基于发射车摇架,提出一种弹载捷联惯性组件标定方法。在摇架转动自由度范围内,引入发射车小横滚角,实现用5位置法惯组误差参数的全辨识,并用模方逼近法改进刻度因子的辨识,以保证标定精度。实验结果表明,改进后的标定方法,保证了弹体捷联惯组标定精度,降低了对高精度标定转台的依赖,为野外弹载惯组的日常维护提供了安全可信的方法。

Based on launcher's cradle, a calibration method was proposed about strapdown inertial measurement unit (SIMU) in vehicular missile. Within the limit of cradle's rotational degree, and small roll of launch vehicle was introduced, 5-position was used for realization of IMU error parameters identification, and modular square approximation was used to improve calibration factor to ensure their accuracy. The experimental result shows that the improved calibration method provides a safe and reliable way for field IMU's daily maintenance, meanwhile, calibration precision is ensured and dependence on high precision calibration turntable is reduced.