Definitive orbit determination for the HEAO-2 spacecraftPrecise ephemerides for the High Energy Astronomy Observatory-2 (HEAO-2) were computed to assist in the Charles Stark Draper Laboratory development of an onboard orbit determination technique. Weighted least-squares, batch orbit solutions were calculated using a high-precision earth gravity model and an approximate model for intermittent spacecraft thrusting. With these improvements, orbit solution consistencies at the 50- to 100-meter level were attained using the Goddard Trajectory Determination System and NASA S-band tracking data.
Document ID
19840047747
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Smith, R. L. (Computer Sciences Corp. Silver Spring, MD, United States)
Mallick, M. K. (Computer Sciences Corp. System Sciences Div., Silver Spring, MD, United States)