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Description

Global Navigation Satellite System (GNSS) real-time 1 to multi-second sampled data available from the Crustal Dynamics Data Information System (CDDIS). Global Navigation Satellite System (GNSS) provide autonomous geo-spatial positioning with global coverage. GNSS real-time data sets from ground receivers at the CDDIS consist primarily of the data from the U.S. Global Positioning System (GPS) and the Russian GLObal NAvigation Satellite System (GLONASS). Other GNSS (Europe’s Galileo, China’s Beidou, Japan’s Quasi-Zenith Satellite System/QZSS, the Indian Regional Navigation Satellite System/IRNSS, and worldwide Satellite Based Augmentation Systems/SBASs) are similar to the U.S. GPS in terms of the satellite constellation, orbits, and signal structure; CDDIS began streaming real-time data from these systems in 2015. The real-time observation data from a global permanent network of ground-based receivers are transmitted from the CDDIS in 1 to multi-second intervals in raw receiver or RTCM (Radio Technical Commission for Maritime Services) format.

Product Summary

Platforms
Beidou,
GLONASS,
GPS,
GROUND STATIONS,
Galileo,
IRNSS,
QZSS
Instruments
Beidou P,
GLONASS P,
GNSS RECEIVER,
GPSP,
Galileo P,
IRNSS P,
QZSS P
Spatial Extent
N: 90 S: -90 E: 180 W: -180
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
1992-01-01 to Present
Data Partner
Crustal Dynamics Data Information System, Geodesy and Geophysics Laboratory, Earth Sciences Division, Sciences and Exploration Directorate, Goddard Space Flight Center, NASA (CDDIS)
Concept ID
c1291967305-cddis
Data State
ACTIVE
Processing Level
1
Published

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

International GNSS Service (IGS). (2007). Real-time GNSS observation data streams [Data set]. NASA Crustal Dynamics Data Information System. https://doi.org/10.5067/GNSS/GNSS_REALTIME_D_001 Date Accessed: 2025-07-27

Documents

GENERAL DOCUMENTATION URL for more information about GNSS real-time data streams

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