TOPEX/Poseidon End-of-Life Navigation Operations and Decommissioning Summary
2008
TOPEX/Poseidon was launched on August 10, 1992 and decommissioned 13 years later on October 9, 2005. Considering the satellite mission’s age, its primary mission lifetime design of 5 years, and its decreasing mission budget profile, TOPEX/Poseidon posed significant navigation challenges during the latter part of its lifetime. This paper describes the navigation products and services required to maintain TOPEX/Poseidon in its operational orbit given the primary science requirement that 95% of all TOPEX/Poseidon equatorial crossings occur within +1 km of a pre-defined reference ground track. The paper also talks about the navigation strategies, the Orbital Maintenance Maneuver (OMM) history of TOPEX/Poseidon, and the TOPEX/Poseidon Orbit Transfer Maneuvers (TOTM) campaign. Finally, several cost cutting initiatives are discussed as well as the orbit disposal and decommissioning strategy.
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