摘要
因为地球对于导航卫星电磁波信号来说是不透明的,因此高程精度因子VDOP值通常总大于水平位置精度因子HDOP,导致了GNSS接收机在竖直方向上的定位结果没有水平方向理想,也直接影响到和惯性导航系统INS组合后即GNSS/INS组合导航系统的测量精度。文章提出了一种使用气压高度计辅助GNSS/INS组合导航系统并提高其测量精度的方法,从大气压强传感器出发,介绍了高度计测量系统的组成和工作原理,并阐述了各部分的电路设计及其工作流程。为了验证设计效果,对该系统进行了测试,结果表明该方法可以有效地提高组合导航系统测量精度,可用于普通导航领域。
Because the earth is opaque to the navigation satellite electromagnetic wave signal,the VDOP( Vertical Dilution of Precision) value is usually greater than the HDOP( Horizontal Dilution of Precision),which results in the positioning result of the GNSS( Global Navigation Satellite System) receiver in the vertical direction is not ideal in the horizontal direction and also directly affects the measurement precision of the GNSS/INS integrated navigation system. A method by using the barometric altimeter to assist the GNSS/INS integrated navigation system is proposed after being combined with the inertial navigation system INS( Inertial Navigation System). Starting from the atmospheric pressure sensor,the composition and working principle of the altimeter measurement system are introduced,and the circuit design of each part is explained. In order to verify the design effect,the system is tested. The results show that the method can effectively improve the measurement accuracy of the integrated navigation system and can be used in the general navigation field.
作者
刘善武
陈帅
谭聚豪
顾得友
Liu Shanwu;Chen Shuai;Tan Juhao;Gu Deyou(Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《航天控制》
CSCD
北大核心
2019年第5期75-80,共6页
Aerospace Control
基金
中国博士后基金(2015M580434)
中国博士后基金特别资助(2016T90461)
中央高校基本科研业务费专项资金资助(30916011336)
江苏省博士后科研资助计划(1501050B)
国防基础科研计划(JCKY2016606B004)
