地图数字化数据处理的相关平差与精度分析

Correlation Adjustment and Accuracy Analysis in Map Digitization Data Processing

根据地图数字化坐标转换方法、转换所得地面坐标平差方法 ,得到数字化数据处理的几种方案 ,对不同方案的计算结果进行比较 ,讨论了相关性对平差结果的影响 。

The methods for the transformation of map digitized coordinates to ground coordinates include conform method, affine method and project method. Based on these transformation methods, map digitized data are processed by transforming these data into the ground coordinates. And these coordinates are treated as independent observations with the same accuracy. Several schemes of map digitized data adjustment are presented. The results are then analyzed and compared. The influence of digitized data correlation on the adjustment results are further discussed. The accuracy estimation of digitized data is analyzed in the end.