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E mergency M anagers W eather I nformation N etwork in the GOES-N Era: a Status Report

E mergency M anagers W eather I nformation N etwork in the GOES-N Era: a Status Report. WMO ISS September 2002. EMWIN. A system to provide timely watches, warnings, and forecasts to the nation’s emergency managers using NOAA’s GOES satellites and low cost user receive systems

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E mergency M anagers W eather I nformation N etwork in the GOES-N Era: a Status Report

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  1. EmergencyManagersWeatherInformationNetworkin the GOES-N Era: a Status Report WMO ISS September 2002

  2. EMWIN • A system to provide timely watches, warnings, and forecasts to the nation’s emergency managers using NOAA’s GOES satellites and low cost user receive systems • EMWIN is broadcast from GOES East and GOES West • EMWIN will be impacted as current GOES satellites are replaced by newer satellites

  3. EMWIN in GOES-N EraChanges • Reduced broadcast power • Complies with ITU power levels • Mitigated by use of Forward Error Correction and higher-order modulation • Broadcast frequency change • From: 1690.725MHz To: 1693.500MHz

  4. Impacts on Users • Receiving site changes required • Upgrade for FEC and modulation • Accommodation for frequency change • Receiving site antennas • Above 5o – no change • Below 5o – may require a larger antenna

  5. GOES East (75oW), Goes West (135oW)Visibility Contours Outer Ring is 5o Elevation Angle

  6. Transition to GOES-NGuiding Principles • Minimize impacts on users • Maintain at least the same level of service • Ensure EMWIN vendors are ready • Inform users of changes and schedule • Ensure graceful transition • Provide adequate time for users and NOAA to make changes • Avoid abrupt changes

  7. Transition to GOES-NApproach • Formed joint NESDIS/NWS coordination group • Actively planning the transition activities • NESDIS coordinating with receiver manufacturers • Sponsoring FEC and modulator prototype development • Fostering low cost receive systems through testing opportunities • NESDIS providing pro-active user community coordination • NWS providing timely user information

  8. Transition to GOES-NCoordination Group Activities • Recommended to NESDIS management the operation of a parallel broadcast of GOES-N EMWIN from a normally stored third satellite before GOES-N becomes operational • Developing a Transition Plan based on third satellite approach to provide date-certain start of a parallel broadcast

  9. Transition to GOES-NReceive System Development • NESDIS contractor developing PC software solution • EMWIN system manufacturer developing prototype hardware solution using: • BPSK (Binary Phase Shift Key) modulation • American Hardware Architectures’ TurboCoding Forward Error Correction • Hardware prototype being tested using stored GOES satellite

  10. Transition to GOES-NNext Steps • Testing • Completion of prototype testing began June 2002, will continue December 2002 • Parallel broadcast to begin 6 to 12 months before GOES-N operation • Earliest GOES-N operation is beginning of 2004

  11. Transition to GOES-NUser Information Updates • Periodic general User Notification Administrative Messages • EMWIN Web site • http://iwin.nws.noaa.gov/emwin • Related User Conferences in 2002 • NWS annual Partners Workshop: Summer • Annual emergency managers conferences: Fall • NESDIS LRIT/EMWIN conference: December

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