NASA CDDIS GLONASS Broadcast Ephemeris and Meteorological Data

NASA's Crustal Dynamics Data Information System (CDDIS) provides daily ground-based GNSS data from the Russian GLONASS satellite system. The dataset includes combined broadcast ephemeris files with 30-second sampling and co-located meteorological data containing temperature, pressure, and humidity. Data is collected from a global permanent network of ground-based receivers and stored in RINEX format.

Use Cases

• Precise satellite orbit determination based on GLONASS broadcast ephemeris data.
• Atmospheric correction modeling for GNSS signals using co-located meteorological data.
• Geodetic reference frame analysis leveraging a global network of permanent receivers.
• Time-series analysis of Earth's rotational motion using long-term GNSS observations.

Strengths

• Data originates from NASA's authoritative CDDIS archive.
• Provides global coverage from a permanent network of ground stations.
• Includes both satellite navigation and meteorological data from co-located instruments.

Limitations

• Column names and exact data structure are unspecified in the provided metadata.
• One source indicates a last update date of 2026-04-10, which is a future date and suggests potential metadata error.
• Specific file sizes and row counts are not provided, limiting assessment of dataset scale.

Provenance

Source

National Aeronautics and Space Administration (NASA), Crustal Dynamics Data Information System (CDDIS)

Collection Method

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

Freshness

2026-04-10 02:15:41.010563 (Note: This is a future date)

Geography

Global