利用Simulink仿真的弹道辨识算法精度分析

Accuracy Analysis of Trajectory Identification Algorithm Based on Simulink Simulation

弹道辨识精度是衡量弹道辨识系统工作性能的重要指标.为了在硬件设计前对辨识算法的精度进行预评估,提出一种利用Matlab/Simulink模块对自主式弹道辨识新算法进行建模的仿真.该算法是基于比较名义弹道与实际弹道在上升初始段的水平距离来实现对弹丸射程偏差的预测.建立弹道数学模型,获得仿真初始参数,运用Simulink模块生成仿真模型.仿真结果表明该射程辨识算法预测相对误差为0.783%,满足弹道修正引信的精度要求.

The accuracy of trajectory identification is an important index of trajectory identification system performance. Aiming at a new algorithm of self-determination trajectory identification, a simulative method based on Matlab/Simulink software was presented to evaluate the algorithm accuracy. The range deviation was predicted by comparing the horizontal distances of which the projectile had traveled along its active trajectory and nominal trajectory on the up leg. The mathematical model of trajectory was established, and the model of actual trajectory in Simulink was given according to calculating initial parameters. The result of simulation shows that the accuracy of algorithm meets the requirement of trajectory correction fuse.