靶区大气环境对再入体落点精度影响仿真研究

Simulation of Influence of Range Atmosphere on RV Placement Accuracy

利用美国Cape Canaveral靶场近十年气象观测统计资料,建立靶区大气环境逐月蒙特卡洛样本集,在其基础上,利用Matlab/Simulink/RTW仿真工具,针对欧洲EXPERT/REV再入体,建立非线性六自由度飞行仿真模型,并对其落点参数进行了逐月蒙特卡洛仿真研究。统计结果表明,对于弹道式再入体,Cape Canaveral靶区大气静态参数变化和风场扰动所导致的落点散布随季节有较大变化,其中风场扰动的影响起主要作用。

Based on the meteorological date of recent 10 years in Cape Canaveral range, the atmosphere environment Monte Carlo samples were gotten for each month. Then in Matlab/Simulink/RTW environment, a nonlinear 6-DOF model of EXPERT/ REV reentry vehicle was developed and placement parameters were gotten based on Monte Carlo. The statistical results show that, for ballistic vehicle, placement deviation, influenced by temperature, pressure, density and wind, change a lot along with season＇s transformation. The wind disturbance has the main effect on this change.