摘要
为了提高舰载局部捷联惯导系统的导航精度,希望能够在传递对准过程中,对船体甲板变形进行估计,对惯性器件的某些误差进行标定,并进行补偿。作为参数匹配传递对准方法之一的角速度匹配法为此提供了可能。文中对角速度匹配法中的三种不同海况下的系统状态可观测性进行了详细的分析,并对船体甲板变形和陀螺漂移进行了Kalman滤波估计及精度分析。研究结果表明,这一方法具有较好的对准精度和快速性,但具体情况随船体的运动情况而不同。
Estimating the deformation of ship＇s deck and calibrating the certain errors of inertial instruments can improve the navigation precision of local SINS during transfer alignment. Angular rate matching, as one of transfer alignment methods, is such a potential method. The system observability with angular rate matching under three different sea condition is analyzed in detail, and the deformation of ship＇s deck and the constant drift of the gyros is estimated using Kalman filter, and their precision is interpreted. Study results show that the method has good performance in alignment precision and response time, but the specific cases differ with the different ship＇s motions.
出处
《中国惯性技术学报》
EI
CSCD
2005年第4期1-5,共5页
Journal of Chinese Inertial Technology
基金
国防"十五"预研项目
