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Remote Sensing for Land & Resources    2018, Vol. 30 Issue (3) : 1-8     DOI: 10.6046/gtzyyg.2018.03.01
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Application of earth observation system of video satellite
Yiqin YUAN1,2, Guojin HE1,3(), Wei JIANG1,2, Guizhou WANG1,3
1. Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences, Beijing 100094, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Key Laboratory for Earth Observation of Hainan Province, Sanya 572000, China
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Abstract  

Remote sensing technology is developing rapidly at present,and human beings are entering a new era of earth observation characterized by high temporal resolution,high spectral resolution and high spatial resolution step by step. The appearance of video satellite brings a new favorable opportunity for real-time observation of remote sensing,which corresponds to the needs of future remote sensing real-time commercial development. This paper summarizes the development status and trend of video satellite both in China and abroad. Then the paper introduces the image-forming principle and characteristics of video satellite,and makes a comparison between the roll-broom imaging mode of video satellite and the push-broom imaging mode of traditional satellite. This paper proposes the application of future video satellite from four important aspects, i.e., business intelligence real-time monitoring,the whole process of natural disasters and dynamic monitoring,environment dynamic monitoring and military security.

Keywords earth observation      video satellite      temporal resolution      spatial resolution      satellite network     
:  TP79  
Corresponding Authors: Guojin HE     E-mail: hegj@radi.ac.cn
Issue Date: 10 September 2018
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Yiqin YUAN
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Guizhou WANG
Cite this article:   
Yiqin YUAN,Guojin HE,Wei JIANG, et al. Application of earth observation system of video satellite[J]. Remote Sensing for Land & Resources, 2018, 30(3): 1-8.
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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2018.03.01     OR     https://www.gtzyyg.com/EN/Y2018/V30/I3/1
卫星/平台 发射时间 国家或机构 视频颜色 视频分辨率/m 帧率/(帧/s) 成像区域/km2 视频长度/s
LAPAN-TUB SAT 2007.1 印度尼西亚 黑白 200 50 81×81 -
Sumbandliasat 2009.9 南非 黑白 - - - -
太阳动态观测卫星 (SDO) 2010.2 美国NASA 彩色 - - - 1 800
SkySat-1 2013.11 美国Skybox 黑白 1.1 30 2×1.1 90
UrtheCast 2014.1 加拿大 彩色 1.0 30 5×3.4 90
Surrey -V1C 2014.2 美国SSTUS 彩色 <1 100 1 800~3 600
SkySat-2 2014.7 美国Skybox 黑白 1.1 30 2×1.1 90
LAPAN-A2 2014.9 印度尼西亚国家
航空航天研究所
黑白 200 50 81×81 -
天拓二号 2014.9 中国国防科大 黑白 5 25 - 180
吉林一号 2015.10 中国长光卫星公司 彩色 1.13 25 4.6×3.4 90
Tab.1  Major Technical Parameters of video satellites[11]
项目名称 主要指标
轨道 太阳同步轨道,轨道高度为578 km(Skysat-1)和629 km(Skysat-2)
整星质量/kg 约83
尺寸 小于60 cm×60 cm×95 cm
数据
传输
天线口径/m φ2.4
星下点空间
分辨率/m
0.9(PAN),2(RGB+NIR)
幅宽/km 8
文件格式 16 bit(有效量化位数16bit)
视频
模式
谱段/nm 450~900(PAN)
空间分辨
率/m
1.1
视频覆盖
范围
2.0 km×1.1 km
持续时间/s 90
帧频/(帧/s) 30
帧尺寸 2 560×1 080像素
视频大小 1 920 ×1 080像素
文件格式 MPEG-4压缩(H.264)
视频属性 黑白,1080P全高清视频
Tab.2  Major Technical Parameters of Skysat[14]
项目名称 主要指标
国际空间站轨道 360 km
视频模式 空间分辨率/m 1.0
视频覆盖范围 5.0 km×3.4 km
持续时间/s 90
帧频/(帧/s) 3
帧尺寸 3 024×4 536像素
帧速率 3.25 fps
文件格式 MPEG-4压缩(H.264)
视频属性 彩色,1 080P全高清视频
Tab.3  Major Technical Parameters of Iris of Urthecast
项目名称 主要指标
轨道 近地太阳同步轨道,轨道高度为656 km
整星质量/kg 95
尺寸 小于60 cm×60 cm×95 cm
卫星转体/(度/秒) 3
侧摆角 -50°~50°
数据传输 天线口径/m φ2
视频模式 空间分辨率/m 1.13
视频覆盖范围 4.6 km×3.4 km
持续时间/s 90
帧频/(帧/s) 25
帧尺寸 2 160×3 840像素
视频大小 1 920×1 080像素
文件格式 MPEG-4压缩(H.264)
视频属性 贝尔彩色,4K超清视频
Tab.4  Major Technical Parameters of Jilin-1
Fig.1  Sketch map of Push-broom imaging mode
Fig.2  Target gaze imaging[6]
Fig.3  Vehicle extraction from SkySat-1video[19]
Fig.4  Extraction of car density from first frame of Skysat-1 video[19]
Fig.5  Infrared image of Williston in September 2013[23]
Fig.6  Mining map of Dingnan County rare earths mine
Fig.7  The ground blown up by missile in Yemen
Fig.8  Real-time monitoring of Dubai aircraft from SatSat-1
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