The Application of Digital Map in SINS In-Motion Initial Alignment

被引：0

作者：

Han, Yongqiang ^{[1
]}

Chen, Jiabin ^{[1
]}

Liu, Wei ^{[2
]}

Wu, Weisheng ^{[1
]}

Sun, Shoucai ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Humanities & Social Sci, Beijing 100081, Peoples R China

[2] Chinese Acad Sci, Acad Optoelect, Beijing 100094, Peoples R China

来源：

CSNC 2011: 2ND CHINA SATELLITE NAVIGATION CONFERENCE, VOLS 1-3 | 2011年

关键词：

in-motion alignment; inertial frame alignment; digital map; Ring Laser Gyroscope (RLG);

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Traditional In-Motion initial alignment method for SINS based on inertial frame requires a relatively high precision in positioning during the alignment period, which put a strict limit on coarse alignment as well as the route and alignment time. Digital map is introduced into the In-Motion alignment and a novel working mode is designed, with the aid of Map-Match algorithm, the initial positioning accuracy is greatly improved in any speed or route, which reduces the affect of misalignment angle from coarse alignment for positioning error and thus reduces the limits on vehicle speed and route. Road tests results have shown that the integration of digital map and RLG SINS has eliminate the requirements of speed and routes for land vehicles, greatly reduces the affect of coarse alignment for azimuth accuracy. It not only enhances the mobility of land vehicle but also improves the accuracy of initial alignment of inertial navigation system, and is meaningful in real application.

引用

页码：1556 / 1561

页数：6