小天体撞击器GNC系统设计与仿真  

Design and Simulation of GNC System for Small Body Impactors

作　　者：朱圣英[1] 崔祜涛[2] 崔平远[1,2] 

机构地区：[1]北京理工大学深空探测技术研究所,北京100081 [2]哈尔滨工业大学深空探测基础研究中心,哈尔滨150001

出　　处：《系统仿真学报》2011年第1期89-94,共6页Journal of System Simulation

基　　金：国家自然科学基金(60874094)

摘　　要：撞击器在接近目标小天体过程中相对速度较快,这要求撞击器的导航、制导与控制(GNC)系统要具有较高的自主性和实时性。对撞击器GNC系统进行了研究,采用深空环境中常用的传感器及执行机构,对撞击器自主GNC系统进行了构建,并分别设计了自主光学导航算法与轨道修正制导律。最后为了验证所设计GNC系统的可行性和可靠性,进行了严格的六自由度蒙特卡罗数学仿真,同时对机动时刻、撞击目标点等关键参数对最终撞击性能的影响进行了分析。Due to the quite high relatively speed when impactors approach the small body, the guidance navigation and control （GNC） system should be highly autonomous and real time capability to achieving precise impact on small bodies. Based on the common sensors and actuators in deep space mission, a GNC system was composed. Meanwhile, an autonomous optical navigation scheme and a trajectory correction maneuver guide law were proposed. Finally, strict six-freedom Monte Carlo simulations were carried out to validate feasibility and reliability of the GNC system, and the key parameters such as maneuver timing and impact aim point on impact performance were analyzed.

关 键 词：导航 制导与控制 小天体撞击器 自主光学导航 轨道修正制导律 蒙特卡罗仿真 

分 类 号：V474.9[航空宇航科学与技术—飞行器设计]