First Circular

Annapolis, MD
November 2-5, 1998

General Workshop Information
NASA GSFC, through the Crustal Dynamics Data Information (CDDIS), an IGS Global Data Center, in conjunction with the IGS Central Bureau, will host the IGS Network Systems Workshop for three and one half days on November 2-5, 1998 in Annapolis, MD. The goals of this workshop include:

• development of a closer community within the IGS infrastructure
• strengthening of communications within this community
• improve performance of the network
• develop a shared vision of the future network
• a proceedings targeted along the lines of an "IGS Network Operations Plan" that would document the network operations of the IGS and future plans

The IGS has been an operational service for nearly five years, providing GPS data and products from a globally distributed network of high precision GPS receivers. Since its inception, the IGS has not sponsored a workshop of this type, focusing on the network and infrastructure issues and how future plans for the IGS affect these components. This workshop will provide a venue for the various network components of the IGS to meet and discuss our current configurations, problems and their resolutions, how to incorporate the many future requirements into our existing infrastructure, and what new technologies are available that we should take advantage of.

Station operators and data center representatives are encouraged to bring poster paper presentations. Furthermore, network/station contacts attending the workshop will be requested to bring additional information such as the following:

• Photos and other information of the station
• Data flow template filled in for each subnetwork/station
• Logs and forms to be verified at the workshop either on web interface or hardcopy

More details on the preparation of this material will be forthcoming in the near future. This information will be collected by the IGS Central Bureau to use in the new, improved, web-based Central Bureau Information System (CBIS).

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Topics of the Workshop

• State of the IGS
• Future Requirements of the IGS
• Physical Site Specifications
• Communications and Data Links
• Network Performance and Upgrade Issues
• Data Center Performance
• Network Monitoring and Performance
• Central Bureau Information System Review and Recommendations

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Conveners

• Ruth Neilan, IGS Central Bureau, Jet Propulsion Laboratory, Pasadena, CA
• Carey Noll, NASA GSFC, Greenbelt, MD

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Program Committee

• IGS Infrastructure Committee
  • Yehuda Bock, Scripps Institution of Oceanography, La Jolla, CA
  • Steve Fisher, Jet Propulsion Laboratory/UNAVCO, Boulder, CO
  • Werner Gurtner, Astronomical Institute of Berne, Switzerland
  • Jan Kouba, Natural Resources Canada
  • Ulf Lindqwister, Jet Propulsion Laboratory, Pasadena, CA
  • Chuck Meertens, University NAVSTAR Consortium, Boulder, CO
  • Ruth Neilan, IGS Central Bureau, Jet Propulsion Laboratory, Pasadena, CA
  • Carey Noll, NASA GSFC, Greenbelt, MD
• Ludwig Combrinck, Hartebeestoek Radio Observatory, South Africa
• Loic Daniel, Institute Geographic National, France
• Yuki Hatanaka, Geographical Survey Institute, Japan
• Martin Hendy, Australian Survey and Land Information Group, Australia
• Jan Johansson, Onsala Space Observatory, Sweden
• Hans Peter Plag, Geodetic Institute, Norwegian Mapping Authority, Honefoss, Norway
• Jim Ray, U.S. Naval Observatory, Washington, D.C.
• Wolfgang Schlueter, Bundesamt fuer Kartographie und Geodaisie, Germany
• Tim Springer, Astronomical Institute of Berne, Switzerland
• James Zumberge, Jet Propulsion Laboratory, Pasadena, CA

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Local Organizer

• Carey Noll, NASA GSFC, Greenbelt, MD
  
  

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Who Should Attend?
IGS station and network operators, data center contacts, interested representatives from the analysis centers, and the IGS community in general.

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Schedule
The workshop will start mid-day, Monday November 02 and will continue through the afternoon of Thursday November 05. The conveners, Program Committee, and session chairs will meet on Friday November 06 to address actions raised during the workshop and discuss future plans and directions. A more detailed agenda will follow in a future circular.

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Workshop Venue
The workshop will be held in the Governor Calvert House, one of the Historic Inns of Annapolis. The Historic Inns, a series of three hotels in downtown Annapolis, will also provide lodging for the attendees of the workshop. Annapolis is an historic town as well as Maryland's capital and is situated on the Chesapeake Bay. Numerous restaurants, quaint shops, historic attractions, and waterfront are all within walking distance of the hotels. Annapolis is about 40 minutes from Baltimore, 45 minutes from Washington, D.C., and 25 minutes from NASA GSFC. A banquet and excursion to the Goddard Geophysical and Astronomical Observatory are planned.

A registration fee will be charged to cover meeting expenses, breaks, and special events.

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Further Information
A web site has been developed to provide the latest information about the IGS Network Systems Workshop. This site will also provide registration and hotel information in the near future. The URL for the workshop web site is:

http://cddisa.gsfc.nasa.gov/igs_netws/netws_home.html

A PDF version of this first circular is available.

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