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一种新的测量大气折射的方法
Alternative TitleA new method to establish actual atmospheric refraction measurement model
苏婕1,2,3; 张益恭1,2,3,4; 杨磊1,2,3; 冒蔚1
Source Publication云南大学学报(自然科学版)/Journal of Yunnan University(Natural Sciences)
2018-04
Volume40Issue:02Pages:287-294
DOI10.7540/j.ynu.20170468
ClassificationP126.2 ; P222 ; P412.1
Contribution Rank第1完成单位
Indexed ByCSCD ; 核心
Keyword天体测量 天文大气折射 数据处理
Abstract

大气折射是直接影响地面天体测量位置的一项较大的修正项.现有的大气折射表仅采用某一地区的大气平均密度编制而成,而实际大气密度的分布情况还受到观测站的地理环境、周围建筑物分布、气象环境等要素的影响.因此对于高精度的观测,仅用统一的大气折射表作修正是不够的,提高大气折射修正值精度的根本途径是建立观测站本地的大气折射实测模型.根据多功能天文经纬仪的特点,提出一种仅用子午方向的视天顶距测定值就可得到瞬时天文纬度测定值的方法,将这种测定值分别用于建立子午方向大气折射实测模型和各给定方位的大气折射实测模型.并且在编制观测纲要时满足一定的限制条件Σtan z→0,巧妙地压缩原有大气折射表等系统误差对瞬时天文纬度测定值的影响. 更多还原

Other Abstract

Atmospheric refraction is a major correction term which directly influences the position measurement of celestial bodies.The existing atmospheric refraction table only adopts the average atmospheric density of observation area,while the actual distribution of atmospheric density is affected by the geographical environment,building and meteorological environment of observation station.Therefore,for highly-accurate observation,it is not enough to make correction by adopting unitary refraction table. The fundamental method to improve atmospheric refraction correction accuracy is to establish atmospheric refraction measurement model of observation station.Based on the characteristics of the multi-function theodolite,this paper proposes approach which can get the instantaneous astronomical latitude value only by using apparent zenith distance of the meridian direction. Meanwhile,we have separately established the actual atmospheric refraction measurement modal of meridional direction and multiple directions.The compiling of star-choosing program is also made to meet some conditions( Σ tan z→0) so that the system errors affecting the measurement of instantaneous astronomical latitude can be reduced artfully.

Funding Project国家自然科学基金[11403101] ; 国家自然科学基金[11503083]
Funding Organization国家自然科学基金[11403101, 11503083]
Language中文
Subject Area天体测量学
MOST Discipline Catalogue理学 ; 理学::天文学
ISSN0258-7971
CSCD IDCSCD:6205075
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12137
Collection天体测量及应用研究组
中国科学院天体结构与演化重点实验室
Affiliation1.中国科学院云南天文台,云南,昆明,650216;
2.中国科学院天体结构与演化重点实验室,云南,昆明,650216
3.中国科学院天文大科学研究中心,北京,100012
4.中国科学院大学,北京,100049
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
苏婕,张益恭,杨磊,等. 一种新的测量大气折射的方法[J]. 云南大学学报(自然科学版)/Journal of Yunnan University(Natural Sciences),2018,40(02):287-294.
APA 苏婕,张益恭,杨磊,&冒蔚.(2018).一种新的测量大气折射的方法.云南大学学报(自然科学版)/Journal of Yunnan University(Natural Sciences),40(02),287-294.
MLA 苏婕,et al."一种新的测量大气折射的方法".云南大学学报(自然科学版)/Journal of Yunnan University(Natural Sciences) 40.02(2018):287-294.
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