摘要
首先指出坐标转换的必要性,然后对常用的转换方法布尔莎七参数模型和一步法进行介绍。通过实验数据,发现了七参数模型旋转矩阵中的三角函数值在欧勒角较大时强行近似带来的精度损失,以及七参数模型与一步法各自的适用条件和优缺点。
First,this paper points out the necessity of coordinate transformation,then introduces two popular transformation methods：Brusa model with 7 parameters and one-step method.Through experiment,the results not only implied the precision loss caused by the trigonometry value in the rotation matrix of 7-parameter model when Euler Angles was forced to approximate,but also showed us the respective suitable conditions of 7-parameter model and one-step method and their advantages and disadvantages.
出处
《海洋测绘》
2010年第6期5-7,共3页
Hydrographic Surveying and Charting
关键词
坐标变换
布尔莎七参数模型
一步法
coordinate transformation
brusa model with 7 parameters
one-step method
