摘要
该文对数字化测图中棱镜偏心观测产生的原因进行了分析，归纳出棱镜偏心类型，分析偏心对数字图的精度影响，导出了坐标数据的偏心改正的数学模型，分析了该模型误差和坐标数据误差，提出了实现计算机自动改正的途径，说明了该方法的可靠性和可行性。
The paper analyzes the cause of producing the eccentricity observation of the prism in the digital mapping . It deduces the type of prism eccentricity, analyzes the precision influence of eccentricity on the digital map, derives the mathematical model of the eccentricity correction for the coordinate data . Also, it analyzes the model error and coordinate data error, presents the approach to implement the computer automatic correction, and manifests the reliability and feasibility of the method .
出处
《勘察科学技术》
1999年第5期52-55,共4页
Site Investigation Science and Technology
关键词
数字化测图
棱镜偏心
偏心改正
模型误差
GIS
digital mapping
prism eccentricity
eccentricity correction
model error
coordinate data error
