The IGS network is a collection of heterogeneous stations operated by many different organizations pooling their resources under the IGS umbrella for the common good.
The IGS collects, archives, and freely distributes Global Navigation Satellite System (GNSS) observation data sets from a cooperatively operated global network of ground tracking stations
View the global network of all 508 ground tracking stations.
IGS Data Centers fall into three categories: Operational, Regional, and Global Data Centers.
Products derived from GNSS data archived in the CDDIS are generated and submitted by the IGS analysis and associate analysis centers.
The GNSS data consist of the receiver’s observation data, the broadcast orbit information of the tracked satellites, and supporting data, such as meteorological parameters, collected from co-located instruments
IGS analysis centers retrieve data daily to produce IGS products.
The Real-time Analysis Center Coordinator (RTACC) has operational responsibility for the generation of the official combination products.
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