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Landsat 9
Landsat 9 is a planned American Earth observation satellite, tentatively scheduled for launch in 2023. NASA will build, launch, and test it, and the United States Geological Survey (USGS) will process, archive, and distribute its data.〔(【引用サイトリンク】title=NASA, USGS Begin Work on Landsat 9 to Continue Land Imaging Legacy )〕 It's intended as the eighth satellite in the Landsat series, Landsat 6 having failed to reach orbit. ==Design== Landsat 9 "will largely replicate its predecessor Landsat 8", including reusing some designs and parts,〔(【引用サイトリンク】title=Multiple satellites planned in long-term Landsat program )〕 with optical and thermal sensors generally comparable to the OLI and TIRS instruments. As of its announcement in April 2015, there is no specific public information about imaging characteristics such as ground sample distance, signal-to-noise ratio, and spectral bands. The budget that provides for initial work on Landsat 9 also calls for research into less expensive and smaller components for future Landsat hardware.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Landsat 9」の詳細全文を読む
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