Experiments of determining geopotential difference between two remote sites by 
satellite common-view time-frequency transfer

Wu, Kuangchao; Shen, Ziyu; Xu, Wei; Li, Lihong; Ning, An; Wang, Lei; Zhang, Pengfei; Xu, Rui; Xie, Youchao; Cheng, Peng; Sun, Xiao; Cai, Chenghui; Wu, Yifan; Luan, Wei; Guo, Jiachun; Zhang, Tengxu; Shen, Wenbin

doi:10.57757/IUGG23-3147

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Experiments of determining geopotential difference between two remote sites by satellite common-view time-frequency transfer

Wu, K., Shen, Z., Xu, W., Li, L., Ning, A., Wang, L., Zhang, P., Xu, R., Xie, Y., Cheng, P., Sun, X., Cai, C., Wu, Y., Luan, W., Guo, J., Zhang, T., Shen, W. (2023): Experiments of determining geopotential difference between two remote sites by satellite common-view time-frequency transfer, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3147

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020596 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020596_1

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Creators:
Wu, Kuangchao¹, Author
Shen, Ziyu¹, Author
Xu, Wei¹, Author
Li, Lihong¹, Author
Ning, An¹, Author
Wang, Lei¹, Author
Zhang, Pengfei¹, Author
Xu, Rui¹, Author
Xie, Youchao¹, Author
Cheng, Peng¹, Author
Sun, Xiao¹, Author
Cai, Chenghui¹, Author
Wu, Yifan¹, Author
Luan, Wei¹, Author
Guo, Jiachun¹, Author
Zhang, Tengxu¹, Author
Shen, Wenbin¹, Author

Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304

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Abstract: Here we report an experiment of measuring the geopotential difference between two stations separated with a 1240 m height difference by comparing two hydrogen atomic clocks’ frequencies via a satellite common view time-frequency transfer approach. After comparing the two clocks at one station for calibration, one of the two clocks was transported to another station and continued the clock comparison. By this way, we determined the gravity frequency shift and consequently, the geopotential difference between the two remote sites. The experiment result deviates from that determined by the Earth gravity model EIGEN-6C4 by 8.9 (24.6) m²/s². This study provides a prospective way to directly measure the geopotential difference between two remote sites using precise atomic clocks based on satellite links. This study is supported by the National Natural Science Foundation of China (NSFC) (Grant Nos. 42030105, 41721003, 42274011), Space Station Project (2020)228, and Fundamental Research Funds for the Central Universities (2022).

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Language(s): eng - English

Dates: Published Online: 2023-07-11Finally published : 2023-07-11

Publication Status: Finally published

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Identifiers: DOI: 10.57757/IUGG23-3147

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)

Place of Event: Berlin

Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)

Source Genre: Proceedings

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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences

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