图像全站仪快速天文测量中星点轨迹研究  

Research on star tracks in fast astronomical survey of image total station

作　　者：张旭 张超[1] 李华孝杨 路辉 ZHANG Xu;ZHANG Chao;LI Huaxiaoyang;LU Hui(Information Engineering University, Zhengzhou 450001, China;Troops 96766, Xinyang 464000,China)

机构地区：[1]信息工程大学,郑州450001 [2]96766部队,河南信阳464000

出　　处：《测绘工程》2022年第2期14-18,共5页Engineering of Surveying and Mapping

基　　金：国家自然科学基金资助项目(42074013)。

摘　　要：针对短时间内星点轨迹的研究,文中通过建立几何数学模型证明短时间内星点运行轨迹为线型的结论;利用实测数据拟合星点方位角时序,验证一次拟合均方根误差最小;最后拟合不同时间跨度的方位角时序,证明均方根误差随着时间跨度的增大而增大,且时间跨度不超过60 s时,拟合均方根误差不超过1″,保障星图的快速处理,为实现快速天文测量提供支撑。Aiming at the research on the trajectory of the star point in a short time,this paper proves the conclusion that the trajectory of the star point in a short time is linear by establishing a geometric mathematical model;secondly,the measured data is used to fit the azimuth time series of the star points,which verifies that the root mean square error of the first fitting is the smallest;finally,fitting the azimuth time series of different time spans proves that the root mean square error increases with the increase of the time span,and when the time span does not exceed 60s,the fitting root mean square error does not exceed 1″,which guarantees the rapid processing of star maps and provides support for the realization of rapid astronomical measurements.

关 键 词：星点轨迹 几何模型 最小二乘法 均方根 时序 

分 类 号：P221[天文地球—大地测量学与测量工程]