文中研究基于弹速传感器辨识弹道时气温气压对辨识精度的影响及其修正方法,目的在于将该方法应用于非标准气温气压条件。通过试验和仿真计算,发现气温气压与弹丸飞行关键时间点速度均满足一次线性拟合关系。提出了一种修正非标准气温气压对弹道辨识精度影响的系数修正法,考虑了气温气压的共同作用对弹丸飞行关键时间点速度的影响,给出了一般化的数学表达式。试验证明,辨识误差满足预期要求,拓展了该方法的应用领域。

In this paper, the influence of atmospheric temperature and air pressure on the identification accuracy based on the bullet speed sensor identification and its correction method are studied. The purpose is to apply this method to non-standard conditions. Through experiments and simulation calculations, it was found that the atmospheric temperature and the air pressure all meet a linear fitting relationship with the critical time point speed of bullet. A coefficient modification method for correcting the influence of non-standard on ballistic identification accuracy is proposed. The effect of atmospheric temperature and air pressure on the critical time point speed of bullet is taken into account and a generalized mathematical expression is presented. Tests have proved that the identification error meets the expected requirements and extends the application of the method.