O2O Ground Segment (O2OGS)

The O2O Ground Segment (O2OGS) enables the demonstration of Operational Utility of Optical Communications for Human Spaceflight by implementing an Optical Ground Segment compatible with the (O2O Flight Segment) at White Sands Complex, NM, and Table Mountain, CA. O2OGS integrates with the O2O Space Segment and O2O Operations Segment to meet O2O DTO Objectives.

The O2O DTO provides an optical communications service during the Artemis II mission. This service provides an alternate, high-speed communications channel to the Orion capsule that offloads the bandwidth-constrained S-band RF link from the DSN. This allows Orion to still download the significant volume of non-critical data collected during the 10-day mission and focus the use of RF link for mission critical data.

Goals:

• Maximize reuse of LLGT system. LLGT hardware/software will only be modified as needed.
• Reused: LLGT dome, trailer, mount, gimbal, football helmet, 2 receive telescopes, 3 transmit telescope, ~50% of transmitter, tracking control servers and software, backend electronics for telescopes
• New: Electrical/HVAC, 1 transmit telescope, High Power Optical Amplifiers, Detector Assembly, Ground Signal Processing Assembly, ground data element, ground segment operations and analysis element, ~50% of transmitter, central monitoring and control software
• Development, implementation, test and operation of the O2OGT-WSC, GDE, and GSOA.
• V&V for all L4 and L5 O2OGT-WSC, GDE and GSOA element requirements.
• V&V for all L3 ground segment requirements, including L3 requirements that trace to O2OGT-TMF L4 requirements.
• Serving as the single operational interface between the O2OGS and the Mission Control Center at JSC.
• Performing all ground segment service management and accounting functions during operations.
• Coordinating all other non-operational ground segment experiment activities with JSC and LEMNOS and generating pointing files, as directed

Demonstrates and validates optical ground station performance metrics for the O2O Orion optical comm system. The O2O DTO provides an optical communications service during the Artemis II mission. This service provides an alternate, high-speed communications channel to the Orion capsule that offloads the bandwidth-constrained S-band RF link from the DSN. This allows Orion to still download the significant volume of non-critical data collected during the 10-day mission and focus the use of RF link for mission critical data.

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