Articles | Volume 18, issue 24
https://doi.org/10.5194/amt-18-7787-2025
https://doi.org/10.5194/amt-18-7787-2025
Research article
 | 
19 Dec 2025
Research article |  | 19 Dec 2025

On-orbit calibration and performance validation of the Yunyao polarimetric radio occultation system

Liang Kan, Fenghui Li, Naifeng Fu, Yan Cheng, Sai Xia, and Bobo Xu

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Atmos. Meas. Tech., 18, 1339–1353, https://doi.org/10.5194/amt-18-1339-2025,https://doi.org/10.5194/amt-18-1339-2025, 2025
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Cited articles

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Berger, C., Biancale, R., and Barlier, F.: Improvement of the empirical thermospheric model DTM: DTM94 – a comparative review of various temporal variations and prospects in space geodesy applications, Journal of Geodesy, 72, 161–178, https://doi.org/10.1007/s001900050158, 1998. 
Cardellach, E., Rius, A., Cerezo, F., García-Primo, M. Á., de la Torre-Juárez, M., Cucurull, L., and Ector, D.: Polarimetric GNSS Radio-Occultations for heavy rain detection, IEEE International Geoscience and Remote Sensing Symposium, 3841–3844, https://doi.org/10.1109/IGARSS.2010.5650907, 2010. 
Cardellach, E., Tomás, S., Oliveras, S., Padullés, R., Rius, A., de la Torre-Juárez, M., Turk, F. J., Ao, C. O., Kursinski, E. R., and Schreiner, B.: Sensitivity of PAZ LEO polarimetric GNSS radio-occultation experiment to precipitation events, IEEE Transactions on Geoscience and Remote Sensing, 53, 190–206, https://doi.org/10.1109/tgrs.2014.2320309, 2014. 
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Short summary
We built and launched a satellite sensor that can receive signals from navigation satellites based on the changes in their propagation in the atmosphere. We calibrated the data and compared it with precipitation radar and others. The sensor is stable and accurate. It can detect humidity, clouds and rain, even during storms. These results mean better forecasts, earlier storm and flood warnings, and better options for people and communities.
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