The Geostationary Operational Environmental Satellite (GOES)-8 experienced a series of orbital perturbations from autonomous attitude control thrusting before perigee raising maneuvers. These perturbations influenced differential correction orbital state solutions determined by the Goddard Space Flight Center (GSFC) Goddard Trajectory Determination System (GTDS). The maneuvers induced significant variations in the converged state vector for solutions using increasingly longer tracking data spans. These solutions were used for planning perigee maneuvers as well as initial estimates for orbit solutions used to evaluate the effectiveness of the perigee raising maneuvers. This paper discusses models for the incorporation of attitude thrust effects into the orbit determination process. Results from definitive attitude solutions are modeled as impulsive thrusts in orbit determination solutions created for GOES-8 mission support. Due to the attitude orientation of GOES-8, analysis results are presented that attempt to absorb the effects of attitude thrusting by including a solution for the coefficient of reflectivity, C(R). Models to represent the attitude maneuvers are tested against orbit determination solutions generated during real-time support of the GOES-8 mission. The modeling techniques discussed in this investigation offer benefits to the remaining missions in the GOES NEXT series. Similar missions with large autonomous attitude control thrusting, such as the Solar and Heliospheric Observatory (SOHO) spacecraft and the INTELSAT series, may also benefit from these results.
Evaluation and Modeling of Autonomous Attitude Thrust Control for the Geostation Operational Environmental Satellite (GOES)-8 Orbit Determination
1995
13 pages
Report
No indication
English
Astronautics , Spacecraft Trajectories & Flight Mechanics , Attitude control , Automatic control , Goes satellites , Mathematical models , Orbit calculation , Orbit perturbation , Perigees , Satellite orientation , Satellite tracking , Spacecraft maneuvers , Thrust control , Coefficients , Flight paths , Goddard trajectory determination system , Orbital position estimation , Real time operation , Reflectance , State estimation , State vectors
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