摘要
针对月球探测器月面软着陆与巡视勘察任务特点,进行需求分析和细化,识别出月面探测任务过程中着陆器动力下降、巡视器释放分离、两器月面工作状态、月面区域地貌状态等成像观测任务的关键环节,兼顾设计约束,开展成像仪器系统设计。基于各个成像观测任务关键环节,结合月面状态、探测器姿态和光照条件之间的相互影响,从成像仪器视场遮挡情况、成像目标的阴影状态、视频的连贯性和数据传输的匹配性等方面,确定成像仪器配置及功能和性能参数。此成像观测任务设计已通过嫦娥三号探测器的在轨验证,为探测器状态的判断、分析及任务实施过程的评估提供了支撑,可为后续深空探测的成像观测任务设计提供参考。
In accordance with task characteristics of soft landing and rover survey for the lunar explorer,the task demand is analyzed and refined.The key processes are identified,including imaging observation task of lander powered descent,rover releasing and separation,lander/rover active state on the lunar surface and topography status of lunar surface.The design constraints are satisfied synchronizedly.The system design of imaging instruments is developed.Based on each key process of imaging observation task and combined with interrelationship among lunar surface status,explorer attitudes and illumination condition,the collocations,functions and performance parameters of visibility instruments are determined in the aspects of occlusion conditions of visual instruments＇ field of view,shadowed status of imaging object,consistency of video imageries,matching of data transmission and so on.This design has been verified by on-orbit Chang＇e-3lunar explorer,and provides the supports for judgment and analysis of explorer state and assessment of implementation process.It can be used as a reference for imaging observation task of deep space exploration.
出处
《航天器工程》
北大核心
2015年第5期14-22,共9页
Spacecraft Engineering
基金
国家重大科技专项工程
