机动再入飞行器的一种预测制导方法  

A Prediction Guidance Algorithm for the Maneuvering Reentry Vehicle

作　　者：郑立伟[1] 荆武兴[1] 

机构地区：[1]哈尔滨工业大学航天工程系,哈尔滨150001

出　　处：《宇航学报》2006年第B12期19-23,共5页Journal of Astronautics

摘　　要：研究了机动再人飞行器返回地面固定目标的一种预测制导方法。利用高斯方法解算出再人过程中飞行器需要的最小速度增量，将其转换成速度坐标系下需要的气动力，通过调整其攻角以及侧滑角来达到控制飞行器的目的，从而得到了一种预测制导方法。仿真显示，此算法简单，运算速度快，具有较高的落点精度，且对大气密度的不确定性及导航信息偏差具有较强的鲁棒性。A new prediction guidance law for maneuvering reentry vehicle is investigated under a wider variety of reentry conditions. The minimum velocity increment of vehicle to reach the fixed target on the ground is computed by resolving Gauss equation and Newton iteration equation, to achieve this goal, the required aerodynamic force is derived by adjusting vehicle＇ s angle of attack and sideslip angle. Simulation results show that the presented algorithm could satisfy the landing error, and compare with the traditional nominal trajectory guidance method, the algorithm is easy of implementation and capable of tolerating atmospheric disturbances as well as navigation error.

关 键 词：高斯问题 机动再人飞行器 预测制导法 

分 类 号：V448.235[航空宇航科学与技术—飞行器设计]