ITRF2020 SLR Model: Expanded Satellite Laser Ranging Station Positions

An expanded set of Satellite Laser Ranging (SLR) station positions and velocities in the International Terrestrial Reference Frame 2020 (ITRF2020). The dataset includes historical sites not part of the official ITRF2020 model and some very recently installed sites that came online in 2022. It is provided by NASA's CDDIS and requires users to apply specific corrections for certain sites.

Use Cases

• Update terrestrial reference frame models based on expanded SLR station data.
• Analyze station position changes over time based on historical and recent site data.
• Apply corrections for specific sites affected by events like earthquakes.
• Propagate station positions linearly for precise geodetic calculations.

Strengths

• Includes historical sites not part of the official ITRF2020 model.
• Contains data for some very recently installed sites that came online in 2022.
• Provides a framework for applying corrections for sites affected by events.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Users must manually apply corrections for specific sites, which adds complexity.

Provenance

Source

National Aeronautics and Space Administration (NASA) CDDIS.

Collection Method

Likely compiled from international Satellite Laser Ranging network observations.

Freshness

Last updated 2026-03-13 01:25:50.371132; freshness should be verified.

Geography

Global coverage of SLR stations.