利用早期小比例尺航片制作大比例尺数字产品的精度控制

The Precision Control in Large Scale Digital Mapping with Early Small Scale Aerial Photos

针对利用早期小比例尺航片制作大比例尺数字产品的技术难题,以1∶60 000航片编绘1∶10 000地形图为例探讨精度控制的技术方法。本文对数字产品进行了平面、高程和相邻地物点间距中误差检验,证明了利用早期小比例尺航片制作大比例尺数字产品制图精度满足规范要求。

According to the difficulties to use early small scale aerial photos in large scale digital mapping,the paper discusses the technique of precision control with an example of using 1∶ 60 000 aerial photographs to make 1∶ 10 000 maps.By checking up the mean square error of plane,elevation and distance between object points of the digital product,the paper proves that the precision with early small scale aerial photos to draw big scale digital production meets the demand of criterion very well.