目标运动仿真子系统的精度分析

Accuracy Analysis of the Simulation Subsystem of Target Movement

目标运动仿真子系统是寻的制导导弹半实物射频仿真系统的主要误差源,本文系统地分析了这个子系统的精度。采用Hannan-Risscanen方法建立了子系统的误差模型,通过全弹道仿真,定量地给出了子系统的误差对仿真结果的影响。进一步结合仿真系统和误差模型的特点,探讨了误差校正方案,并给出了自适应滤波校正方案的仿真算例。

The Simulation subsystem of the target movement(SSTM)is a major error source in the hardware-in-the-loop radio frequency simulation system of the semi-active homing missilc. A detailed discussion about the accuracy of the SSTM has been made in this paper. According to the experimental data, the error model of the SSTM has been estimated by us-ing Hannan and Risseanen algorithm. Depending on the model, the digital results of the in-fluence casued by the subsystem error have been obtained by comparing the simulation of theoritical trajectory with the simulation pollutted by two kinds of noises(ARMA(1,1)noise and pure white noise). Finally some methods for eliminating the influence have been investigated, and the simulation example or which has been performed by using adaptive filter.