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Redundant Telemetry, Tracking, and Commanding System Architecture for High Mission Reliability

IP.com Disclosure Number: IPCOM000105118D
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Related People

Metcalf, MD: AUTHOR

Abstract

This article describes a redundant telemetry, tracking and commanding (TT&C) system architecture which provides overall high mission reliability. TT&C equipment is used to receive downlinked satellite telemetry, to track a satellite, and to uplink commands to a satellite. Typically, this equipment consists of an antenna and its associated amplifiers/RF components, receivers, pulse code modulation (PCM) processing equipment, decryptors, and downlink digital processing equipment for the telemetry reception and tracking functions, and uplink digital processing equipment, encryptor, RF modulator, high power amplifier, echo reception/decryption/processing, and an antenna for transmission of commands to the satellite. Usually, a common antenna is used for receiving the downlink and transmitting the uplink.

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Redundant Telemetry, Tracking, and Commanding System Architecture for High Mission Reliability

      This article describes a redundant telemetry, tracking and
commanding (TT&C) system architecture which provides overall high
mission reliability.  TT&C equipment is used to receive downlinked
satellite telemetry, to track a satellite, and to uplink commands to
a satellite.  Typically, this equipment consists of an antenna and
its associated amplifiers/RF components, receivers, pulse code
modulation (PCM) processing equipment, decryptors, and downlink
digital processing equipment for the telemetry reception and tracking
functions, and uplink digital processing equipment, encryptor, RF
modulator, high power amplifier, echo
reception/decryption/processing, and an antenna for transmission of
commands to the satellite.  Usually, a common antenna is used for
receiving the downlink and transmitting the uplink.

      The redundant TT&C system architecture includes the following
features:

o   Spare equipment, built into the TT&C architecture, which can be
    switched into operational TT&C function in place of failed or
    degraded equipment.
o   Status feedback of all TT&C equipment to centralized software for
    assessment and display of overall TT&C equipment status.
o   Automatic switching, controlled by centralized software and based
    upon assessment of reported status, to replace failed or degraded
    TT&C equipment.
o   Offline fault is...