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CSS Splinter Session Notes -- File Transfer -- 26 Oct 2009

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Attendees• E. Barkley• F. Brosi• C. Haddow• A. Crowson• W. Hell• H. Kellliher• F. Mouy• N. Champsavoir• S. Gully• M. Dugast• M. di Giulio

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Use Cases Discussion• ETE File Transfer, incl orbiter last hop• Physical View

– MDOS A• MDOS B

– SLE COMPLEX» S/C A

• S/C B• Discussion

– FWD Service• Emergency Commanding

– MDOS A | MDOS B --> interoperability/cross support interface?» (coordination for data transfer S/C A --> S/C B)

– Is this (last hop commanding) best considered as an application level service ?– if emergency commands are cached at ground station what triggers their radiation?

» csts "real-time" control service?» is this indicated /coordinated as part of service package?

• Potentially also used for "off-line" or “unattended “commanding?– RTN Service

• (Essential) Telemetry– Does this fill a "gap"/provide off-line retrieval for telemetry data relative to CSTS service– presumably entails some sort of catalog query to determine telemetry files available for

retrieval?• Validated radiometric data + raw DDOR data

– File transfer seems like a good mechanism for this

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"protocol" discussion• where is the CFDP terminus located? ground station? MDOS?

– If @ MDOS • much/all of this is transparent relative to CSTS ?

– if terminated at ground station, • what does data management look like?

– e.g., catalog, purge dates, etc.• if a true generic file transfer is needed (MDOS <-- --> Ground Station)

– sftp based– need meta data associated with "payload"– need action specifications relative to transferred "payload"

• e.g., raw DDOR data transferred, now what?• e.g, how is command radiation initiated if cached at ground station via previous

file transfer

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Actions:

• W. Hell: Ciruclate IOAG Service Catalog 1 Book (done)

• E. Barkley: provide rough notes (done)