NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Orbit Determination and Navigation of the Time History of Events and Macroscale Interactions during Substorms (THEMIS)This paper provides an overview of the launch and early orbit activities performed by the NASA Goddard Space Flight Center's (GSFC) Flight Dynamics Facility (FDF) in support of five probes comprising the Time History of Events and Macroscale Interactions during Substorms (THEMIS) spacecraft. The FDF was tasked to support THEMIS in a limited capacity providing backup orbit determination support for validation purposes for all five THEMIS probes during launch plus 30 days in coordination with University of California Berkeley Flight Dynamics Center (UCB/FDC)2. The FDF's orbit determination responsibilities were originally planned to be as a backup to the UCB/FDC for validation purposes only. However, various challenges early on in the mission and a Spacecraft Emergency declared thirty hours after launch placed the FDF team in the role of providing the orbit solutions that enabled contact with each of the probes and the eventual termination of the Spacecraft Emergency. This paper details the challenges and various techniques used by the GSFC FDF team to successfully perform orbit determination for all five THEMIS probes during the early mission. In addition, actual THEMIS orbit determination results are presented spanning the launch and early orbit mission phase. Lastly, this paper enumerates lessons learned from the THEMIS mission, as well as demonstrates the broad range of resources and capabilities within the FDF for supporting critical launch and early orbit navigation activities, especially challenging for constellation missions.
Document ID
20080012701
Document Type
Conference Paper
Authors
Morinelli, Patrick (AI Solutions, Inc. Lanham, MD, United States)
Cosgrove, Jennifer (AI Solutions, Inc. Lanham, MD, United States)
Blizzard, Mike (AI Solutions, Inc. Lanham, MD, United States)
Robertson, Mike (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
September 24, 2007
Publication Information
Publication: Proceedings of the 20th International Symposium on Space Flight Dynamics
Subject Category
Astrodynamics
Funding Number(s)
CONTRACT_GRANT: FDF-28-012
CONTRACT_GRANT: NNG04DA01C
Distribution Limits
Public
Copyright
Public Use Permitted.

Available Downloads

NameType 20080012701.pdf STI

Related Records

IDRelationTitle20080012629Analytic PrimaryProceedings of the 20th International Symposium on Space Flight Dynamics