Global GNSS Observation Summary Data from NASA CDDIS

Daily files of 30-second sampled Global Navigation Satellite System (GNSS) observation summary data are provided by NASA's Crustal Dynamics Data Information System (CDDIS). The archive includes data from GPS, GLONASS, and, since 2011, other global and regional systems like Galileo and Beidou, collected from a worldwide network of ground-based receivers. Data is stored in RINEX format, processed through the TEQC (translation, editing, and quality check) software.

Use Cases

• Analyzing plate tectonics and crustal motion using precise satellite observation time-series.
• Calibrating satellite orbit and clock models with broadcast ephemeris data.
• Studying atmospheric effects on signal propagation by examining multi-GNSS observation summaries.
• Validating the performance of global and regional satellite navigation systems against ground-truth data.

Strengths

• Data originates from NASA's authoritative CDDIS archive, a primary node for space geodesy data.
• Includes multi-GNSS constellations (GPS, GLONASS, Galileo, Beidou, etc.) since 2011, offering broad system coverage.
• Provides daily files with a high 30-second sampling rate for detailed temporal analysis.

Limitations

• Specific row counts, total dataset size, and detailed column schemas are not provided by any source.
• One source lists a license as 'other-license-specified', while another lists 'None', creating a conflict regarding licensing clarity.

Provenance

Source

NASA Crustal Dynamics Data Information System (CDDIS)

Collection Method

Collected from a global permanent network of ground-based GNSS receivers and processed through TEQC software.

Time Range

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Freshness

2026-03-13 01:44:23.691491

Geography

Global coverage from a network of permanent ground stations.