摘要
针对微纳卫星对地观测系统发展水平较高的美国、英国、日本、阿根廷、芬兰等国的典型微纳卫星对地观测系统,从系统的发展目标、系统构成、发展历程、目前状况,以及系统(卫星)的主要性能和技术状态等方面进行了较为全面的论述。从中可看出,微纳卫星可获取亚米级分辨率的光学和合成孔径雷达图像,使微纳卫星的技术水平大幅提高;对地观测系统微纳卫星的数量从数颗、几十颗到数百颗,组网卫星的数量多,能够高频次地获取所观测目标的信息。经比较、分析与归纳,微纳卫星对地观测系统呈现出中分辨率与高分辨率协调发展,主动观测方式与被动观测方式全面发展,军民融合式发展,以及微纳卫星对地观测系统之间的竞争更加激烈等发展趋势。
This article comprehensively discusses the objective, system composition, history, state of the art, performances and technical conditions of earth observation systems of typical micro-nano satellites in the United States of America,United Kingdom, Japan, Argentina and Finland. As can be seen, micro-nano satellites can obtain sub-meter resolution optical and SAR images and the development of micro-nano satellite technology grows rapidly. The number of micro-nano satellites in earth observation systems ranges from several and tens to hundreds, which enables obtaining high-frequency observation images of the area of interest. Based on comparison, analysis and summarization, the development trends of micro-nano satellites in earth observation can be concluded as: harmonious development between medium resolution and high resolution systems, comprehensive development between passive and active earth observation systems, syncretic development between civil-and military-use of the earth observation systems. The competition between the earth observation systems is becoming more intense.
作者
李健全
王倩莹
张思晛
赵志伟
LI Jianquan;WANG Qianying;ZHANG Sixian;ZHAO Zhiwei(China Academy of Space Technology,Beijing 100094,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;Space Star Technology Co.,Ltd.,Beijing 100095,China)
出处
《航天器工程》
CSCD
北大核心
2020年第4期126-132,共7页
Spacecraft Engineering
关键词
对地观测
微纳卫星
高分辨率
earth observation
micro-nano satellites
high resolution
