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A new calibration model for pointing a radio telescope that considers nonlinear errors in the azimuth axis
Kong, DQ1; Wang, SG1,2; Wang, JQ3; Wang M(汪敏)4; Zhang, HB1; Kong, DQ (reprint author), Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China.
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2014-06
卷号14期号:6页码:733-740
DOI10.1088/1674-4527/14/6/011
产权排序第4完成单位
收录类别SCI
关键词Telescopes Antennas Pointing Models
摘要A new calibration model of a radio telescope that includes pointing error is presented, which considers nonlinear errors in the azimuth axis. For a large radio telescope, in particular for a telescope with a turntable, it is difficult to correct pointing errors using a traditional linear calibration model, because errors produced by the wheel-on-rail or center bearing structures are generally nonlinear. Fourier expansion is made for the oblique error and parameters describing the inclination direction along the azimuth axis based on the linear calibration model, and a new calibration model for pointing is derived. The new pointing model is applied to the 40 m radio telescope administered by Yunnan Observatories, which is a telescope that uses a turntable. The results show that this model can significantly reduce the residual systematic errors due to nonlinearity in the azimuth axis compared with the linear model.
项目资助者National Natural Science Foundation of China [10903016, 11078011]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1674-4527
URL查看原文
WOS记录号WOS:000337717100011
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5631
专题射电天文研究组
通讯作者Kong, DQ (reprint author), Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China.
作者单位1.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2.College of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
3.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
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Kong, DQ,Wang, SG,Wang, JQ,et al. A new calibration model for pointing a radio telescope that considers nonlinear errors in the azimuth axis[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2014,14(6):733-740.
APA Kong, DQ,Wang, SG,Wang, JQ,Wang M,Zhang, HB,&Kong, DQ .(2014).A new calibration model for pointing a radio telescope that considers nonlinear errors in the azimuth axis.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,14(6),733-740.
MLA Kong, DQ,et al."A new calibration model for pointing a radio telescope that considers nonlinear errors in the azimuth axis".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 14.6(2014):733-740.
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