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Time-Varying Characteristics of ERP Parameters Determined by Different Spatial Geodetic Techniques
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Erhu WEI1, Yan ZHU1, Yunlong ZHANG2, Yile LUO1, Xiaojing TIAN3, Jingnan LIU4
Journal of Geodesy and Geodynamics | 2025, 45(6) : 551 - 554, 579
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Journal of Geodesy and Geodynamics | 2025, 45(6): 551-554, 579
Time-Varying Characteristics of ERP Parameters Determined by Different Spatial Geodetic Techniques
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Erhu WEI1, Yan ZHU1, Yunlong ZHANG2, Yile LUO1, Xiaojing TIAN3, Jingnan LIU4
Affiliations
  • 1 School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
  • 2 China Railway Design Corporation, 10 Minjiang Road, Tianjin 300251, China
  • 3 Geodetic Data Processing Center, MNR, 334 East-Youyi Road, Xi'an 710054, China
  • 4 GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China

    • WEI Erhu, PhD, professor, majors in space geodesy and navigation, E-mail:

About Author:

WEI Erhu, PhD, professor, majors in space geodesy and navigation, E-mail:

Published: 2025-06-15 doi: 10.14075/j.jgg.2024.07.322
Outline
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This paper takes the Earth rotation parameters(ERP) obtained by each individual measurement means as research data, and outputs the processing results in the time domain and frequency domain respectively. Then the index parameters obtained from each analysis are compared with the data analysis results obtained by joint calculation in international Earth rotation service(IERS). The results show that the time-varying characteristics of ERP obtained by various measurement methods are different.

Earth rotation parameters  /  time-varying characteristics  /  spectrum analysis  /  fast Fourier transform  /  power spectral density analysis
魏二虎, 朱颜, 张云龙, 罗一乐, 田晓静, 刘经南. 不同空间大地技术确定的ERP参数时变特征分析. 大地测量与地球动力学, 2025 , 45 (6) : 551 -554, 579 . DOI: 10.14075/j.jgg.2024.07.322
Erhu WEI, Yan ZHU, Yunlong ZHANG, Yile LUO, Xiaojing TIAN, Jingnan LIU. Time-Varying Characteristics of ERP Parameters Determined by Different Spatial Geodetic Techniques[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (6) : 551 -554, 579 . DOI: 10.14075/j.jgg.2024.07.322
Funding
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  • National Natural Science Foundation of China(42374015)
  • National Key Research and Development Program of China(2018YFC1503600)
  • Open Fund of Tianjin Key Laboratory of Rail Transit Navigation Positioning and Spatio-Temporal Big Data Technology(TKL2024B04)
Appendix
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Year 2025 volume 45 Issue 6
23
8
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Article Info
doi: 10.14075/j.jgg.2024.07.322
  • Receive Date：2024-07-06
  • Online Date：2026-10-30
  • Published：2025-06-15
Article Data
Affiliations
History
  • Received：2024-07-06
Funding
National Natural Science Foundation of China(42374015)
National Key Research and Development Program of China(2018YFC1503600)
Open Fund of Tianjin Key Laboratory of Rail Transit Navigation Positioning and Spatio-Temporal Big Data Technology(TKL2024B04)
Affiliations
    1 School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
    2 China Railway Design Corporation, 10 Minjiang Road, Tianjin 300251, China
    3 Geodetic Data Processing Center, MNR, 334 East-Youyi Road, Xi'an 710054, China
    4 GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
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https://castjournals.cast.org.cn/joweb/ddcl/EN/10.14075/j.jgg.2024.07.322
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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