Transcript msppt

International Satellite Communication
System – ISCS
Systems Transition and
STAR 4 Workstation Replacements
IMPLEMENTATION - COORDINATION
MEETING ON THE GTS AND ISS IN RA V
WELLINGTON, NEW ZEALAND
8 - 12 DECEMBER 2003
Fred Branski
U.S. National Weather Service
Team Leader for Data Management
RTH Washington Focal Point
Overview
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ISCS System
ISCS Deployment Goals
Composition of ISCS
Plan for upgrade of VSAT and Ground Systems
Important Dates
Back-up
Benefits to Common Workstation
Benefits of Two-Way System
USA’s Primary Interests for the ISCS Transition
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The International Satellite
Communications System (ISCS)
• The US will continue to support ICAO and WMO
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requirements with the ISCS for World Area Forecast System
(WAFS) and Regional Main Trunk Network (RMTN)
dissemination and input (WMO).
The global coverage will continue to span approximately
from 65 degrees east longitude westward to 105 degrees
east longitude (covering the Pacific Ocean, Atlantic Ocean,
North America, Central America, South America and the
Caribbean).
Coverage of the remainder of the world will continue to be
supported by the United Kingdom through their satellite
broadcast system called SADIS which primarily covers
Europe, Asia and Africa as well as the Indian Ocean.
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ISCS Deployment Goals
• Replace X.25 network protocol with TCP/IP network
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protocol
All site owned VSAT equipment remains the same
Additional interface equipment will be added to
registered sites
Phased transition from existing network to successor
network with minimum site downtime
Dual operation of current and successor networks to
reduce impact to users
Extend system life with a technology refresh program to
incorporate technology advancements for enhanced
performance capabilities, as appropriate.
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ISCS Ground Equipment &
Workstations
• Met station is not only a WAFS station
• Off the shelf technology in a single unit
without the troublesome Memotech box
• Must have IP capability
• Must have packet software
• Must have GRIB and BUFR code capability
• Must support GRIB2 in the future
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VSAT Upgrade for RA-V
All registered sites upgraded to TCP/IP capable equipment by MCI WorldCom
technicians
• Technicians only need access to the site – no resources
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required
Schedule available on the internet
All hardware upgrades expected to be completed by December
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Two-way sites were upgraded first followed by one-way sites
MCI Project Manager - Rossanna Eaves
[email protected]
NWS ISCS website: www.nws.noaa.gov/iscs
– Advisory bulletins are posted
– Work schedules with any delays or changes are posted
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Important Dates for Workstation
Replacements
• July 2003 – NOAA vendor selected for workstations
• July to December 2003 – VSAT ground equipment
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upgraded
July to December 2003 – New workstations must be
installed and initial training completed
January 1, 2004 – All workstations should be in place,
functioning and capable of receiving and sending via
TCP/IP
????? January to March 2004 ?????– Possible three
month extension of X.25 transmission is being
negotiated with MCI WorldCom
– Monetary and licensing issues
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Back up
• Reliable backup needed for all users
• PCGRIDS can be used for model output
• User should have reliable internet connection or
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alternative way to receive data such as a GTS
landline connection
Data can be pulled (FTP and HTTP) from RTH
Washington servers and those of other centers
EMWIN can also be a backup
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Transmission Back up
• Alternate transmission to RTH Washington
can be accomplished through several ways
– Landline, GTS or AFTN
– FTP via landline or internet
– Web browser
– E-mail
– Dial in through a telecoms line, 12 or 24 Kb
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New Workstations
• Replacements for STAR4 are all off-the-shelf
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workstations
Have two-way capability
Should include maintenance package in price
Should include means for upgrades to
technology and software in at least the first year
Contact NWS International Affairs if interested in
more information or additional purchase
possibilities
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Going Two-Way
• Possible after initial installation of ground
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equipment
Requires changes in satellite dish feedhorn
Requires changes in connecting hardware
Will be at the expense of the site
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Benefits of Two-Way Systems
• New workstations have the built in capacity to
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send and receive data
Increased data exchange and opportunities to
form partnerships
Potentially lower cost for a shared space
segment
Increase data transmission speed, reliability and
access among two-way users
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USA’s Primary Interests for the
ISCS Transition
• Maintain the reliability of ISCS
• Provide accurate and timely meteorological and
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hydrological data and products for all types of weather ,
water and climate needs – particularly flight planning
Continue to provide send and receive capability in the
ISCS
Look for low cost savings through group purchases of
workstations
Promote common system to facilitate maintenance and
training throughout the ISCS
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