观测低高度太阳方位计算罗经差的软件程序设计  

The Computational Procedure of Seeking Compass Error from Observing the Low Clearance Solar Azimuth

作　　者：李红祥[1] 吴建华[1] 李昊[1] 

机构地区：[1]武汉理工大学航运学院,湖北武汉430063

出　　处：《武汉船舶职业技术学院学报》2009年第4期40-43,共4页Journal of Wuhan Institute of Shipbuilding Technology

摘　　要：通过观测低高度太阳方位计算罗经差是船舶在开阔大洋上航行时求罗经差常用的方法,为了能更加方便、快捷并且准确地求出罗经差,本文在基于Visual Basic(VB)环境的下设计开发了计算罗经差的Visual Basic(VB)软件程序。该软件程序可将观测及查表计算所得的数据直接输入,避免将所得数据类型进行转化再代入公式计算的繁锁,该软件程序能够减小求罗经差的计算量,提高求罗经差的速度、精度及准确率。通过与一般计算器求罗经差的实例进行对照,证明了该软件程序的实用性及应用该软件程序的优越性。Seeking compass error by observing the low clearance solar azimuth is a usual method when ships are sailing at the opened ocean,in order to get the compass error more convenient,fast and Accurate,design Visual Basic（VB） software program about seeking compass error based on Visual Basic（VB） environment.The data from observation and look-up can be input to the software program directly,avoiding the more complex of transforming the data type before inputting the data into formula.The software program has great effect to reduce the calculated amount and raise the speed, precision and AccurAcy of seeking compass error. Through comparison by example which uses ordinary calculator and designed VB software program to seek compass error, it proves that the software program has great PrActicality and superiority to seek compass error.

关 键 词：天体赤纬 天体地方时角 罗方位 VisualBasic(VB) 

分 类 号：U666.151[交通运输工程—船舶及航道工程]