摘要
首先,为实现激光半主动导引头光轴的快速跟踪目标,根据光轴与弹目视线的误差角大小,将光轴进动速率分为线性区、过渡区和非线性区。为解决角速率的不连续性问题,采用Hermite方法设计了有约束条件下的导引头跟踪回路的进动方案。其次,介绍了激光制导武器的半实物仿真平台,建立了室内环境下的几何数学模型。最后,将未解锁的导引头搭载于五轴转台,以五轴转台的两自由度模拟导引头光轴的进动,其余三自由度模拟弹体姿态运动,通过在远、近边界初始条件下,通过弹道的半实物仿真试验,可以验证,导引头跟踪回路的设计方案在末制导段飞行过程中安全可靠,可以实现精确命中目标。
Firstly, in order to make optical axis of laser semi﹣active seeker track target fast, precession was divided into linear zone, transition zone and nonlinear zone based on error angle between optical axis and line of sight （LOS）. Under some constraint conditions, in response to the problem that precession rate of the seeker was discontinuous, precession scheme of seeker＆#39;s tracking loop was designed with Hermite Method. Secondly, a hardware﹣in﹣the﹣loop simulation （HILS） system of laser guided weapon was introduced, and model of geometry was founded in indoor environment. Finally, the locked seeker was fixed on Five﹣Axis Turntable, which was used to simulate the precession of seeker and attitude movement of missile. In two initial conditions of handoff, the results of trajectory HILS prove that the designed scheme of seeker＆#39;s tracking loop is feasible for terminal guided weapon, and is able to hit the target precisely.
出处
《红外与激光工程》
EI
CSCD
北大核心
2014年第11期3603-3607,共5页
Infrared and Laser Engineering
基金
国家自然科学基金(61172182)
