| 基于预测脱靶量的远程拦截速度增益导引 |
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| 引用本文： | 陈峰,王育林,肖业伦,陈万春.基于预测脱靶量的远程拦截速度增益导引[J].航空学报,2008,29(6):1665-1672. |
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| 作者姓名： | 陈峰 王育林 肖业伦 陈万春 |
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| 作者单位： | 1. 北京航空航天大学宇航学院,北京,100191
2. 中国飞行试验研究院,陕西,西安,710089 |
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| 摘 要： | 针对拦截器使用耗尽关机固体燃料发动机的情况，设计了大气层外目标拦截的速度增益导引方法。导引律中根据Lambert导引确定指令推力方向初值，利用剩余速度增量信息，计算惯性速度增益下的预测脱靶量，使用Kepler轨道摄动方程计算消除脱靶量所需的速度增益修正，根据惯性速度增益和速度增益修正之和确定指令推力方向。给出了一种计及J2项引力摄动影响的滑行段弹道预测半解析方法，减少导引律运算量，降低导引方法误差；导引律中引入了剩余速度增量测量环节，增强了导引精度对推进系统参数的鲁棒性。与传统的通用能量管理（GEM）导引相比，采用该导引律拦截远程目标时指令推力方向平稳、变化范围小，脱靶量降低了两个数量级。
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| 关 键 词： | 预测脱靶量 Lambert拦截 速度增益导引 剩余速度增量 惯性速度增益 J2项摄动 |
Velocity-to-be-gained Guidance Based on Predicted Miss Distance for Long-range Intercept |
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| Chen Feng,Wang Yulin,Xiao Yelun,Chen Wanchun.Velocity-to-be-gained Guidance Based on Predicted Miss Distance for Long-range Intercept[J].Acta Aeronautica et Astronautica Sinica,2008,29(6):1665-1672. |
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| Authors: | Chen Feng Wang Yulin Xiao Yelun Chen Wanchun |
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| Institution: | Chen Feng1,Wang Yulin2,Xiao Yelun1,Chen Wanchun1 (1.School of Astronautics,Beijing University of Aeronautics , Astronautics,Beijing 100191,China) (2.Chinese Flight Test Establishment,Xi\'an 710089,China) |
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| Abstract: | A velocity-to-be-gained guidance law for exoatmospheric targets is proposed for an interceptor with a fuel-exhaustion-shutoff solid rocket motor. First,the assumption is made that the interceptor has attained the inertial velocity-to-be-gained,and the predicted miss distance is obtained by using the parameter of remaining velocity increment. Then the correction of the velocity-to-be-gained is attained by using the perturbation matrix of the Kepler orbit,and the predicted miss distance could be eliminated by... |
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| Keywords: | predicted miss distance Lambert intercept velocity-to-be-gained guidance remaining velocity increment inertial velocity-to-be-gained J2 item perturbation |
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