GNSS Broadcast Ephemeris: Daily Satellite Navigation Data

Global ground-based receivers collect daily broadcast ephemeris data from multiple satellite navigation systems, including GPS, GLONASS, Galileo, Beidou, and IRNSS. The data is stored in RINEX format, with one file generated per receiver site per day. This dataset supports precise geospatial positioning and Earth science research.

Use Cases

• Precise point positioning calculations based on broadcast satellite orbits and clock corrections.
• Satellite constellation health monitoring based on daily broadcast navigation messages.
• Geodetic reference frame realization based on global, multi-GNSS data.
• Ionospheric and atmospheric studies based on signal propagation data from multiple satellite systems.
• Crustal motion and plate tectonic analysis based on long-term, high-precision positioning time series.

Strengths

• Includes data from multiple global navigation satellite systems (GPS, GLONASS, Galileo, Beidou, QZSS, IRNSS, SBAS) since 2011.
• Data is collected from a global permanent network of ground-based receivers, providing wide spatial coverage.
• Files are provided in the standardized RINEX format, supporting interoperability.

Limitations

• Column names and exact data structure are not specified in the provided metadata.
• The exact size and row count of the dataset are unknown.
• One source specifies an 'other-license-specified' license, while another lists 'None', creating ambiguity.

Provenance

Source

NASA Crustal Dynamics Data Information System (CDDIS)

Collection Method

Collected from a global permanent network of ground-based GNSS receivers.

Time Range

Data collection includes systems added since 2011, but a specific start date is not provided.

Freshness

2026-04-10 02:09:10.571439

Geography

Global