DORIS dSTEC product provides differential slant total electron content (dSTEC) observations derived from dual-frequency DORIS measurements collected by low Earth orbit (LEO) satellites. The product is generated and maintained by the Chinese Academy of Sciences (CAS) and is intended for global ionospheric research and related scientific applications. The DORIS-dSTEC observable represents the change in slant TEC along a continuous DORIS observation arc, referenced to a selected epoch within the arc. By differencing, instrumental biases and slowly varying errors are largely eliminated, making the product well suited for ionospheric variability studies

 

Essential Geodetic Variables (EGV)

Atmosphere

 

DOI, metadata and licence

This product is referenced with a DOI: 10.24400/312072/i01-2026.001

More metadata

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Product access

The derived DORIS-dSTEC product files are publicly accessible from the CAS data center at https://data.bdsmart.cn/pub/product/iono/doris/dstec/

The product is described in this document.

Citation

If you use the data, please cite: "DORIS dSTEC are developed by the IDS Working Group on NRT DORIS Ionospheric Applications, generated and maintained by the Chinese Academy of Sciences (DOI: 10.24400/312072/i01-2026.001)"

Contacts

For any technical issues or additional information related to DORIS dSTEC products, users are advised to contact Ningbo Wang (chair of IDS WG on NRT DORIS Ionospheric Applications)

Acknowledgement

This work is supported by the International DORIS Service and Aerospace Information Research Institute, CAS.

References

Li, A.; Wang, N.; Li, Z.; Liu, A.; Li, Y.; Wang, L.; Liu, B., 2026. Real-time versus postprocessing IGS combined global TEC maps: examined by Jason-3 altimetry and DORIS observations, GPS SOLUTIONS, 30(61):, DOI : 10.1007/s10291-026-02022-y

Liu, A.; Wang, N.; Dettmering, D.; Li, Z.; Schmidt, M.; Wang, L.; Yuan, H., 2023. Using DORIS Data for Validating Real-Time GNSS Ionosphere Maps, in New Results from DORIS for Science and Society, E.J.O. Schrama and D. Dettmering (Eds.), ADVANCES IN SPACE RESEARCH, 72(1):115-128, DOI : 10.1016/j.asr.2023.01.050