摘要
传统测量船船载雷达测速数据修正方法,忽略了船体摇摆、升沉、侧向移动等因素对天线速度造成的影响,仅使用航向数据和计程仪测速数据计算天线相对大地的速度。对传统修正方法的推导过程进行分析,发现了该修正方法回避了一些误差项,并在其简化公式中找出了忽略的误差部分。针对该方法所忽略的误差,建立了一种更加完善的多普勒测速修正方法。新方法包含了两个子模型:基于全球定位系统测速的惯性导航平台速度模型和目标速度修正模型。为了验证其精度,在精度校飞任务、近地轨道任务和远地轨道任务中分别对数据本身精度和定轨情况进行了检验。结果表明,新方法较传统方法在消除随机误差方面有很大的改善。
In traditional speed-measuring method correction method for measured data from radar onboard space tracking,telemetering and command（ TTC） ship,the effects of ship waggling,heaving and lateral movement on speed of antenna are ignored.In the traditional method,only the course data and the ship speed data are used to calculate the speed of radar antenna relative to the earth.By analyzing the derivation process of the traditional method,it is found that some systematic errors are ignored,which are found in simplified formula.A speed-measuring correction method is established to eliminate these systematic errors.The proposed method contains two sub-models： inertia navigation platform speed model based on GPS velocity determination,and object speed correction model.The data accuracy and orbit determination are tested in checking flight,near-earth orbit task and far-earth orbit task.The result shows that the proposed speed correction method is superior to the traditional method in the aspect of eliminating random error.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2017年第11期2268-2273,共6页
Acta Armamentarii
关键词
信息处理技术
船速修正
全球定位系统
惯性导航平台
精度校飞
测量船
information processing technology
ship speed correction
GPS
inertia navigation platform
flight check data
TTC ship
