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Managing the On-Board Data Storage, Acknowledgement and Retransmission System for SpitzerThe Spitzer Space Telescope has a two-phase downlink system. Recorded data are transmitted during one telecom session. Then commands are sent during the next session to delete those data that were received on the ground and to retransmit those data that were missed. We must build science sequences that are as efficient as possible to make the best use of our supply of liquid helium. One way to improve efficiency is to use only the minimum time needed during telecom sessions to transmit the predicted volume of data. But, we must also not fill the on-board storage and must allow enough time margin to retransmit missed data. We describe tools and procedures that allow us to build science sequences that are single-fault tolerant in this regard and that allow us to recover quickly and safely from anomalies that affect the receipt or acknowledgment (i.e. deletion) of data.
Document ID
20060051771
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Sarrel, Marc A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Carrion, Carlos
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hunt, Joseph C., Jr.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Space Sciences (General)
Report/Patent Number
AIAA Paper 2006-5564
Meeting Information
Meeting: AIAA 9th International Conference on Space Operations (SpaceOps)
Location: Rome
Country: Italy
Start Date: June 19, 2006
End Date: June 23, 2006
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Other
Keywords
on-board storage
Spitzer Space Telescope

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