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在GIS基础上实现导航信息处理时所遇到的若干关键技术问题的研究与实现过程。对导航信息处理中大圆算法的推导、计算以及运动点在地图上的显示优化进行了讨论。
Research and implementation process of some key technical problems encountered when implementing navigation information processing based on GIS. The derivation and calculation of big circle algorithm in navigational information processing and the display optimization of motion points on the map are discussed.