基于误差模型和扰动量辨识的射程修正方法

建立了理想姿态控制下的射程误差模型,研究了射程误差模型的物理本质、泛函表达形式及射程预测精度.理论分析结果表明,射程偏差和主动段终点参数都是扰动因素的函数,射程预测过程实际上是先利用弹道观测参数辨识扰动因素,再由扰动因素对射程进行预测的过程,得出射程预测精度取决于对射程扰动量辨识精度的结论.提出了一种基于扰动量辨识和误差模型的射程修正方法,获得了良好的仿真效果.

Range Correction Method Based on Error Model and Disturbance Identification

The range error model of rockets with ideal stabilization was built up. Its physical nature, function expressions, and range forecast precision were analyzed. The results of thererical analysis indicate that not only the windbags of rang but also other terminal parameters of active phased trajectory were functions of disturbance. It means that the course of range forecast contain two steps. One is disturbance identify based on the observational parameters of trajectory, and the other is range forecast with disturbance. The conclusion is that the range forecast precision is determined by the accuracy of disturbance identification. A new method for range correction of rockets based on both error model and disturbance identification is established, so that a good simulation result is obtained.