惯性测量组合小角度静态标定方法研究

Method Study of Small Angle Calibration of IMU

简要论述了为延长惯性测量组合的稳定期以及提高惯性测量组合的使用精度, 在位置转台上对惯性测量组合影响精度大的不稳定参数进行自标定的技术, 即利用角速度计去标定低精度陀螺的技术。从理论上讨论了利用加速度计的信息去标定陀螺不稳定参数的方法。提出了小角度标定方法, 给出了小角度静态标定思路, 从理论上对小角度射前静态标定方法存在的综合误差进行了定量分析, 指出了小角度静态标定方法存在的主要问题, 同时提出了相应的改进方法, 使射前静态标定方法理论上可行。

The methods of calibration to the main unsteady parameters of IMU for extending the stable period of IMU and increasing the accuracy of tactical missile are discussed. The method using high accuracy acceleration to calibrate low accuracy gyro is discussed in revolving table. The method of small angle calibration of IMU is discussed ,and the quantitative analysis of calibration erros is discussed. The main problems existed in this methods and how to be improved are also discussed .The improvement make the small angle calibration possible.