末制导弹道修正子弹的六自由度建模仿真

6DOF Modeling and Simulation of Terminal Guidance Trajectory Correction Submunition

总体设计阶段利用数字仿真方法验证制导方案是一项重要手段也是后续半实物仿真的基础。脉冲式末制导弹道修正子弹是一种新型简控子母战斗部,它的特点是探测系统为捷联光学成像导引头,控制执行机构为安装在质心附近的一组定推力、单次使用的侧喷式微型固体脉冲发动机。针对子弹上述特点,给出利用捷联导引头测量信息得到制导信号的方法,建立捷联体制下的脉冲比例导引律。在MATLAB/Simulink环境下构建六自由度弹道仿真模型并嵌入制导方法进行验证。仿真结果表明该新型子弹可有效打击地面固定目标,仿真架构正确,控制制导方案可行。

Digital simulation is an important means to verify the guidance navigation and control system in the system design stage and is the foundation for the later semi - physical simulation. Impulsed terminal guided submunition is a new kind of simply controlled cargo warhead. A strapdown optical seeker is equipped on the nose. And a series of jets located around the center of gravity can provide a set of lateral constant correct forces. By using strapdown seeker information, the pulsed proportional navigation （PPN） law is investigated based on the characters of the submunition. The models of 6DOF ballistic trajectory simulation are constructed in the Matlab/Simulink environment. Results indicate that the submuniton can hit the target precisely, the simulation structure is valid and the PPN method is efficient.