一种非线性方案弹道跟踪算法

Nonlinear Algorithm for Flight Trajectory Tracking

为了保证飞行器对方案弹道跟踪的精确性,设计了一种输出指令为加速度值的三维非线性制导律.选择方案弹道上的点作为参考点,利用飞行器的位置及速度信息,得出一种导引飞行器跟踪曲线弹道的非线性过载制导指令.从时域角度分析了参考点的选择方法.仿真结果表明,采用非线性制导律能够保证飞行器准确跟踪设计弹道,满足高精度制导要求.

To make the flight vehicle track the curved trajectory precisely,a 3D nonlinear guidance command with output of accelleration was designed.The point on scheme trajectory was chosen as the reference point.Using the position coordinate and velocity of flight vehicle,nonlinear overload guidance command by which the flight vehicle tracked the curved trajectory was proposed.The method of choosing reference point was analyzed in aspect of time domain.The simulation result shows that the guidance order can make the guided projectile track the trajectory precisely.