高分多模卫星方案设计与技术特点

GFDM-1 Satellite System Design and Technical Characteristics

高分多模卫星是一颗敏捷光学成像卫星,具有全色优于0.5 m/多光谱优于2 m分辨率、1个全色谱段+8个多光谱谱段、无控制点定位精度优于10 m的能力,同时具有多种敏捷成像模式。文章概述了高分多模卫星的方案设计,并总结了卫星的敏捷成像、敏捷机动、图像质量保证、高定位精度保证、微振动抑制、大气同步校正、自主任务管理等技术特点。卫星的成功发射并投入使用,实现了民用光学遥感卫星优于0.5 m高分辨率图像数据的获取能力,可有效推动我国高分辨率对地观测系统建设和空间遥感的定量化应用水平。

GFDM-1 is an agile optical remote sensing satellite,which can provide image products with a nadir spatial resolution higher than 0.5m and 2m at panchromatic and multispectral channels,respectively.In addition,the positioning accuracy is better than 10m.Meanwhile,GFDM-1 satellite has a variety of agile imaging modes.The design of GFDM-1 satellite is briefly described and its technical characteristics such as agile imaging,agile mobility,positioning accuracy assurance and micro vibration suppression are thoroughly summarized.GFDM-1 satellite has been successfully launched and operationally used,and it realizes the capability of acquiring remote sensing images with a spatial resolution higher than 0.5m by China’s civil-use remote sensing satellite.It should effectively promote the construction of the high resolution earth observation system,and accelerate the quantitative application of the remote sensing images.