# Presentation: 727729

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

- _Low-Rate Information Transmission (LRIT)_
- _IMPLEMENTATION PLAN_
- November 14, 2000

## Richard G. Reynolds
Chief, Ground Systems Division
Office of Systems Development 
301-457-5185 x136
Richard.G.Reynolds@noaa.gov

- Chief, Ground Systems Division
- Office of Systems Development
- 301-457-5185 x136
- Richard.G.Reynolds@noaa.gov

- 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-N/October 2002

- 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-N/October 2002

- 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 

- 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

- 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 an Operational LRIT on GOES
A single GOES cannot support simultaneous WEFAX/LRIT. . . It will be WEFAX-OR-LRIT!

- 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 an Operational LRIT on GOES
- A single GOES cannot support simultaneous WEFAX/LRIT. . . It will be WEFAX-OR-LRIT!

- 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  

- 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

- NESDIS LRIT Implementation Plan

## THE PLAN -- 
NESDIS is currently performing a study to determine the architecture and resources necessary to produce the LRIT Service. (Dec 2000)
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

- NESDIS is currently performing a study to determine the architecture and resources necessary to produce the LRIT Service. (Dec 2000)
- 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

- NESDIS LRIT Implementation Plan

## THE PLAN -- (continued)
NESDIS will develop prototype LRIT receiver requirements, and provide specifications to user-station manufacturers 	(January 2001) 
NESDIS will make information available on the “Impacts” of LRIT on present (WEFAX) user-stations      (April 2001)
NESDIS will define the “Day-1” Product Suite (June 2001) 

- NESDIS will develop prototype LRIT receiver requirements, and provide specifications to user-station manufacturers 	(January 2001)
- NESDIS will make information available on the “Impacts” of LRIT on present (WEFAX) user-stations      (April 2001)
- NESDIS will define the “Day-1” Product Suite (June 2001)

- NESDIS LRIT Implementation Plan

## THE PLAN -- (continued)
NESDIS will provide users with information about vendors offering LRIT user-stations 	(September 2001)
NESDIS will provide detailed LRIT Test Transmission Content and Schedule (October 2001)
NESDIS will announce to the WMO and the User Community the final schedule for transition to and operation of LRIT  (December 2001)

- NESDIS will provide users with information about vendors offering LRIT user-stations 	(September 2001)
- NESDIS will provide detailed LRIT Test Transmission Content and Schedule (October 2001)
- NESDIS will announce to the WMO and the User Community the final schedule for transition to and operation of LRIT  (December 2001)

- NESDIS LRIT Implementation Plan

## THE PLAN -- Technical Milestones 
NESDIS is conducting an evaluation/validation of the LRIT communications performance -- spacecraft transponder, transmission format, and receiver systems requirements (April 2001) 
NESDIS LRIT generation and uplink systems will be in-place in October 2001
NESDIS will provide live LRIT test transmissions through a spare GOES in January 2002

- NESDIS is conducting an evaluation/validation of the LRIT communications performance -- spacecraft transponder, transmission format, and receiver systems requirements (April 2001)
- NESDIS LRIT generation and uplink systems will be in-place in October 2001
- NESDIS will provide live LRIT test transmissions through a spare GOES in January 2002

- NESDIS LRIT Implementation Plan

## THE PLAN -- Technical Milestones

Operational LRIT begins on GOES-EAST
November 2002  (GOES-EAST WEFAX ends!)

Operational LRIT begins on GOES-WEST
As soon as practical after May 2003 
All GOES WEFAX ends!

- Operational LRIT begins on GOES-EAST
- November 2002  (GOES-EAST WEFAX ends!)
- Operational LRIT begins on GOES-WEST
- As soon as practical after May 2003
- All GOES WEFAX ends!

- 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

- Validation and Testing of LRIT Communications Parameters
- Design and Implementation of NOAA LRIT Ground Systems
- Development and Availability of Affordable LRIT User-terminals

- 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

- 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

- NESDIS LRIT Implementation Plan

## NOAA LRIT Ground System
Architecture Definition and Design Underway
Contractual Mechanisms in-place for Implementation 
“Day-1” Products Exist 
Data Communications Links Exist 

- Architecture Definition and Design Underway
- Contractual Mechanisms in-place for Implementation
- “Day-1” Products Exist
- Data Communications Links Exist

- NESDIS LRIT Implementation Plan

## Affordable User Terminals 
European and Japanese versions exist
Chip-sets reduce front-end receive system risks
NESDIS working with the manufacturing community to provide early, stable requirements for development  

- European and Japanese versions exist
- Chip-sets reduce front-end receive system risks
- NESDIS working with the manufacturing community to provide early, stable requirements for development

- NESDIS LRIT Implementation Plan