Analysis on the earth rotation parameters under different means

CHEN Shaojie; GAO Yuping; SHI Chunlin; YIN Dongshan; WANG Qihong; CHEN Yongtao

doi:10.12265/j.gnss.2021101305

Volume 47 Issue 2

May 2022

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Article Navigation > GNSS World of China > 2022 > 47(2): 133-138

CHEN Shaojie, GAO Yuping, SHI Chunlin, YIN Dongshan, WANG Qihong, CHEN Yongtao. Analysis on the earth rotation parameters under different means[J]. GNSS World of China, 2022, 47(2): 133-138. doi: 10.12265/j.gnss.2021101305

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Analysis on the earth rotation parameters under different means

doi: 10.12265/j.gnss.2021101305

1.
National Time Service Centre, Chinese Academy of Sciences, Xi’an 710600, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Troop 61206, Beijing 100042, China

Received Date: 2021-10-13
Available Online: 2022-04-14

Abstract

Abstract

With the use of various space geodetic methods such as very long baseline interferometry (VLBI), satellite laser ranging (SLR), lunar laser ranging (LLR), Global Navigation Satellite System (GNSS), Doppler orbitograph and radio positioning integrated by satellite (DORIS), etc., the measurement accuracy of earth rotation parameters (ERP) has been continuously improved. It provides high-precision conversion parameters between the International Celestial Reference System (ICRS) and the International Terrestrial Reference System (ITRS) for many fields such as spacecraft navigation and deep space exploration.This article mainly uses the C04 sequence published by the International Earth Rotation and Reference System Service as the basic sequence, the 500 days ERP sequence was selected and the error distribution of the ERP data obtained by different measurement methods was analyzed. It provides data basis for studying the feasibility and accuracy level of accuracy checking by using the consistency between different data, and also provides more data options for ERP forecasts.
- earth rotation parameters (ERP),
- polar motion,
- UT1-UTC,
- length of day (LOD)

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