激光末制导炮弹欺骗式干扰的仿真

Simulation of Fraudulent Jamming for Laser Final Guidance Shell

激光末制导炮弹欺骗式干扰仿真需建立其弹道、外部环境和欺骗式干扰等模型。弹道模型由炮弹无控自由飞段、惯性制导滑翔段和末制导段按比例导引制导率建立。外部环境模型据臭氧、水蒸气等对激光吸收透过率和云、雨、尘散射透过率建立。欺骗式干扰仿真模型由真假目标在导引头探测器上形成的激光弥散斑的能量建立。通过设定欺骗式干扰发射机位置和干扰发射功率、真假目标距离,采用Simulink仿真即可计算出炮弹的脱靶量。

The simulation of fraudulent jamming for the laser final guidance shell needs to set up the models of trajectory, environment and fraudulent jamming. The trajectory model consists of the uncontrolled free flight segment, the inertial guided glided segment and the final guidance segment, which accords with the proportional guided law. The environment model is founded according to the absorbing rate of ozone and vapor, and scatter transmitting rate of cloud, rain and dust for the laser. The fraudulent jamming model is established according to the laser energy distribution on the detector of seeker, which is formed by the true target and the false target. Through setting the position and the emissive power of the fraudulent jammer and the distance between the true target and the false target, the target-missing quantity can be figured out with the method of Simulink simulation.