Satellite Laser Ranging Station Positions and Velocities for ITRF2020

An expanded set of Satellite Laser Ranging (SLR) station positions and velocities aligned with the International Terrestrial Reference Frame 2020 (ITRF2020). The model includes historical sites not in the official ITRF2020 solution and recently installed sites operational from 2022. It is maintained by NASA's Crustal Dynamics Data Information System (CDDIS) as an extension of the ITRF2020 framework.

Use Cases

• Modeling long-term station position and velocity trends for sites not included in the core ITRF2020 solution.
• Applying post-seismic deformation corrections to station positions for sites affected by earthquakes or other events.
• Incorporating coordinates for recently installed SLR stations that became operational in 2022 into orbit analysis.
• Propagating station positions linearly from a reference epoch and then applying cumulative corrections from the official ITRS PSD model.

Strengths

• Extends the official ITRF2020 model with additional SLR station data.
• Includes sites with operational start dates as recent as 2022.
• Provides a framework for applying event-based corrections to station positions.

Limitations

• Specific row count, column details, and sample data are unavailable.
• Users must manually apply cumulative corrections from separate PSD model files for certain sites.
• The temporal coverage for historical and new sites is not explicitly defined.

Provenance

Source

NASA Crustal Dynamics Data Information System (CDDIS), as an extension of the International Terrestrial Reference System (ITRS) ITRF2020 solution.

Collection Method

Derived from Satellite Laser Ranging (SLR) observations and analysis to determine station positions and velocities.

Geography

Global coverage of SLR station locations.