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National Environmental Satellite, Data, and Information Service (NESDIS)

National Environmental Satellite, Data, and Information Service (NESDIS) . Low-Rate Information Transmission (LRIT) IMPLEMENTATION and TRANSITION PLAN December 10, 2002. NESDIS LRIT Implementation Plan. Background

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National Environmental Satellite, Data, and Information Service (NESDIS)

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  1. National Environmental Satellite, Data, and Information Service (NESDIS) Low-Rate Information Transmission (LRIT) IMPLEMENTATION and TRANSITION PLAN December 10, 2002

  2. NESDIS LRIT Implementation Plan • Background • CGMS-XIX (1991) . . . Concept of replacement/growth of Weather Facsimile (WEFAX) initiated • CGMS-XXVI (1998) . . . Digital Low-rate Information Transmission (LRIT) on Geostationary Meteorological Satellites committed to by all participants - except the United States • Implementation planning dates established • Satellite and Launch Date • CGMS-XXVII (1999) . . . U.S. announced plans for LRIT on GOES I-M/January 2003

  3. NESDIS LRIT Implementation Plan • LRIT Technical Development • Primary CONCERNS voiced by WMO in behalf of the ‘user community’ • Costs of LRIT receiving equipment - “affordable” • Lead time for transition to LRIT • LRIT Content

  4. NESDIS LRIT Implementation Plan • Receive Equipment Costs • Spacecraft Transponder Output Power [EIRP] • CCSDS Format & Forward Error Correcting Coding • Enhanced Data Sets • User-Terminal Processing • Transition Lead Time and Methods • 2-years away from a full Operational LRIT on GOES • A single GOES cannot support simultaneous WEFAX/LRIT. . . It will be WEFAX-OR-LRIT!

  5. NESDIS LRIT Implementation Plan • LRIT Content • Operator Controlled • “Day-1” will be the current WEFAX Product Set • “Day-2” will be determined by the NESDIS/NWS Satellite Products and Service’s Review Board (SPSRB) Services Oversight Panel

  6. NESDIS LRIT Implementation Plan • THE PLAN -- • NESDIS performed a study to determine the architecture and resources necessary to produce the LRIT Service. (April 2001) • Systems requirements definition and analysis, including architectures, costs, and schedules • Product generation requirements (NESDIS and non-NOAA satellite imagery and products, and NWS forecast and model products) • “User” Transition Concept for conversion from WEFAX • Traditional end-User, and user-station manufacturers

  7. NESDIS LRIT Implementation Plan • THE PLAN -- (continued) • NESDIS developed prototype LRIT receiver requirements (November 2002) • NESDIS made information available on the “Impacts” of LRIT on present (WEFAX) user-stations (December 2002) • NESDIS defined the “Day-1” Product Suite (December 2001)

  8. NESDIS LRIT Implementation Plan • THE PLAN -- (continued) • NESDIS provided detailed LRIT Test Transmission Content and Schedule (November 2002) • NESDIS will announce to the WMO and the User Community the final schedule for transition to and operation of LRIT (November 2002)

  9. NESDIS LRIT Implementation Plan • THE PLAN -- Technical Milestones • NESDIS conducted an evaluation/validation of the LRIT communications performance -- spacecraft transponder, transmission format, and receiver systems requirements (April 2001) • NESDIS LRIT uplink/downlink test system (October 2001) • NESDIS provides live LRIT test transmissions through a spare GOES

  10. NESDIS LRIT Implementation Plan • THE PLAN -- Technical Milestones • Operational LRIT begins on GOES-EAST • January 2003 (Alternating LRIT and GOES-EAST WEFAX transmissions) • Operational LRIT begins on GOES-WEST • As soon as practical after May 2003 (Alternating LRIT and GOES-WEST WEFAX transmissions)

  11. NESDIS LRIT Implementation Plan • Three Major issues are currently being worked by NESDIS to ensure successful implementation and utilization of NOAA LRIT services: • Validation and Testing of LRIT Communications Parameters • Design and Implementation of NOAA LRIT Ground Systems • Development and Availability of Affordable LRIT User-terminals

  12. NESDIS LRIT Implementation Plan • Communications Parameters • NESDIS RF Test Equipment, supplemented by METEOSAT LRIT Test and User-terminal Ground Systems • Spare in-orbit GOES-I/M Spacecraft • GOES-N Spacecraft in-plant at Boeing • NOAA LRIT Ground Processing System • Prototype NOAA LRIT user terminal

  13. NESDIS LRIT Implementation Plan • NOAA LRIT Ground System • Architecture Definition and Design Completed • Contractual Mechanisms in-place for Implementation • “Day-1” Products Exist • Data Communications Links Exist

  14. NESDIS LRIT Implementation Plan • Affordable User Terminals • European and Japanese versions exist • Chip-sets reduce front-end receive system risks • NESDIS working with the manufacturer to provide early, stable requirements for development

  15. USA Plan of Satellite Operation and Data Dissemination Operational Back-up 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 GOES-8 Operational Back-up GOES-10 Operational Test GOES-11 Launch Test Operational GOES-12 Launch Operational Test GOES-N Launch WEFAX WEFAX/ LRIT LRIT

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