擴(kuò)展比例導(dǎo)引法(完整版)
【正文】 target after perception of danger distance, the effect of normal overload and trajectory curvature is analyzed using the extended proportional guidance law by simulation. Compared with traditional PNG laws, simulation results show that the intercept of the target based on extended proportional guidance law under the proper random quantity, when the missile is in close proximity to the target the normal overload fluctuation is improved somewhat. And interception time and normal overload have good performance. Tracking performance for high maneuverability target is better than the classical proportional guidance law.Key words: Extended Proportional Guidance Law。 Normal overload 0 引言傳統(tǒng)的比例導(dǎo)引律是指視線角速度與導(dǎo)彈飛行軌跡傾角的變化率(即指令加速度)成比例，指令加速度作用在視線的垂直方向。若將M點(diǎn)相對(duì)運(yùn)動(dòng)速度沿瞄準(zhǔn)線方向及其法向分解，方程（2）可以變?yōu)? （3）其中，分別為M點(diǎn)相對(duì)速度的徑向分量和法向分量。圖2 目標(biāo)隨機(jī)呈正弦變化（A=400）的彈道軌跡圖3 目標(biāo)隨機(jī)呈正弦變化（A=500）的彈道軌跡將目標(biāo)變軌運(yùn)動(dòng)時(shí)的幅值變?yōu)?00m得追蹤曲線如圖3所示，可見
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