计算机辅助单天体定位及精度分析  

Computer-aided single celestial-body positioning and precision analysis

作　　者：贾海红[1] 吴建华[1] 赵薪[2] 马壮[2] 

机构地区：[1]天津理工大学机械工程学院,天津300384 [2]天津理工大学海运学院,天津300384

出　　处：《天津理工大学学报》2009年第6期31-34,共4页Journal of Tianjin University of Technology

基　　金：天津市教委高校科技发展基金(20071121)

摘　　要：如今普遍应用的GPS以其较高的精度赢得了航海者的青睐,但当船舶导航设备发生故障时,或离开定位卫星就会成为瞎子.天文定位是航海学中获取船位的一种可靠方法,通过观测、查表、解算和作图等步骤实现船舶定位.本文利用计算机辅助超越方程求解和精度补偿理论实现太阳移线定位,简化了步骤,节省了时间,提高了定位精度.GPS is now widely used for its high accuracy to win the favor of the sailors,but when the ship navigation equipments turn out failure,or leaving positioning satellites,it will become blind.Astronomical positioning is a reliable way to obtain ship s positions in the navigation.Ships positions could be achieved by the steps of observing,looking-up table,calculating and mapping.In this paper,we use computer-aided solution of transcendental equation and theory of precision compensation to realize the sun shift line positioning, to simplify the steps, to save time and improve the positioning precision.

关 键 词：天文定位 太阳移线定位 精度补偿 定位精度 

分 类 号：U675.6[交通运输工程—船舶及航道工程]