资源三号卫星结构稳定性设计与实现  

Structural Stability Design and Implementation of ZY-3 Satellite

作　　者：高洪涛[1] 罗文波[1] 史海涛[1] 莫凡[1] 李少辉[1] 张新伟[1] 刘希刚[1] 曹海翊[1] 

机构地区：[1]北京空间飞行器总体设计部,北京100094

出　　处：《航天器工程》2016年第6期18-24,共7页Spacecraft Engineering

基　　金：国家重大科技专项工程

摘　　要：结构稳定性是影响卫星图像定位精度的重要环节。文章介绍了资源三号卫星在系统、相机、结构等方面为提高结构稳定性所采取的技术措施。资源三号卫星采用3台星敏感器与3台测绘相机一体化设计,并对星敏感器支架和相机支架等关键结构进行高稳定设计,提高星上姿态测量基准与成像基准的匹配精度;测绘相机采用低畸变光学系统设计,以提高相机内部稳定性;基于整星有限元模型对相机光轴在轨指向进行了仿真分析,并开展地面试验对设计和分析进行验证。卫星在轨数据表明:相机支架、星敏感器支架等结构在轨稳定性良好,卫星图像定位精度超过任务指标要求,相关设计、分析与试验技术可为后续高精度遥感卫星提供参考。Structural stability is a key influencing factor for geolocation accuracy of satellite.Structural stability improvement techniques in system design,camera design and structure design of ZY-3satellite are presented in this paper.Three star trackers and three CCD cameras are integrated as a whole,and brackets of star trackers and cameras are designed especially for high stability.All these measures are used to improve matching accuracy between attitude measuring reference and imaging reference.A low distortion optical system is used to improve the internal stability of cameras.On-orbit pointing direction of camera is analyzed based on satellite FEM model,and ground tests are carried out to verify the design and analysis.ZY-3images and telemetry data show that the brackets of camera and the star tracker are stable,and geolocation accuracy of image precedes the mission requirement.The techniques employed in ZY-3can be used in follow-up large-scale mapping satellites and remote sensing satellites with high accuracy.

关 键 词：资源三号卫星 定位精度 结构稳定性 一体化设计 

分 类 号：V423.4[航空宇航科学与技术—飞行器设计] V474.291