摘要
为了提高仪器的工作效率,在数字天顶仪定位的基础上开展了定向方法的研究,构建了识别星点的坐标转换模型.从坐标转换模型出发,分析了仪器倾斜及光轴倾斜等因素对恒星像点图像坐标的影响,研究了焦距值及光轴指向的天文坐标对恒星理论坐标的影响,并在坐标转换的基础上建立了定向模型.试验结果表明,单组星图的定向精度均在5″以内,定向精度较高,能够满足实际条件下对定向精度的要求.
In order to improve the efficiency of digital zenith camera,the orientation method was studied on the basis of precision position.Coordinate transformation model for identified star points was constructed.Then the coordinate transformation model was analyzed.The effects of instrument tilt and optical axis tilt on star points were analyzed respectively.Influence of focal length and astronomical coordinates of optical axis on the theoretical image coordinates of star points were also studied.Then the orientation model was established based on coordinate transformation.Analysis of experimental data shows that the orientation accuracy of single group star images is within 5″.The orientation accuracy is high,which can meet the requirements of orientation accuracy under actual conditions.
作者
刘先一
张志利
周召发
常振军
段辉
LIU Xian-yi;ZHANG Zhi-li;ZHOU Zhao-fa;CHANG Zhen-jun;DUAN Hui(Rocket Force University of Engineering,Xi′an 710025,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2020年第1期94-101,共8页
Acta Photonica Sinica
基金
国家自然科学青年基金（No.41404022)~~
关键词
精密工程测量
天文定位
数字天顶仪
坐标转换
定向模型
定向精度
Precise engineering survey
Astronomical positioning
Digital zenith camera
Coordinate transformation
Orientation model
Orientation precision
