NASA CDDIS GNSS: Daily Ground-Based Satellite Observation Data

NASA's Crustal Dynamics Data Information System archives daily 24-hour files of ground-based Global Navigation Satellite System observation data with a 30-second sampling rate. The dataset contains data primarily from GPS and GLONASS, and since 2011 includes data from Galileo, Beidou, QZSS, IRNSS, and SBASs. Files are stored in RINEX format, one per site, from a global permanent network of receivers.

Use Cases

• [Precise geodetic positioning] based on [30-second GNSS observation data]
• [Monitoring crustal motion and plate tectonics] based on [global permanent network of ground-based receivers]
• [Analyzing satellite orbit and ephemeris data] based on [RINEX format broadcast navigation files]
• [Studying Earth's rotational variations] based on [global coverage GNSS data]
• [Integrating multi-GNSS system data] based on [GPS, GLONASS, Galileo, Beidou, QZSS, and IRNSS observations]

Strengths

• [Data from a global permanent network] provides worldwide spatial coverage
• [Includes data from multiple GNSS systems (GPS, GLONASS, Galileo, Beidou, QZSS, IRNSS, SBASs)] since 2011
• [High temporal resolution] with 30-second sampling in daily 24-hour files

Limitations

• [Specific row count, file size, and column names are not provided in any source]
• [License is listed as 'other-license-specified' on datagov but is 'None' on nasa_earthdata, indicating a conflict or lack of clarity]
• [Metadata completeness is low, with unknown author and sparse column information]

Provenance

Source

NASA Crustal Dynamics Data Information System (CDDIS)

Collection Method

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

Time Range

null

Freshness

2026-04-10 02:06:55.618733

Geography

Global