摘要
全球导航卫星系统(GNSS)存在易遭屏蔽、易受干扰等缺点,故在GNSS信号缺失时,SINS系统的积累误差长时间得不到校正,传统的SINS/GNSS组合导航系统的导航性能迅速降低。当SINS采用微机电(MEMS)器件时,更是如此。为提高车载组合导航系统的导航精度,提出在GNSS信号拒止时,采用里程计(ODO)辅助SINS,并加以动态零速修正的方法,来提高系统的导航定位精度。跑车试验结果显示在GNSS短时拒止时,基于动态零速修正的SINS/ODO组合导航具有较高的导航定位精度。
Global navigation satellite system(GNSS)is vulnerable to shielding and interference,then when the GNSS signal is missing,the accumulated errors of SINS system can not be corrected for a long time,and the navigation performance of traditional SINS/GNSS integrated navigation system is decreased rapidly.This is especially true when the SINS is MEMS device.In order to improve the navigation precision of the land-vehicle integrated navigation system,the method of adopting ODO to assist SINS and dynamic zero velocity update(DZUPT)is proposed,when the GNSS signal is invalid.The vehicle experiment results show that the SINS/ODO integrated navigation based on dynamic zero velocity update(DZUPT)has higher navigation and positioning precision in the case of GNSS short-time denial.
作者
王琛
陈安升
陈帅
韩林
谭聚豪
Wang Chen;Chen Ansheng;Chen Shuai;Han Lin;Tan Juhao(Nanjing University of Science and Technology,Nanjing 210094,China;Automation Control Equipment Institute,Beijing 100074,China)
出处
《航天控制》
CSCD
北大核心
2019年第3期25-30,共6页
Aerospace Control
基金
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(30917011105)
江苏博士后科研资助计划(1501050B)
