GUARDIAN Galileo Satellite Antenna Phase Center Daily Files

Antenna phase center locations for Galileo satellites, measured relative to each satellite's center of mass. The data is produced daily as 24-hour files by NASA's Crustal Dynamics Data Information System (CDDIS) and the Jet Propulsion Laboratory's Global Differential GPS Operations Centers. This dataset supports precise satellite orbit and clock determination.

Use Cases

• Calibrating satellite antenna phase center offsets for precise orbit determination.
• Improving the accuracy of global navigation satellite system (GNSS) clock and ephemeris products.
• Supporting research in solid Earth geophysics, including studies of crustal motion and gravity field variations.

Strengths

• Data is generated by NASA's CDDIS and JPL's Global Differential GPS Operations Centers, indicating authoritative provenance.
• Files are produced daily, suggesting a regular update cadence for operational use.

Limitations

• Specific column names, row counts, and file sizes are not provided by any source, limiting detailed assessment.
• Sources conflict on license information, with some listing 'other-license-specified' and others 'None'.

Provenance

Source

NASA Crustal Dynamics Data Information System (CDDIS) and Jet Propulsion Laboratory (JPL) Global Differential GPS Operations Centers.

Collection Method

Generated from ground-based GNSS observations processed at operational centers.

Time Range

Daily 24-hour files; specific start date unknown.

Freshness

2026-03-13 01:45:11.006310

Geography

Global coverage for the Galileo satellite constellation.