摘要
针对在平面坐标转换时选取不同模型将得到不同的转换精度,通过所编程序进行实验,对比了四参数模型、六参数模型和二次曲面模型的转换精度。实验表明,当合理选择转换点时二次曲面模型在平面坐标转换中精度高于四参数模型和六参数模型的转换精度。
Aiming at the coordinate transformation between two 2D coordinate systems,diffrient accuracies from diffrient models will be achieved.This paper utilized the program to compare the accuracy of four-parameter model,six-parameter model and second-degree polynomial model.Results from testing showed when reasonable choose transforming points,the accuracy of second-degree polynomial model is better than the accuracies of four-parameter model and six-parameter model in 2D coordinate transformation.
出处
《地理空间信息》
2011年第2期64-66,8,共3页
Geospatial Information
基金
国家自然科学基金资助项目(41064001)
关键词
平面坐标
坐标转换
转换模型
转换精度
plane coordinate systems,coordinate transformation,conversion model,transformation accuracy