排序方式: 共有83条查询结果,搜索用时 15 毫秒
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结合无人战斗机和末敏弹的特点,对基于无人战斗机机载平台的末敏弹工作原理及特点进行了阐述,并分析其工作过程,提出了发展无人战斗机载末敏子弹药的构想。 相似文献
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运用试验手段分析了激光半主动导引头的角速度噪声特性,得到了激光半主动导引头的角速度噪声为白噪声的结论。建立了比例导引制导系统模型,并对模型进行了简化,解出了简化模型的解析解,进行了无量纲化分析。对制导系统进行了仿真分析,仿真结果表明:角速度噪声引起的系统无量纲脱靶量均方根随着制导时间的增大趋于一个稳态值,这个稳态值随着比例导引系数的增大而增大。最后研究了系统延时环节对角速度噪声引起的系统无量纲脱靶量均方根的影响,研究结果表明:系统的延时越大,角速度噪声引起的无量纲脱靶量均方根越大。 相似文献
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针对复杂战场环境下分布式无人机对多目标协同打击任务,提出多目标攻击的任务分配与轨迹优化算法。建立典型多目标打击的任务场景和无人机模型;基于Delaunay三角形理论,以禁飞区为节点构建搜索地图;运用A*算法实现威胁最小的单机路径搜索;在无人机动力学约束和能耗损失最小的基础上,引入时间调节因子,采用基于贝塞尔曲线的分布式无人机时空同步轨迹优化方法,得到对多目标同时打击的优化轨迹;设计轨迹跟踪控制器,对预规划轨迹进行跟踪仿真。仿真结果表明,多目标攻击的任务分配与轨迹优化方法能够对多目标实现多角度、时空同步、分布式协同打击,且对噪声及阵风等具有较强的抗干扰能力。 相似文献
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Time-to-go weighted optimal trajectory shaping guidance law 总被引:2,自引:0,他引:2
For maneuvering target,the optimal trajectory shaping guidance law which can simultaneously achieve the designed specifications on miss distance and final impact angle was deduced using optimal control theory based on the time-to-go weighted function.Based on the same cost function,the closed-form solutions of the guidance law were derived when the initial displacement of missile,final impact angle,heading error and target maneuver was introduced into the lag-free guidance system.To validate the closed-form solutions,the simulation of the lag-free system was done and the simulation results exactly matched the closed-form solutions and only when the exponent is greater than zero,the final acceleration approaches to zero. 相似文献
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The guidance and control strategy for endoatmospheric kinetic interceptor controlled by lateral pulse thrusters was detailed.The pulse thruster control system was firstly proposed.The sample-and-hold a... 相似文献