物标部分呈现在视景系统中的实现方法  

Realization of partly emerging objects effect in scene system

作　　者：吴福臣[1] 曲绍斌[1] 金一丞[2] 

机构地区：[1]海军潜艇学院研究生队山东青岛,266071 [2]大连海事大学航海技术研究所,辽宁大连116026

出　　处：《大连海事大学学报》2002年第2期29-31,共3页Journal of Dalian Maritime University

摘　　要：结合《STCW 95公约》对航海操纵模拟器中视景系统的要求 ,就如何正确模拟物标部分呈现的问题进行了研究 .通过分析测者到物标的距离与被测者能见地平距离所遮蔽的物标高之间的数学关系 ,找到了一种实现的方法 .即在恰当运用LOD技术构建全部呈现目标的基础上 ,根据计算出的相应距离阈值 ,适当降低物标高度来模拟物标的部分呈现 .经相关验算 ,利用此种方法实现的物标模拟 ,能较为准确地反映航海实践中物标部分呈现的实际规律 .而且 ,此种方法不仅适合于眼高较低的本船 。In the voyage, because of the influence of the Earth curvature, objects usually emerge with a partly state. Simulating the partly emerging objects in the ship maneuvering simulator, we considered the requirement of the scene system in the STCW 95 convention and analyzed the formula of the distance of the observer to the objects and the height of the objects which covered by the visible range. Finally we found a method which can simulate the partly emerging objects. This method is based on the way of constructing the whole emerging objects with the LOD technology and reducing the proper height of the objects according to the calculated distance. With calculating, we found this method can reflect the rule of the partly emerging objects and can be used both in the high viewpoint ownship and the low viewpoint ownship.

关 键 词：船舶 操纵模拟器 视景系统 物标部分呈现 高度差 

分 类 号：U666.158[交通运输工程—船舶及航道工程]