EGU25-14188, updated on 15 Mar 2025
https://doi.org/10.5194/egusphere-egu25-14188
EGU General Assembly 2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Oral | Thursday, 01 May, 11:50–12:00 (CEST)
 
Room K2
Determination of geopotential at ground station using China Space Station microwave links
Pengfei Zhang1, Chenxiang Wang1,2, Lihong Li1, Lei Wang1, Wei Xu3, Ziyu Shen4, Rui Xu1, An Ning1, Abdelrahim Ruby5,6, and Wenbin Shen1,5
Pengfei Zhang et al.
  • 1School of Geodesy and Geomatics, Wuhan University, Wuhan, 430079, China (pfzhang@whu.edu.cn; sggllh@whu.edu.cn; lwangsgg@whu.edu.cn; rXu_sgg@whu.edu.cn; rXu_sgg@whu.edu.cn)
  • 2College of Geographical Sciences, Faculty of Geographical Science and Engineering, Henan University, Zhengzhou, 437100, China (wangchenxiang@whu.edu.cn)
  • 3School of Geographic Information and Tourism, Chuzhou University, Chuzhou, 239000, China (whuxwei@whu.edu.cn)
  • 4School of Resource, Environmental Science and Engineering, Hubei University of Science and Technology, Xianning, 45004, China (theorhythm@foxmail.com)
  • 5State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, 430079, China (wbshen@sgg.whu.edu.cn)
  • 6Department of Surveying Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo, 11629, Egypt (abdelrahim.ruby@feng.bu.edu.eg)

The China Space Station (CSS) is currently in orbit and carries the high-precision optical atomic clock with stability of 2.0×10-15/√τ in its experiment module. We have developed a model to determine the geopotential at the ground based on the gravity frequency shift equation and have created both one-way and dual-frequency transfer models up to c-4. These models consider influence from the troposphere, ionosphere, and solid Earth tides. The proposed model is suitable for measurements at the magnitude of 10-19. Based on the CSS mission, we conducted the simulation experiments. The results indicate that, based on the CSS microwave links, we can obtain the geopotential difference between two sites on the ground with centimeter-level accuracy.

This study is supported by the National Natural Science Foundations of China (NSFC) (Grant Nos. 42030105, 42388102, and 42274011) and the China Postdoctoral Science Foundation (Certificate Number: 2024M752480).

How to cite: Zhang, P., Wang, C., Li, L., Wang, L., Xu, W., Shen, Z., Xu, R., Ning, A., Ruby, A., and Shen, W.: Determination of geopotential at ground station using China Space Station microwave links, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-14188, https://doi.org/10.5194/egusphere-egu25-14188, 2025.