摘要
采用“一点一方向”平差可以解决投影变形过大问题,文中阐述了其数学模型,结合工程实例进行数据处理,结果与传统平差方法进行比对,得出只要选取合适的中央子午线和投影面高程,可以较好地削减高斯投影变形过大的结论。
One point and one direction adjustment was used to solve the problem of the large projection de-formation.In this paper,the mathematical model was described and the data was processed combining withthe project example.Results were compared with the results of the traditional adjustment method.It wasconcluded that as long as the appropriate central meridian and the projection plane elevation were selected,it could be better reduced that the Gaussian projection distortion was too large.
作者
张宗营
郑干
张紫良
Zhang Zongying;Zheng Gan;Zhang Ziliang(China Coal Technology&Engineering Group Nanjing Design&Research institute Co.,Ltd.,Nanjing 210031,China)
出处
《矿山测量》
2021年第4期99-103,共5页
Mine Surveying
关键词
投影变形
一点一方向
平差
中央子午线
投影面高程
projection distortion
one point and one direction
adjustment
central meridian
projection planeelevation
