计算罗经差软件的开发与研究  

Development and Study of Calculating Compass Error Software

作　　者：吕金华[1] 

机构地区：[1]武汉船舶职业技术学院,武汉430050

出　　处：《武汉理工大学学报（交通科学与工程版）》2013年第1期209-212,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：结合观测低高度太阳方位计算罗经差的原理、方法及步骤,在基于Visual Basic(VB)的环境下设计开发了计算罗经差的软件.该软件程序通过分析航海天文历中的数据规律,得出航海天文历中的相关数据满足等差数列规律,根据此规律建立数据库,并结合计算罗经差的计算公式,利用VB语言编写出计算罗经差的完整软件.该软件可将观测及给定的船位数据直接输入,避免查表及数据计算的繁锁,可以有效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.With the principle, methods and steps of seeking compass error from observing the low clear- ance solar azimuth, the software program about seeking compass error based on VB environment has been given out. By analyzing the data regularity of Nautical Almanac to get the result that the data of Nauti- cal Almanac shows the pattern of an arithmetic series, then with the data regularity and compass error＇s com- puting formula, a perfect software of calculating compass error is designed with computer language Visual Bas- ic. The data from observation and given can be input to the software program directly, avoid the complex of table lookup and data calculation, the software program has great effect to reduce the calculated amount and raise the speed, precision and accuracy of seeking compass error.

关 键 词：罗经差 航海天文历 VISUAL Basic(VB) 

分 类 号：U666.151[交通运输工程—船舶及航道工程]