摘要
为提高天测罗经差天体计算方位的精度,提出采用计算机辅助设计(Computer-A idedDesign,CAD)的方法进行天测罗经差的天体方位计算.该方法综合考虑纬度误差、经度误差和赤纬误差所引起的计算方位误差,通过人机对话等方式,显示天体计算方位误差的变化曲线,选择观测天体罗方位的最佳时机,实现天体方位计算的精度要求.该方法提高罗经差的可靠性,可供船舶驾驶员借鉴.
In order to improve the precision of the celestial body's azimuth-calculation with the compass error by celestial observation, a method is proposed based on computer-aided design (CAD). According to this method, the errors of the azimuth-calculation caused by latitude errors, longitude errors and declination errors are synthesized. By the help of the man-machine conversation, the variation curve of errors in the celestial body' s azimuth-calculation is showed on the computer, the best observing time about the celestial body' s azimuth can be selected, and the requirements of the precision of the celestial body' s azimuth-calculation can be satisfied. It improves the reliability of the compass error, and can be used by ship officers for reference.
出处
《上海海事大学学报》
北大核心
2009年第2期44-47,共4页
Journal of Shanghai Maritime University
关键词
人机对话
罗经差
天体方位
计算机辅助设计
man-machine conversation
compass error
celestial body azimuth
computer-aided design