GPS Satellite Attitude Quaternions from Real-Time POD

Global GPS satellite attitude data provides a time series of quaternion components for healthy satellites in the GPS constellation, accumulated every minute. The product is generated in real-time by JPL's Global Differential GPS Operations Centers and distributed via NASA's CDDIS. Daily files can be concatenated to extend temporal coverage.

Use Cases

• Precise satellite orbit determination and validation using quaternion-based attitude data.
• Analysis of Earth's rotational motion variations and polar motion by tracking satellite orientation.
• Enhancing global coordinate reference systems through integration of precise satellite attitude information.
• Supporting studies in solid Earth geoid characteristics and crustal motion via GNSS satellite tracking.

Strengths

• Provides real-time data generation with a high temporal resolution of 30-second sampling.
• Covers the entire global GPS constellation, offering a complete spatial scope for analysis.
• Data from daily files can be concatenated to create longer, continuous time series for trend analysis.

Limitations

• Specific row counts, total dataset size, and detailed column names are not provided by any source.
• Sources conflict on license details, with some specifying 'other-license-specified' and others listing 'None'.
• The exact time range of available historical data is unspecified.

Provenance

Source

NASA CDDIS, generated by JPL's Global Differential GPS Operations Centers.

Collection Method

Real-time generation from ground-based GNSS tracking.

Time Range

Daily files; specific historical range unknown.

Freshness

2026-03-13 01:43:36.530424

Geography

Global coverage of the GPS satellite constellation.