单台光学设备跟踪再入目标的外弹道计算方法

摘要

利用单台光学设备测量再入目标的俯仰角及方位角,确定再入目标的外弹道参数.根据再入目标的动力学方程及单台光学设备的测量方程得到再入目标的运动方程组,根据单台光学设备测量再入目标的观测角度序列,采用最小优化方法联合求解该方程组,可以估计再入目标的气动参数及再入目标的外弹道参数.数值仿真验证显示,该方法能够比较准确估计再入目标的气动参数,同时得到再入目标的外弹道参数.%This paper introduces a new method to estimate the trajectory of re-entry target with the measurement data of single optics. Nonlinear equations are obtained according to the target re-entry kinematics model and optics's measurement angles. Aerodynamic parameters and the target trajectory are derived from these equations by the minimized optimization method. The simulation results show that the accuracy of the estimated trajectory is improved by using the new method.