一种适用于航标覆盖范围重叠度表达的离散方法

A Discrete Method for Overlap Expression of Coverage of Aids to Navigation

为了直观准确地表示具有严重重叠现象的航标覆盖范围,提出了一种面状图形离散方法,以放射线型图型为基本图形,在进一步离散中建立航标参数的表达手段,并建立航标覆盖能力的可视化方式。用线离散面、基本图元离散线的离散化方式能节约表示面状要素、线状要素所需的平面空间,可用于处理彼此重叠的面状要素的压盖问题,单一符号离散出的基本单元和图案能用于表示信息的不同,反映航标之间的区别。

In order to directly and accurately represent the coverage of aids to navigation with serious overlap,a discrete method for polygon graphics is proposed The radial pattern is used as the basic graph to establish the expression means of navigation parameters in further discretization Meanwhile,the visualization method of coverage capability of aids to navigation is also established The discretization method of using lines to discretize polygon and using basic graphics to discretize lines can save the plane space required for expressing polygon and line elements It can be used to deal with the problem of overlapping polygon elements Single symbols discretized from basic units and patterns can be used to represent differences in information and reflect the differences between aids to navigation.