CGCS2000 Maintain Methods Analysis

CHENG Yingyan; DANG Yamin; BEI Jinzhong; WANG Hu; QIU Ronghai; WAN Jun

doi:10.13203/j.whugis20150189

Volume 42 Issue 4

Apr. 2017

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Geomatics and Information Science of Wuhan University > 2017 > 42(4): 543-549. > DOI: 10.13203/j.whugis20150189

CHENG Yingyan, DANG Yamin, BEI Jinzhong, WANG Hu, QIU Ronghai, WAN Jun. CGCS2000 Maintain Methods Analysis[J]. Geomatics and Information Science of Wuhan University, 2017, 42(4): 543-549. DOI: 10.13203/j.whugis20150189

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CGCS2000 Maintain Methods Analysis

Chinese Academy of Surveying and Mapping, Beijing 100830, China

Funds:

Key Project of China National Programs for Research and Development 2016YFB0501405

the National Natural Science Foundation of China 41374014

the National High Technology Research and Development Program(863 Program) of China 2013AA122501

the Basic Scientific Research Funds of Chinese Academy of Surveying and Mapping 7771503

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Author Bio:
CHENG Yingyan，PhD, professor, specializes in the data processing in GNSS and CGCS2000 frame maintain theories and methods .E-mail: yycheng@casm.ac.cn
Received Date: November 24, 2015
Published Date: April 04, 2017

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Abstract

As an existing method, Quasi_Stable Adjustment which is often used to align local CORS position to CGCS2000 at present, has some limitation. This paper focuses on studying the methods of calculating the real position of GPS stations at the reference epoch of CGCS2000 from GPS observations obtained from various observing times, two methods are introduced here. One is to align the position of GNSS stations to CGCS2000 through adjustment with coordinates of CGCS2000 reference stations constrained tightly, while the other method is to transform the coordinates of the GNSS stations to CGCS2000 through their velocities. In order to demonstrate the difference between these two methods, nearly 1800 CORS's observations about one month collected from 30 provinces in China were processed and transformed with the two methods. The conclusion derived from the results analysis shows that the maximum transformed difference between Quasi_Stable Adjustment and CGCS2000 will be dm.
- CGCS2000,
- frame maintain,
- quasi_stable adjustment,
- velocity

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References

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