DORIS Satellite Doppler RINEX Data for Geodesy

DORIS RINEX data provides precise orbit determination and ground beacon positioning using a dual-frequency Doppler system. The system, developed by CNES with French agency cooperation, has flown on missions including TOPEX/Poseidon, SPOT series, Envisat, and Jason satellites. Data is collected via an uplink system where ground beacons transmit to satellite receivers, with observations centralized for distribution.

Use Cases

• Analyzing crustal motion rates and directions for plate tectonic studies.
• Determining precise satellite orbits for altimetry and remote sensing missions.
• Calculating geoid and ellipsoid characteristics for global reference systems.
• Studying fault movement direction and rate using precise ground station positioning.

Strengths

• Data originates from a long-term system deployed on multiple major satellite missions (TOPEX/Poseidon, SPOT-2 to -5, Envisat, Jason).
• Provides measurements for multiple earth science domains: geodesy, tectonics, and coordinate reference systems.
• System employs a centralized, edited data processing and distribution method.

Limitations

• Critical dataset specifications (row count, file size, column names) are unavailable across all sources.
• License is ambiguously listed as 'other-license-specified' on Data.gov, with no details on NASA Earthdata.

Provenance

Source

Centre National d'Etudes Spatiales (CNES) with cooperation from other French government agencies, distributed by NASA CDDIS.

Collection Method

Measurement of Doppler shift on radiofrequency signals emitted by ground beacons and received on spacecraft.

Time Range

Covers the operational periods of TOPEX/Poseidon, SPOT-2, -3, -4, -5, Envisat, and Jason satellite missions.

Freshness

2026-03-13 03:09:36.612967

Geography

Global, via a network of ground beacons and satellite coverage.