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GOES-R Glossary of Terms


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For a complete list of GOES-R Acronyms & Glossary. . . click here (pdf)

Handover   The formal change of responsibility from one organization to another.

Hardware

   As used in this document, there are two major categories of hardware as follows:
  1. Prototype Hardware: Hardware of a new design; it is subject to a design qualification test program; it is not intended for flight.
  2. Flight Hardware: Hardware to be used operationally in space.
    1. Protoflight Hardware: Flight hardware of a new design; it is subject to a qualification test program that combines elements of prototype and flight acceptance validation; that is, the application of design qualification test levels and duration of flight acceptance tests.
    2. Follow-On Hardware: Flight hardware built in accordance with a design that has been qualified either as prototype or as protoflight hardware; follow-on hardware is subject to a flight acceptance test program.
    3. Spare Hardware: Hardware the design of which has been proven in a design qualification test program; it is subject to a flight acceptance test program and is used to replace flight hardware that is no longer acceptable for flight.
Hazardous Command   A command whose execution (including inadvertent, out-of-sequence, or incorrectly executed) could lead to an identified critical or catastrophic hazard, or a command whose execution can lead to a reduction in the control of a hazard (including reduction in failure tolerance against a hazard or the elimination of an inhibit against a hazard).
Heartbeat   A message sent by client software to its server indicating an online status
High fidelity simulation   Recreating a functional element’s capability in such a way as to be nearly indistinguishable from the physical reality; very faithful to the original.
Housekeeping   The set of activities or resources periodically invoked to maintain the satellite within mission-acceptable parameters and in a condition to provide full mission objectives.
Housekeeping Telemetry   Data required to monitor instrument and/or observatory operation, health, and safety

 
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