Critical Design Review

• "Prototype Design" (WP250) - The practical implementation of the GGSP prototype was prepared. The facilities for data collection, processing, combination, validation and archiving were described in detail.
• "Realisation Plan" (WP260) - The initial GTRF realisation with the focus to network candidates and optimal station distribution was presented.
• "Validation Plan" (WP270) - On the basis of the requirements for the GGSP prototype and the prototype design procedures for the validation of the intial realisation were given.
• "Maintenance Plan" (WP280) - The mechanism for the GTRF maintenance was described taking into consideration other important products like satellite orbits, Earth rotation parameters as well as satellite and station clocks..
• "GGSP Requirements Document - Update" (WP220) - The internal and external requirements to the GGSP prototype are defined and summarized.
• "GGSP Prototype External ICD - Part 2" (WP230) - Interfaces between the GGSP prototype and all relevant external entities are described.