GeoXO Spacecraft Final RFP Questions and Answers 3.pdf
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- Geostationary Extended Observations (GeoXO) Spacecraft (SC) Phase B Implementation- Final RFP Federal contract opportunity
- Solicitation number
- 80GSFC23R0010F
About this file
This document contains questions and answers regarding a final request for proposal for the Geostationary Extended Observations Spacecraft Phase B Implementation. The questions and answers provide clarification on spacecraft requirements and instrument data packets. Specifically, it defines instrument low-rate health and safety packets, confirming they are generated by the instruments to contain non-critical telemetry data at a rate less than 100 bits per second when averaged over 16 seconds. The related federal contract opportunity is solicitation number 80GSFC23R0010F issued by the National Aeronautics and Space Administration Goddard Space Center for the Geostationary Extended Observations Spacecraft Phase B Implementation.
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GeoXO Spacecraft Final RFP Questions and Answers #3
Question:
In reference to Attachment A-418-XO-SCSOW-0122_V_1_0_final.pdf- The two requirements below (SCFPS846/852) mention "Instrument Low-Rate H&S (LRHS) packets" as different packets than instrument housekeeping packets. While housekeeping packets are defined in various instrument UUIDs and the GIRD, there is no definition of Instrument LRHS packets in any of the specifications provided as part of the Final RFP. Please provide a definition for Instrument LRHS packets. Are these packets generated by the instrument or perhaps critical telemetry and/or non-critical telemetry collected by the spacecraft as defined in GIRD 22 formulated into packets?
SCFPS846 - The Spacecraft shall include Instrument Low-Rate H&S (LRHS) packets when configured in the high-rate ORTTC link. (CCR-X00220)
SCFPS852 - The Spacecraft shall include Instrument Low-Rate H&S (LRHS) packets when configured in the low-rate CDAS link. (CCR-X00220)
GIRD24 - Housekeeping telemetry - data required to monitor instrument operation, health, and safety.
GIRD22 - Critical telemetry - telemetry points that are required to monitor the instrument in powered OFF state.
Non-critical telemetry - telemetry points that are required to monitor the instrument in powered ON state.
Answer:
These packets are generated by the instruments. These requirements currently exist in the ACX, OCX and PTR Instrument UIIDs. The same requirements are in process of being added for GXI, GXS and LMX but will not be in the UIIDs until after Spacecraft contract award.
Please see Attachment F-4 for OCX UIID, requirements OCXUIID131 and OCXUIID132.
OCXUIID131: The OCX shall generate Instrument Low-Rate Health & Safety (LRHS) packets containing Non-critical Telemetry. (CCR-X00233) OCXUIID132: The data rate for the Instrument LRHS packets shall be less than or equal to 100 bits per second when averaged over 16 seconds. (CCR-X00233).
Please see Attachment F-5 for ACX UIID, requirements ACXUIID137 and ACXUIID138.
Please see Attachment F-6 for PTR UIID, requirements PTRUIID112 and PTRUIID113.
End of Questions and Answers #3
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