捷联惯导系统中补偿安装误差的优化算法研究

Research on Optimization Algorithm of Gfsins Compensating Fixed Errors

在无陀螺捷联惯导系统中,以高自旋弹丸运动姿态测试为研究背景,针对以往解算载体角速度精度不高,导航误差随时间积累较快的问题,提出一种新的十二加速度计配置方案。并在此方案下采用了一种提高角速度解算精度的优化算法,该方法运用阻尼高斯牛顿迭代法对加速度计的安装误差进行补偿修正。进行相应的仿真试验,并与理论值进行误差分析,证实了该方案的可行性和算法的有效性。

In the gyroscope-free strap-down inertial navigation system, with the background of high-speed projectile attitude measurement to study., a new twelve-accelerometer model is set up based on improving angular velocity calculation precision and reducing navigation error accumulated over time. Using an optimization algorithm which can improve angular velocity calculation precision. The method is using damping Gauss-Newton iteration algorithm for compensating and amending the installation errors of the twelve-accelerometers. After simulation testing, comparing and analyzing with the theoretical value, the results show that the angular velocity calculation precision is obviously improved by the new method.