摘要
通过对单个转换参数改变对GPS定位值的影响分析,得出水平方向上的两个定位值(x,y)之间为线性关系,再通过对两个转换参数变化的分析得到一组平行的线性曲线。这些特性的存在为求算WGS84到西安80坐标系间的转换参数提供了可能。笔者利用这些特性求算出一套转换参数,并通过外业定位试验说明它们可以满足林业外业工作的需要。
In this paper,the impact of a single change in transformation parameters upon GPS positioning data was analyzed,and the linear relationship formula between the two positioning values（x,y） in the horizontal direction was calculated.A group of parallel linear curves were then obtained by analyzing the changes of the two transformation parameters.These features made it possible to calculate the transformation parameters from WGS84 to Xi＇an80 Coordinate System.A set of transformation parameters were thus worked out,which,the field positioning tests showed,could meet the needs of forestry field work.
出处
《安徽林业科技》
2011年第4期18-21,25,共5页
Anhui Forestry Science and Technology
关键词
林业外业
GPS
西安80坐标系
转换参数
Forestry field work
GPS
Xi＇an80 coordinate system
Transformation parameters
