摘要
为解决现有等距离大圆航线设计方法在高纬度地区、极区附近及航线起始点与目标点纬度接近等情况下设计过程中航向角可能出现奇异现象和设计结果不可信等问题,根据球面三角形原理,推导等距离大圆航线详细设计过程。结合多个算例分析现有设计方法的局限性和产生偏差最终导致结果不可信的根源,验证所设计方法在高纬度地区、极区附近及航线起始点与目标点纬度接近时应用于大圆航线设计的准确性和有效性及对一般航线设计的广泛适用性,为该方法的推广应用奠定基础。
The commonly used equidistant great circle route planning method is unreliable and may have the singularity problem in calculation when planning a route in a high latitude area,or a route of approaching the polar zone or when the latitude difference of the waypoints is small. The process of equidistant great circle route planning with detailed spherical triangle derivation is analyzed,the limitations and the causes of the reliability problem are identified. An improved design method is derived and verified through calculation examples representing normal situation and above mentioned three special situations.
作者
朱银兵
李豹
曹可劲
ZHU Yinbing;LI Bao;CAO Kejin(Institute of Electric Engineering,Naval University of Engineering,Wuhan 430033,Chin)
出处
《中国航海》
CSCD
北大核心
2018年第2期1-4,共4页
Navigation of China
关键词
航线设计
大圆航线
等距离
球面三角形
route planning
great circle route
equidistance
spherical triangle
