Research on Construction Theory of Global CGCS2000 Coordinate Frame

JIANG Zhihao; LIU Jingnan; WANG Fan; BEI Jinzhong; ZHAI Xi

doi:10.13203/j.whugis20160068

Volume 43 Issue 2

Feb. 2018

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Geomatics and Information Science of Wuhan University > 2018 > 43(2): 167-174. > DOI: 10.13203/j.whugis20160068

JIANG Zhihao, LIU Jingnan, WANG Fan, BEI Jinzhong, ZHAI Xi. Research on Construction Theory of Global CGCS2000 Coordinate Frame[J]. Geomatics and Information Science of Wuhan University, 2018, 43(2): 167-174. DOI: 10.13203/j.whugis20160068

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Research on Construction Theory of Global CGCS2000 Coordinate Frame

JIANG Zhihao^{1, 2,},
LIU Jingnan^{1, 3},
WANG Fan²,
BEI Jinzhong⁴,
ZHAI Xi²

1.
School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
2.
National Geomatics Center of china, Beijing 100830, China
3.
GNSS Research Center, Wuhan University Wuhan 430079, China
4.
China Academy of Surveying and mapping, Beijing 100830, China

Funds:

The National Natural Science Foundation of China 41304008

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Author Bio:
JIANG Zhihao, PhD candidate, senior engineer, specializes in GNSS data processing and result analysis.E-mail:zhjiang@ngcc.cn
Received Date: September 06, 2016
Published Date: February 04, 2018

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Abstract

Abstract

The global coordinate reference frame is one of the most important infrastructures for the development of global satellite navigation system, but also an urgent demand in China's construction of spatial information facilities. This paper focuses on the mathematical model for a Global CGCS2000 Coordinate Frame, analyzes the theory and algorithm of the inner constraints required for Global CGCS2000 Coordinate Frame formulation, and shows that under certain conditions, a two-step method and one-step method are identical. The Inner constraints algorithm redefines the constraint conditions of the coordinate reference frame according to minimum standard for parameter transformation and its rate. Coordinate similarity transformation yields an adjusted network, which ensures the highest degree of fit with the initial network shape, maintaining the coordinate network from the effects of different observation technologies. The results of this study can deepen the theoretical foundations of coordinate frame determination, and provides a scientific method for the realization of the CGCS2000 globalization.

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