摘要
观测太阳特大高度求船位是一种在特定时机行之有效的天文定位方法.但观测时机大受限制,计算、作图仍较繁琐.本文就该方法观测时机、计算机算法和应用的范围做了一些探讨,得出了观测时间间隔的最简估算公式和计算船位的数学模型,并对应用范围的扩展做了初步的估计.
Fixing by observing very high altitudes of the sun is a special means to get celestial fix.
Hereing, the observing opportunity, the mathematical model and the application limit have been
discussed. The fomula of observing interval and the mathematical model of calculating position
have been obtained,and the application limit has been given.
关键词
天文定位
顶距
特大高度
Celestial fixing
Zenith distance
High altitude
