cddis – International GNSS Service

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Network
- - - VIEW IGS STATIONS MAP AND LIST
      
      View and learn more about the global network of all IGS ground tracking stations.
    - Network
  - - NETWORK RESOURCES
      
      Download Map and Station lists, Propose a new IGS site and more
    - Network Resources
  - - STATION OPERATOR RESOURCES
      
      Access Station Guidelines, the Site Log Manager User Guide, and more.
    - Station Operator Resources
  - - FILE ACCESS
      
      Visit our secure, https file access to view station info, logs, formats, and more
    - File Access
Products
- - - LEARN MORE ABOUT IGS PRODUCTS
      
      Products derived from GNSS data archived in the CDDIS are generated and submitted by the IGS analysis and associate analysis centers.
Data
- - - DATA AND PRODUCTS OVERVIEW
      
      Learn more about GNSS data and products derived from it.
    - Data and Products
      - File Access
  - - LEARN ABOUT IGS DATA
      
      View Daily, Hourly, High Rate, Ephemerides, MGEX, and Real-Time data.
    - Data
  - - DATA ACCESS
      
      Access data from IGS Data Centers and learn more
    - Data Access
  - - REAL-TIME
      
      Learn more about the RT Working Group and Real Time Service.
    - Real-Time Service (RTS)
Documents
- - - IGS FORMATS AND STANDARDS
      
      View the latest IGS Formats and Standards
    - Formats and Standards
  - - IGS DOCUMENTS
      
      View all IGS Documents
    - Documents
  - - IGS TECHNICAL REPORT
      
      View the latest IGS Annual Technical Reports
    - IGS Annual Technical Report
  - - STRATEGIC PLANNING
      
      View the IGS 2021+ Strategic Plan
    - IGS 2021+ Strategic Plan
Participate
- - - IGS ASSOCIATE MEMBERSHIP
      
      Learn how to become an Associate Member.
    - Associate Members
      - Associate Members List
      - Associate Member Meetings
  - - COMMITTEES + PILOT PROJECTS
    - Committees
    - Pilot Projects
  - - UPCOMING IGS NEWS & EVENTS
      
      View the latest IGS News and Events
    - IGS Events
    - IGS Workshops
    - IGS News
      - Constellations Newsletter
  - - SUBSCRIBE TO MAILING LISTS
      
      Subscribe to our various IGS mailing lists
    - Mailing Lists
About
- - - The International GNSS Service (IGS) has ensured open access, high-quality GNSS data products since 1994.
  - - About IGS
    - Why join the IGS?
      - Participate in the IGS
  - - Governance + Management
    - FAQ
Contact Us
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International GNSS Service

Contact Us

IGS Central Bureau
NASA Jet Propulsion Laboratory
California Institute of Technology
4800 Oak Grove Drive
Mail Stop 238-600
Pasadena, CA 91109
United States of America
Email: CB@igs.org

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The IGS is a service of the International Association of Geodesy (IAG), its Global Geodetic Observing System (GGOS), The International Union of Geodesy and Geophysics (IUGG), and a network member of the International Science Council (ISC) World Data System (WDS).

IUGG International Association of Geodesy

IAG Global Geodetic Observing System

International Union of Geodesy and Geophysics

World Data System

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INTERNATIONAL GNSS SERVICE

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