DORIS Geocenter Time Series from NASA CDDIS

NASA CDDIS provides the DORIS Geocenter Time Series product, derived from Doppler Orbitography and Radiopositioning Integrated by Satellite data. The International DORIS Service (IDS) Analysis Centers compute these solutions, which track coordinates of the terrestrial reference frame origin. The dataset is maintained by NASA and was last updated in March 2026.

Use Cases

• Analyzing time series of geocenter coordinates for terrestrial reference frame studies.
• Validating satellite orbit determination models using DORIS range-rate measurements.
• Researching Earth's mass redistribution and its effect on the reference frame origin.
• Combining with other space geodetic techniques for integrated geodetic solutions.

Strengths

• Data originates from the authoritative NASA Crustal Dynamics Data Information System (CDDIS).
• Solutions are produced by International DORIS Service (IDS) Analysis Centers, ensuring standardized processing.
• Dataset is actively maintained, with a recorded update in March 2026.

Limitations

• Specific column names, row counts, and file sizes are not provided by any source.
• Sources conflict on license: one specifies 'other-license-specified', while another lists no license.
• The exact temporal coverage of the time series is not stated.

Provenance

Source

National Aeronautics and Space Administration (NASA) via the Crustal Dynamics Data Information System (CDDIS).

Collection Method

Generated by International DORIS Service (IDS) Analysis Centers from dual-frequency Doppler tracking of a global network of ground beacons by satellite receivers.

Time Range

null

Freshness

2026-03-13 03:09:30.861533

Geography

Global, based on a distributed network of ground beacons.