【摘要】 地形图数字化误差造成地物几何形变,采用测量平差的理论方法可以减弱形变。本文通过直角与直线条件、平行线条件、距离条件和圆曲线条件等方程的列立,讨论了采用最小二乘法进行GIS数字化数据的平差模型建立方法,归纳了实际平差的计算步骤,及其应用举例。更多还原

【Abstract】 The digitalization errors of topographic map result in geometry change for the objects on the earth. We can reduce geometry change by means of measuring adjustment. By minimal bi-multiplication, this paper discusses the building and application for adjustment model of GIS digitalization data through arranging equation of conditions of right angle and straight line, parallel line, distance and circular curve. It sums up calculation steps of practical adjustment and its application examples.更多还原