陆基导弹的无陀螺捷联惯导系统粗对准  

Coarse alignment based on GFSINS of terrestrial missiles

作　　者：程子健[1] 史震[1] 杨杰[1] 岳鹏[1] 

机构地区：[1]哈尔滨工程大学自动化学院,哈尔滨150001

出　　处：《中国惯性技术学报》2010年第4期410-413,共4页Journal of Chinese Inertial Technology

基　　金：国家高技术研究发展计划项目(2008AA09Z204)

摘　　要：基于一种九加速度计配置方案,给出了开平方法解算载体角速度的解算过程,并分析了无陀螺捷联惯导系统粗对准原理。由于开平方法解算角速度存在符号判断问题,所以在静基座下,系统初始对准时得不到载体角速度而导致地球自转角速度在载体坐标系上的分量无法获得。针对陆基发射导弹的无陀螺捷联惯导系统问题,提出了一种根据陆基发射导弹的初始纬度和航向角来判断载体角速度符号的方法,把此方法与开平方法解算公式结合起来可得出载体角速度矢量,进而完成陆基发射导弹无陀螺捷联惯导系统的自主式粗对准。Based on a nine-accelerometer configuration scheme,the calculation formula of angular velocity by the method of taking square roots is given,and the coarse alignment theory of gyroscope free strap-down inertial navigation system（GFSINS） is analyzed.Since there were problems of symbol misjudging in using square-root algorithm to calculate the angular velocity,the components of earth rotation rate in vehicle body coordinate couldn’t be obtained in GFSINS initial alignment on static base.Based on GFSINS of terrestrial missiles,an approach using the initial latitude and azimuth of terrestrial missiles to determine the symbol of angular velocity is put forward.After obtaining the angular velocity vector by using the above approach to determine its symbol and using the given formula to calculate its amplitude,the autonomous coarse alignment of terrestrial missile GFSINS is then realized.

关 键 词：无陀螺捷联惯导系统 加速度计配置 角速度 粗对准 

分 类 号：U666.1[交通运输工程—船舶及航道工程]