http://www.gissky.net- GIS空间站

探讨在地籍宗地数字化的面积处理问题中 ,把已知面积数据和数字化坐标同时作为观测值的面积处理方法。采用方差分量估计 ,解决已知面积数据参与平差时的权的确定。通过实例分析 ,认为采用条件平差方差分量估计方法来对宗地面积处理 ,能够更加合理地调整已有面积与由数字化坐标得到的面积值之间的差异。

The error processing in area of the digitized cadastral parcel is further discussed. In the previous studies, the area adjustment models are derived, including the condition equations for areas, areas with arcs, rectangular angles and circular arcs. However, previous models are based on the assumption that the digitized points of the parcel have errors while the area of the parcel is regarded as fixed value without error. This assumption is less vigorous because the area of a parcel is also an observation t...