陆用车载组合导航系统里程仪快速标定

为减小里程仪刻度因子误差对组合导航精度的影响,分析了安装误差以及轮胎内外温度与里程仪刻度因子的关系,提出组合导航系统中里程仪快速标定法,推导出组合导航系统卡尔曼滤波方程,进行系统仿真。结果表明,将里程仪刻度系数进行标定后,里程仪刻度系数误差明显提高两个量级,里程仪测量输出数据的准确度也明显提高,同时组合导航的定位精度也得到了提高。

A fast calibration of odometer for land vehicle navigation system

To reduce the odometer（OD） scale factor error on the accuracy of intergrated navigation system, this paper analyzed the installation error and the relationship between inside and outside temperature of tire and the scale factor of OD, proposed navigation system OD fast calibration method, derive the equation of Kalman filter integrated navigation system. Simulation results show that this fast calibration method can effectively improve on the scale factor of OD and the accuracy of the output measuring date, which means the positioning precision can be impoved.