CAJ | 학술논문

区域的通视问题是指已知视点、计算视点可视的地形表面区域集合的问题。目前常用的R2，R3，PRVA， PREAI，Xdraw等算法也都是针对该问题提出的，但是在实际应用中，特别是当观察目标为飞行器时，不仅需要知道区域地形表面的通视情况，还必须知道区域在任意高度层上的通视情况。针对此问题，在前人研究的基础上，改进出一种基于最小通视高度的通视性算法，在数字高程模型（ DEM）的基础上，不仅能精确计算区域地形表面通视情况，对该区域上空任意高度的通视情况也能精确、快速地计算。最后，编程实现该算法，检验了该算法的可行性和精确性。
구역적통시문제시지이지시점、계산시점가시적지형표면구역집합적문제。목전상용적R2，R3，PRVA， PREAI，Xdraw등산법야도시침대해문제제출적，단시재실제응용중，특별시당관찰목표위비행기시，불부수요지도구역지형표면적통시정황，환필수지도구역재임의고도층상적통시정황。침대차문제，재전인연구적기출상，개진출일충기우최소통시고도적통시성산법，재수자고정모형（ DEM）적기출상，불부능정학계산구역지형표면통시정황，대해구역상공임의고도적통시정황야능정학、쾌속지계산。최후，편정실현해산법，검험료해산법적가행성화정학성。
The issue of inter-visibility indicates to the problem of the set of terrain surface area observable to known viewpoints and computed viewpoints .The common methods are R2,R3,PRVA,PREAI and Xdraw. But in the real application ,especially when the observed target is an aircraft ,what should be known includes the inter-visibility situation of surface terrain and of space of any flight levels .This paper proposes an improved inter-visibility algorithm based on minimum inter-visibility height .Based on the Digital Elevation Model ( DEM),this method could not only calculate precisely the inter-visibility situation of surface terrain, but also compute the inter-visibility of space of any flight levels precisely and quickly .Then the algorithm was implemented by programming ,which identifies the feasibility and accuracy of the algorithm .