchia 71) model as the basis for the diffusion equations. New solar indices based on orbit-based sensor data are used for the solar irradiances in the extreme and far ultraviolet wavelengths. New exospheric temperature and semiannual density equations are employed to represent the major thermospheric density variations. Temperature correction equations are also developed for diurnal and latitudinal effects, and finally density correction factors are used for model corrections required at high altitude (1500-4000 km). The new model, Jacchia-Bowman 2006, is validated through comparisons of accurate daily density drag data previously computed for numerous satellites.

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