摘要
为了克服高纬度地区经线收敛引起的船用惯导系统无法准确定位的问题,提出将地球坐标系通过旋转构建一个横向地球坐标系,使得高纬度地区的船舶位置实际上是在一个矩形经纬网格区域内,并依据横向地球坐标系对船舶的位置和航向等信息进行计算,然后将计算的结果再变换到地球坐标系内,以此进行船舶的极区导航。理论分析证明,利用本文提出的横向地球坐标系能够对高纬度位置信息进行精确表示,能够满足高纬度地区的船舶导航的精度需求。
The convergence of geographic meridians at the high latitude areas makes steering and positioning extremely difficult when utilizing conventional inertial navigation system. A transverse earth coordinate system is presented by the rotation of the earth coordinate system to cope with the above problems,which makes the ship position of the transverse earth coordinate system in the rectangle grid areas effectively,and the position,velocity and heading of the ship can be reckoned in the transverse earth coordinate system,then the results are converted from the transverse earth coordinate system to the traditional earth coordinate system,so that the polar ship navigation can be achieved. The theory analysis shows that the position information of the high latitudes can be represented precisely by the proposed transverse earth coordinate system,which can meet the precision requirement of the ship navigation in the high latitudes.
出处
《海洋测绘》
CSCD
2016年第3期25-28,共4页
Hydrographic Surveying and Charting
基金
国防科研基金(DJYKY2014-077)
关键词
地球坐标系
横向地球坐标系
高纬度
经线收敛
船舶导航
earth coordinate system
transverse earth coordinate system
high latitude
longitude convergence
ship navigation
作者简介
王海波（1970-）,男,江西鄱阳人,高级工程师,主要从事船舶导航技术研究.
