Accuracy Analysis of CE-3 Moon-Based Ultraviolet Telescope Geometric Positioning

YAN Wei; LIU Jianjun; REN Xin; WANG Fenfei

doi:10.13203/j.whugis20150162

Volume 43 Issue 1

Jan. 2018

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Geomatics and Information Science of Wuhan University > 2018 > 43(1): 133-137, 166. > DOI: 10.13203/j.whugis20150162

YAN Wei, LIU Jianjun, REN Xin, WANG Fenfei. Accuracy Analysis of CE-3 Moon-Based Ultraviolet Telescope Geometric Positioning[J]. Geomatics and Information Science of Wuhan University, 2018, 43(1): 133-137, 166. DOI: 10.13203/j.whugis20150162

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Accuracy Analysis of CE-3 Moon-Based Ultraviolet Telescope Geometric Positioning

YAN Wei^{1, 2,},
LIU Jianjun^{1, 2},
REN Xin^{1, 2, ,},
WANG Fenfei^{1, 2}

1.
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2.
Key Laboratory of Lunar and Deep Space Exploration, Chinese Academy of Sciences, Beijing 100012, China

Funds:

The National Natural Science Foundation of China 41490635

The National Natural Science Foundation of China 41304021

The National Natural Science Foundation of China 41374012

the Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences

More Information

Author Bio:
YAN Wei, PhD, assistant researcher, specializes in lunar exploration and planetary remote sensing. E-mail: yanw@nao.cas.cn
Corresponding author:
REN Xin, PhD, associate researcher. E-mail: renx@nao.cas.cn
Received Date: November 29, 2015
Published Date: January 04, 2018

Graphical Abstract

Abstract

Abstract

The Moon-based ultraviolet telescope (MUVT) is one of the payloads on the Chang'E-3 (CE-3) lunar lander. Because of the advantages of having no atmospheric disturbances and the slow rotation of the Moon, many scientific researches which cannot be completed on Earth can be carried out by MUVT such as making long-term continuous observations of a series of important celestial objects in the near ultra-violet band (245~340 nm) Geometric positioning of MUVT observation data is crucial for the successful implementation of moon-based astronomical observations, which is one of scientific objectives of China's second phase lunar exploration mission, by accurately obtaining the celestial coordinates of each star image in the telescope images. In this paper, working principle and related coordinate systems for MUVT of CE-3 lander will be introduced. Then the algorithm of geometric positioning for MUVT observations will be researched and the positioning accuracy will be evaluated. The results show that high-precision astronomical coordinates within 0.2° can be obtained by the geometric positioning algorithm studied in this paper.
- Chang'E-3 mission,
- the Moon-based ultraviolet telescope,
- geometric positioning,
- coordinate conversion

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