Study on Telescope Gain Affected by a Multilevel Hybrid Mechanism in FAST

Study on Telescope Gain Affected by a Multilevel Hybrid Mechanism in FAST

This paper focuses on the telescope gain affected by a multilevel hybrid mechanism for the feed positioning in the five-hundred-meter aperture spherical radio telescope (FAST) project, which is based on the positioning accuracy analysis of the mechanism. First, error model for the whole mechanism is...

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Main Authors: Xiaoming Chai, Jin Fan, Lanchuan Zhou, Bo Peng
Format: Article
Language:English
Published: SAGE Publishing 2014-04-01
Series:Advances in Mechanical Engineering
Online Access:https://doi.org/10.1155/2014/841526
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spelling doaj-58f3d2b365f44e0c8d6f150b8e84938f2020-11-25T03:22:47ZengSAGE PublishingAdvances in Mechanical Engineering1687-81322014-04-01610.1155/2014/84152610.1155_2014/841526Study on Telescope Gain Affected by a Multilevel Hybrid Mechanism in FASTXiaoming Chai0Jin Fan1Lanchuan Zhou2Bo Peng3 Joint Laboratory for Radio Astronomy Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China Joint Laboratory for Radio Astronomy Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China Joint Laboratory for Radio Astronomy Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Beijing 100012, ChinaThis paper focuses on the telescope gain affected by a multilevel hybrid mechanism for the feed positioning in the five-hundred-meter aperture spherical radio telescope (FAST) project, which is based on the positioning accuracy analysis of the mechanism. First, error model for the whole mechanism is established and its physical meaning is clearly explained. Then two kinds of error sources are mainly considered: geometric errors and structural deformations. The positioning error over the mechanism's workspace is described by an efficient and intuitive approach. As the feed position error will lower the telescope gain, this influence is analyzed in detail. In the end, it is concluded that the design of the mechanism can meet the requirement of the telescope performance.https://doi.org/10.1155/2014/841526
collection DOAJ
language English
format Article
sources DOAJ
author Xiaoming Chai
Jin Fan
Lanchuan Zhou
Bo Peng
spellingShingle Xiaoming Chai
Jin Fan
Lanchuan Zhou
Bo Peng
Study on Telescope Gain Affected by a Multilevel Hybrid Mechanism in FAST
Advances in Mechanical Engineering
author_facet Xiaoming Chai
Jin Fan
Lanchuan Zhou
Bo Peng
author_sort Xiaoming Chai
title Study on Telescope Gain Affected by a Multilevel Hybrid Mechanism in FAST
title_short Study on Telescope Gain Affected by a Multilevel Hybrid Mechanism in FAST
title_full Study on Telescope Gain Affected by a Multilevel Hybrid Mechanism in FAST
title_fullStr Study on Telescope Gain Affected by a Multilevel Hybrid Mechanism in FAST
title_full_unstemmed Study on Telescope Gain Affected by a Multilevel Hybrid Mechanism in FAST
title_sort study on telescope gain affected by a multilevel hybrid mechanism in fast
publisher SAGE Publishing
series Advances in Mechanical Engineering
issn 1687-8132
publishDate 2014-04-01
description This paper focuses on the telescope gain affected by a multilevel hybrid mechanism for the feed positioning in the five-hundred-meter aperture spherical radio telescope (FAST) project, which is based on the positioning accuracy analysis of the mechanism. First, error model for the whole mechanism is established and its physical meaning is clearly explained. Then two kinds of error sources are mainly considered: geometric errors and structural deformations. The positioning error over the mechanism's workspace is described by an efficient and intuitive approach. As the feed position error will lower the telescope gain, this influence is analyzed in detail. In the end, it is concluded that the design of the mechanism can meet the requirement of the telescope performance.
url https://doi.org/10.1155/2014/841526
work_keys_str_mv AT xiaomingchai studyontelescopegainaffectedbyamultilevelhybridmechanisminfast
AT jinfan studyontelescopegainaffectedbyamultilevelhybridmechanisminfast
AT lanchuanzhou studyontelescopegainaffectedbyamultilevelhybridmechanisminfast
AT bopeng studyontelescopegainaffectedbyamultilevelhybridmechanisminfast
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