DORIS Satellite Ionospheric Total Electron Content Data

DORIS Ionospheric Products provide time derivatives of Total Electron Content (TEC) derived from dual-frequency Doppler signals between satellites and a global ground beacon network. The data is generated by International DORIS Service (IDS) Analysis Centers and distributed by NASA's Crustal Dynamics Data Information System (CDDIS). The dataset is actively maintained, with a last recorded update in March 2026.

Use Cases

• Modeling ionospheric Total Electron Content (TEC) time derivatives for space weather analysis.
• Correcting signal delays in satellite positioning and navigation systems.
• Studying global ionospheric variability using time-tagged range-rate measurements from a distributed beacon network.
• Validating other ionospheric measurement techniques with dual-frequency Doppler data.

Strengths

• Data originates from a globally distributed network of ground beacons, ensuring wide spatial coverage.
• Products are generated by multiple International DORIS Service (IDS) Analysis Centers, supporting methodological consensus.
• The dataset is actively maintained by NASA CDDIS, with a recorded update in 2026.

Limitations

• Specific column names, row counts, and file sizes are not documented across any source.
• Sources conflict on license details, with one specifying 'other-license-specified' and another listing 'None'.
• The exact temporal range of the data records is not provided.

Provenance

Source

NASA Crustal Dynamics Data Information System (CDDIS) / International DORIS Service (IDS) Analysis Centers.

Collection Method

Derived from dual-frequency Doppler shift or phase measurements between orbiting satellites and ground beacons.

Time Range

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Freshness

2026-03-13 03:09:56.513999

Geography

Global, via a network of ground beacons.