Measuring the gravity potential between two remote sites with CVSTT technique using two hydrogen clocks
ABSTRACTAccording to General Relativity Theory (GRT), by comparing the frequencies between two precise clocks at two different stations, the gravity potential (geopotential) difference between the two stations can be determined due to the gravity frequency shift effect. Here, we conduct a clock-tran...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-08-01
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| Series: | Geo-spatial Information Science |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/10095020.2023.2231515 |
| _version_ | 1797737050847313920 |
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| author | Kuangchao Wu Wen-Bin Shen Xiao Sun Chenghui Cai Ziyu Shen |
| author_facet | Kuangchao Wu Wen-Bin Shen Xiao Sun Chenghui Cai Ziyu Shen |
| author_sort | Kuangchao Wu |
| collection | DOAJ |
| description | ABSTRACTAccording to General Relativity Theory (GRT), by comparing the frequencies between two precise clocks at two different stations, the gravity potential (geopotential) difference between the two stations can be determined due to the gravity frequency shift effect. Here, we conduct a clock-transportation experiment for measuring geopotential differences based on frequency comparisons via satellite links between two remote hydrogen atomic clocks. Based on the net frequency shift between the two clocks in two different periods, the geopotential difference between stations of the Beijing 203 Institute Laboratory (BIL) and Luojiashan Time-frequency Station (LTS) is determined. Comparisons show that the experimental result deviated from the reference of Earth gravity model EGM2008 result by (38.5[Formula: see text]45.9) m in Orthometric Height (OH). The results are consistent with the frequency stabilities of the hydrogen clocks (at the level of [Formula: see text]) used in the experiment. With the rapid development of time and frequency science and technology, the approach discussed in this study for measuring the geopotential is prospective and thus, could have broad applications. |
| first_indexed | 2024-03-12T13:22:48Z |
| format | Article |
| id | doaj.art-dc43eab131bf4ec99d08d2a60c382533 |
| institution | Directory Open Access Journal |
| issn | 1009-5020 1993-5153 |
| language | English |
| last_indexed | 2024-03-12T13:22:48Z |
| publishDate | 2023-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geo-spatial Information Science |
| spelling | doaj.art-dc43eab131bf4ec99d08d2a60c3825332023-08-25T15:12:53ZengTaylor & Francis GroupGeo-spatial Information Science1009-50201993-51532023-08-0112010.1080/10095020.2023.2231515Measuring the gravity potential between two remote sites with CVSTT technique using two hydrogen clocksKuangchao Wu0Wen-Bin Shen1Xiao Sun2Chenghui Cai3Ziyu Shen4Time and Frequency Geodesy Center, School of Geodesy and Geomatics/Key Laboratory of Geospace Environment and Geodesy of Ministry of Education, Wuhan University, Wuhan, ChinaTime and Frequency Geodesy Center, School of Geodesy and Geomatics/Key Laboratory of Geospace Environment and Geodesy of Ministry of Education, Wuhan University, Wuhan, ChinaState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, ChinaTime and Frequency Geodesy Center, School of Geodesy and Geomatics/Key Laboratory of Geospace Environment and Geodesy of Ministry of Education, Wuhan University, Wuhan, ChinaSchool of Resource and Environment, Hubei University of Science and Technology, Xianning, ChinaABSTRACTAccording to General Relativity Theory (GRT), by comparing the frequencies between two precise clocks at two different stations, the gravity potential (geopotential) difference between the two stations can be determined due to the gravity frequency shift effect. Here, we conduct a clock-transportation experiment for measuring geopotential differences based on frequency comparisons via satellite links between two remote hydrogen atomic clocks. Based on the net frequency shift between the two clocks in two different periods, the geopotential difference between stations of the Beijing 203 Institute Laboratory (BIL) and Luojiashan Time-frequency Station (LTS) is determined. Comparisons show that the experimental result deviated from the reference of Earth gravity model EGM2008 result by (38.5[Formula: see text]45.9) m in Orthometric Height (OH). The results are consistent with the frequency stabilities of the hydrogen clocks (at the level of [Formula: see text]) used in the experiment. With the rapid development of time and frequency science and technology, the approach discussed in this study for measuring the geopotential is prospective and thus, could have broad applications.https://www.tandfonline.com/doi/10.1080/10095020.2023.2231515Relativistic geodesygravity potentialatomic clockCVSTT techniqueensemble empirical mode decomposition (EEMD) |
| spellingShingle | Kuangchao Wu Wen-Bin Shen Xiao Sun Chenghui Cai Ziyu Shen Measuring the gravity potential between two remote sites with CVSTT technique using two hydrogen clocks Geo-spatial Information Science Relativistic geodesy gravity potential atomic clock CVSTT technique ensemble empirical mode decomposition (EEMD) |
| title | Measuring the gravity potential between two remote sites with CVSTT technique using two hydrogen clocks |
| title_full | Measuring the gravity potential between two remote sites with CVSTT technique using two hydrogen clocks |
| title_fullStr | Measuring the gravity potential between two remote sites with CVSTT technique using two hydrogen clocks |
| title_full_unstemmed | Measuring the gravity potential between two remote sites with CVSTT technique using two hydrogen clocks |
| title_short | Measuring the gravity potential between two remote sites with CVSTT technique using two hydrogen clocks |
| title_sort | measuring the gravity potential between two remote sites with cvstt technique using two hydrogen clocks |
| topic | Relativistic geodesy gravity potential atomic clock CVSTT technique ensemble empirical mode decomposition (EEMD) |
| url | https://www.tandfonline.com/doi/10.1080/10095020.2023.2231515 |
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