摘要
坐标转换精度受多种因素的影响,以平面四参数模型在坐标转换中的应用为例,探讨地形起伏对坐标转换精度的影响,模拟算例结果表明,除了选择测区周边的公共点外,将高程极值点纳入坐标转换参数的求解,可以提高坐标转换的精度。
The precision of coordinate conversion is impacted by various factors.Taking the application of plane four-parameter model in coordinate conversion as an example,this study explored the impact of topographic relief on the precision of coordinate transformation.The results show that in addition to select public points around the survey region,calculating the coordinate conversion parameters by adding extreme elevations of public points can improve the accuracy of coordinate conversion.
作者
陈安平
张斌
CHEN Anping;ZHANG Bin(Geology Surveying and Mapping Institute of Guangdong,510800,Guangzhou,PRC;Beijing Municipal Commission of Planning and Natural Resources,102300,Beijing,PRC)
出处
《江西科学》
2021年第3期495-497,546,共4页
Jiangxi Science
关键词
坐标转换
四参数模型
地形起伏
公共点
coordinate transformation
four-parameter model
topographic relief
public point
