改进正弦算子的弹道交接自适应算法  

Adaptive Algorithm of Trajectory Shift Basedon Modified Sine Functional Operator

作　　者：田宏亮 梁晓庚 贾晓洪 李记新 

机构地区：[1]中航工业空空导弹研究院,河南洛阳471009

出　　处：《电光与控制》2012年第1期22-24,共3页Electronics Optics & Control

摘　　要：为了实现组合制导,用二阶吻合法设计了一不同制导律间的指令交接导引段。对正弦算子进行改进,建立了自适应弹道交接导引算法的模型,通过分析弹体时滞参数对算法参数的影响,并以积累的弹道航向误差最小化为依据,设计了算法的参数。所得算法与基于正弦算子的弹道交接自适应算法比较可知:前者的积累弹道航向误差更小,参数取值范围更大,从而能更好地实现不同制导律弹道的平滑过渡。通过后向尾追仿真可知:前者脱靶量更小,弹道更光滑,所得算法结构简单便于应用。To realize composite guidance, a command shifted-guidance phase used between two different guidance laws was designed by using 2-order fitting method. The model of adaptive trajectory shift guidance algorithm was presented based on modified sine functional operator. By analyzing the influence of missile time-delay parameter on the algorithm parameter, we designed the algorithm parameters in order to minimize the accumulated error of trajectory course. Compared with adaptive algorithm of trajectory shift based on sine functional operator, the obtained algorithm had smaller accumulated error of its trajectory course and wider parameter range, and performed better in implementing smooth transition between different trajectories with various guidance laws. Simulation showed that the obtained algorithm has less miss distance and smoother trajectory, and the simple structure makes it suitable for application.

关 键 词：组合制导 自适应交班 平滑过渡 二阶吻合法 指令交接导引段 

分 类 号：V448.133[航空宇航科学与技术—飞行器设计]