In-orbit application testing of 5 m Optical Satellite 02(ZY1-02E)
The 5 m Optical Satellite 02(ZY1-02E)was successfully launched on December 26,2021.Along with the previous model(ZY1-02D),an operational constellation of mid-resolution satellites will be established,forming a large-scale,quantitative,and comprehensive earth observation capability.This satellite was designed to provide 2.5 m panchromatic/10 m multispectral,30 m hyperspectral,and 16 m thermal infrared image data.The whole project was led by the Ministry of Natural Resources.It will support national monitoring and survey and mapping projects at the scale of 1:100000-1:250000.Compared with traditional multispectral data,hyperspectral data can obtain more abundant spectral information of ground objects,which is particularly important for fine-grained survey and monitoring tasks.The development of China's hyperspectral remote sensing technology is basically synchronized with the international frontier level.However,since the birth of hyperspectral remote sensing technology,the main way to obtain data has relied on human-operated aerial platforms,and for a long period of time,there has been no large-scale acquisition capacity from the data source.Therefore,the byperspectral payload carried by this satellite is its biggest highlight and has attracted widespread attention from domestic and foreign peers.During the in-orbit test,the Ministry of Natural Resources designed a total of 32 application test items,focusing on land resources,geology and minerals,surveying and mapping geographic information,ocean island monitoring,and other fields.All application items and other key indicators were evaluated in accordance with the relevant standards for natural resource survey and monitoring and technical specifications.The result shows that the satellite system,ground system,and application system have been operating stably and maintaining good consistency between each satellite of the constellation.It meets the data quality requirements of main businesses in various fields,including natural resource supervision and enforcement,geological and mineral resource investigation,ecological restoration project monitoring and evaluation,geospatial information update,coastline change monitoring,and steel industrial capacity monitoring.Hyperspectral and thermal infrared payloads have achieved good application results.This paper will introduce the data characteristics and application capabilities of the satellite,focusing on the evaluation results of some specific applications,especially with hyperspectral and thermal infrared cameras.Hopefully,this paper can provide a reference for the further application of this satellite.
remote sensing5 m Optical Satellite 02(ZY1-02E)natural resourcessatellite applicationvisible/near-infraredhyperspectralthermal infrared
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