摘要
环境减灾二号A/B卫星是国家民用空间基础设施中首批启动的业务卫星,星上配置有16 m相机、高光谱成像仪、红外相机和大气校正仪4种光学载荷,具备可见光、高光谱和红外对地成像能力,以及在轨大气同步探测功能。两颗卫星均采用CAST2000公用平台,设计寿命5年,单星质量1065 kg,运行于标称轨道高度为645 km的太阳同步回归轨道。两星在轨组网运行,可实现16 m相机和红外相机2天对全球南北纬80°以内地区全覆盖观测。文章概述了环境减灾二号A/B卫星的主要技术方案,总结了载荷设计新技术、多载荷匹配设计、多样化定标、视觉监测,以及轨道冻结等技术创新点,并介绍了在轨测试和典型应用情况,可为我国后续环境减灾监测遥感卫星系列发展提供参考。
HJ-2A/B satellites are the first operational satellites developed in the China’s civilian space infrastructure,which are equipped with four optical payloads:16m camera,hyperspectral imager,infrared camera and atmospheric corrector,and have the capabilities of visible light,hyperspectral and infrared imaging to the earth,as well as on-board atmospheric synchronous detection.The two satellites adopt the CAST2000 public platform,with a design life of 5 years,a single satellite with a mass of 1065kg,and operating in a sun-synchronous regression orbit with a nominal orbital altitude of 645km.The two satellites operate in an on-orbit network,which can realize the full coverage observation of the global area within 80°north and south latitude within 2 days by 16m camera and infrared camera.The main technical scheme of satellite is described,and the technological innovations such as new payload design technology,multi-payload matching design,diversified calibration,visual monitoring,orbit freezing and so on are summarized.In addition,the on-orbit test and typical applications are introduced.The technical data are very useful for follow-on development of environment and disaster reduction monitoring satellites.
作者
白照广
董筠
朱军
孙纪文
马磊
BAI Zhaoguang;DONG Jun;ZHU Jun;SUN Jiwen;MA Lei(DFH Satellite Co., Ltd., Beijing 100094, China)
出处
《航天器工程》
CSCD
北大核心
2022年第3期1-8,共8页
Spacecraft Engineering
基金
国家民用空间基础设施中长期发展规划。
关键词
环境减灾二号A/B卫星
组网
大气校正
定标
灾害监测
HJ-2A/B satellites
networking
atmospheric correction
calibration
disaster monitoring
