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Organizational Overview


Guiding Documents

Terms of Reference
Charter for IGS Analysis Centers and Associate Analysis Centers
Charter for IGS Data Centers
Charter for IGS Infrastructure Committee
Charter for IGS Associates Committee
IGS Policy for the Establishment of IGS Projects and Working Groups
IGS Site Guidelines


Brief Descriptions of the IGS Components

Station-Operating Agencies Manage the IGS stations according to the IGS Site Guidelines and transmit the data to IGS Data Centers
Analysis Centers (ACs) Analyze the IGS station data to form submissions to IGS products such as orbits, clocks, and station positions
Analysis Center Coordinator (ACC) Combines the ACs' submissions to form the "classic" IGS products (GPS orbits, clocks)
Other Product Coordinators Combine AC submissions to form specialized IGS products, such as timescale, reference frame, or atmospheric products.
Data Centers (DCs) Archive and provide open access to IGS data and products
Associate Analysis Centers (AACs) Produce specialized or derived products, such as ionospheric or tropospheric products, regional position/velocity products, or global coordinate/velocity covariance information.
Central Bureau (CB) Overall coordination and day-to-day management of the IGS, and this information system
Associate Members (AMs) Persons at contributing organizations who spend the majority of their time on work that contributes to the IGS. The associate members are the electorate of the IGS.
Governing Board (GB) The international body that sets policy and direction for the IGS. Some positions are elected and others are appointed.
Pilot Projects (PPs) Aim at developing a new product using data from the IGS network
Working Groups (WGs) Work on a particular topic related to the IGS components
Contributing Organizations Any agency fulfilling at least one of the roles above
Infrastructure Committee (IC) A Standing Committee of the Governing Board

Please view the IGS Organization Chart for additional information.