GIS中直线元位置不确定性的传播模型

The propagating model for positional uncertainties of line segments in GIS

在直线元不确定性模型的基础上,对GIS中直线元的不确定性传播模型作进一步的研究,主要对直线元长度、折线长度、折线环长度和直线元方向进行不确定性估计,建立它们的不确定性模型.

Based on the model for the uncertainty of line segments, the propagating model for the uncertainty of line segments in GIS is discussed in this paper. Uncertainties of lengths of line segments, broken lines, links formed with broken lines, and deflection of line segments are mainly estimated. The uncertainty model of them is built.