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News in 2005

The purpose of this page of the CDDIS web site is to post new items, activities, data sets, etc. of interest to the CDDIS user community. Users should also consult the list of upcoming meetings of interest to the space geodesy community.

Papers Presented at IAG Meeting in Cairns (01-Sep-2005)

Two poster papers were presented by Mike Pearlman at the IAG meeting in Cairns Australia, August 2005:

  • M. Pearlman, C. Noll, W. Gurtner, R. Noomen, "The International Laser Ranging Service and its Support for GGOS" (PDF poster 12 Mbytes | PDF paper .4 Mbytes), at Dynamic Planet 2005, Cairns Australia, August 2005.
  • M. Pearlman, et al, "GGOS Working Group on Ground Networks and Communication" (PDF poster 15 Mbytes | PDF paper .4 Mbytes), at Dynamic Planet 2005, Cairns Australia, August 2005.

Old CDDIS Server cddisa.gsfc.nasa.gov Now Available (27-May-2005)

The new CDDIS server, cddis.gsfc.nasa.gov, uses an updated structure for anonymous ftp access. A diagram of the structure is now available.

Old CDDIS Server cddisa.gsfc.nasa.gov Now Available (10-Feb-2005)

The old server cddisa.gsfc.nasa.gov is once again in service. However, the CDDIS staff strongly encourages all GPS, GLONASS, DORIS, and SLR users to migrate to the new server, cddis.gsfc.nasa.gov as soon as possible. This host is now considered the operational server for the CDDIS for all data sets except for VLBI. GSFC VLBI personnel are actively working on migrating the data services from cddisa to the new server and hope to have this activitiy completed in the coming months. Contact Carey Noll (Carey.Noll@nasa.gov) with any questions regarding the CDDIS computer facilities.

Old CDDIS Server cddisa.gsfc.nasa.gov Not Accessible (31-Jan-2005)

Over the weekend, hackers attempted to compromise several computers in our division running a particular type of web statistics software. Unfortunately, host cddisa.gsfc.nasa.gov was one of these computers. Although we do not believe that our system was compromised in any way, the security group at GSFC has blocked access to cddisa (as well as several other computers) until an assessment can be made.

As was announced a few weeks ago, users can now access GPS, GLONASS, SLR, and DORIS data, as well as the CDDIS website, on our operational server cddis.gsfc.nasa.gov. We encourage all users to start using this host as soon as possible since we are unsure how long cddisa will be blocked. Unfortunately, at this time, access to VLBI data and products is not yet operational on cddis.gsfc.nasa.gov; we will work with the IVS staff to see what can be done if the outage appears to be too long.

We regret the difficulties this problem will cause our users. If you need to contact someone at the CDDIS, please send email to both Carey Noll (Carey.Noll@nasa.gov) and Maury Dube (mdube@pop900.gsfc.nasa.gov).

CDDIS Operational on New Server (18-Jan-2005)

The CDDIS staff is pleased to announce that the archive is now operational on a new server, cddis.gsfc.nasa.gov. All GPS, GLONASS, SLR, and DORIS data and products are now available through this new server in an updated directory structure; we hope to have VLBI data and products available through the new server soon. We ask that all users begin efforts to transition data access software to utilize the new system. In the meantime, we will maintain the archives on the old CDDIS server, cddisa.gsfc.nasa.gov, for some months yet to allow our user community to make the necessary changes.

In addition to the data archive, the CDDIS website has been redesigned and is now operational on http://cddis.gsfc.nasa.gov. A more detailed structure diagram for the new archive can be found on this website at http://cddis.gsfc.nasa.gov/ftpgpsstruct.html.

We welcome your comments on the new server and website.

CDDIS FTP Archive Diagrams (14-Jan-2005)

The CDDIS data archive will soon be operational on a new server, cddis.gsfc.nasa.gov. The directory structure for several data sets has been modified in this migration to the new server. To ease the transition for the user community to this new structure, several ftp structure diagrams have been created. Please contact Carey Noll with any questions about the new server and directory structure.

New CDDIS Website (14-Jan-2005)

The new CDDIS website is now available on the new CDDIS server cddis.gsfc.nasa.gov. This website was re-designed to utilize the NASA "look and feel". Comments to Carey Noll are welcome.