随机风对比例导引制导精度影响研究

摘要

The disturbance effect of random wind on missile is analyzed. A proportional navigation guidance system model with random wind disturbance is built and then simplified. The analytic solution is obtained by using adjoint method. Finally, the original proportional navigation guidance system is analyzed in detail. The analytic solution of the simplified model demonstrates that the miss distance caused by random wind varies as the standard deviation of random wind velocity and trends towards a constant value with the guidance time increase. Simulation results show that the increase of proportion navigation coefficient is beneficial to inhibit the harmful influence of random wind on the guidance precision, either improving autopilot response or reducing the damping coefficient have the same effect.%分析了随机风对弹体产生的干扰作用,建立了引入随机风干扰的比例导引制导系统模型,并对模型进行了适当简化,运用伴随法得到了简化后比例导引制导系统的解析解,系统解析解显示随机风造成的脱靶量与随机风的标准差成正比,并随着制导时间的增加趋于一个常值.最后详细分析了未经简化的比例导引制导系统,仿真结果表明:增大比例导引系数有利于抑制随机风对比例导引制导精度的不利影响；提高自动驾驶仪快速性或减小自动驾驶仪的阻尼系数都可以有效减小随机风对比例导引制导系统造成的不利影响.