GNSS High-Rate Satellite Observation Data from NASA

Global Navigation Satellite System data combines signals from the U.S. GPS and Russian GLONASS constellations, plus other international systems. The GPS system has been fully operational since 1994, with a constellation of 24 satellites and three active spares orbiting at 20,200 kilometers. This dataset from NASA CDDIS provides high-rate observations sampled at 1-second intervals.

Use Cases

• Analyzing precise satellite orbits and clock corrections using transmitted ranging codes.
• Studying ionospheric and tropospheric delays by processing dual-frequency carrier signals.
• Calculating precise geodetic coordinates and monitoring tectonic plate motion.
• Validating atmospheric models using signal propagation timing data.

Strengths

• Data integrates multiple global satellite systems (GPS, GLONASS, and others).
• Provides high temporal resolution with 1-second sampling intervals.
• Managed by a authoritative source, NASA, indicating consistent collection standards.

Limitations

• Critical metadata such as row count, file size, and specific column names are unavailable across all sources.
• License information is inconsistently reported, listed as 'other-license-specified' on one platform and null on another.
• The temporal coverage and geographic extent of the data are not specified.

Provenance

Source

National Aeronautics and Space Administration (NASA) CDDIS

Collection Method

Signals are detected, decoded, and processed by GNSS receivers from satellite transmissions on two radio-frequency carriers.

Time Range

null

Freshness

2026-03-13 01:52:28.075760

Geography

Global