基于ARMA模型的引信系统动态精度测定方法

Dynamic Precision Measurement of Fuze System Base on ARMA Model

摘要:

引信系统静态试验满足精度指标后,要在导弹和目标处于相对运动的状态下,进行动态精度测定以检查引信系统输出值相对标准值的误差,决定是否需要校正精度。对引信系统误差序列建立ARMA模型后,使用现场数据辨识模型参数,并使用残差白性分析和零极点分析对模型进行了检验,基于该模型所预测的误差数据,对引信系统的动态精度进行简易测定,其结果与靶场试验测定结果一致,表明该方法可作为一种适用于现场的动态精度测定方法。

Abstract:

Dynamic precision measurement of fuze system is used to test whether the error between system outputs and its standard value can meet the precision requirement in the status of relative movement between missile and target. Based on the field data of missile, ARMA model of error sequence was constructed. After identified model parameters, residual verification and pole-zero analysis were applied to verify the correctness of the model. Finally, dynamic precision was measured by the error data that was produced by the ARMA model. Measurement result was corresponding with field trial, which indicated the validity of this method.