GUARDIAN GLONASS Daily Antenna Phase Centers from NASA CDDIS

Ground-Based Global Navigation Satellite System (GNSS)-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) GLONASS daily antenna phase centers (24-hour files) from NASA CDDIS contain antenna phase center locations relative to the GLONASS satellite's center of mass. The product is generated at JPL's Global Differential GPS Operations Centers. It is hosted by NASA's Crustal Dynamics Data Information System (CDDIS).

Use Cases

• Precise GLONASS orbit determination and satellite clock analysis using antenna phase center offsets.
• Improving GNSS-based atmospheric sensing by correcting for satellite-specific phase center variations.
• Contributing to the maintenance of the International Terrestrial Reference Frame (ITRF) through precise satellite modeling.
• Supporting real-time disaster monitoring and alert networks by providing accurate satellite position corrections.

Strengths

• Produced by JPL's Global Differential GPS Operations Centers, a leading authority in GNSS data processing.
• Available as daily 24-hour files, providing regular, standardized updates for time-series analysis.
• Hosted on NASA's CDDIS, a long-term archive for space geodetic data ensuring preservation and access.

Limitations

• Specific column names, dataset size, and row counts are not provided by any source, limiting detailed assessment.
• Sources conflict on license information, with some specifying 'other-license-specified' and others listing 'None'.
• The exact data collection and generation methodology is not described in the provided metadata.

Provenance

Source

NASA Crustal Dynamics Data Information System (CDDIS), generated by JPL's Global Differential GPS Operations Centers.

Collection Method

Generated from ground-based GNSS observations processed for the GUARDIAN network.

Time Range

Daily files imply continuous temporal coverage, but specific start date is not provided.

Freshness

2026-03-13 01:35:48.202349

Geography

Global coverage, inferred from the use of GLONASS satellites and the GUARDIAN network's purpose.