...Magnetic surveys are sometimes conducted by loading magnetometers onto aircraft. LANDSAT is an Earth observation satellite that applies remote sensing technology and can view a wider area and contribute to the prediction of geological structures and systems. It continuously views an area of 185 km x 185 km from space about 900 km above the ground, and transmits image data to a ground station. From [Remote Sensing]… On the other hand, resolution is crucial for satellites observing land areas, and precise observation of the earth's surface is required. NASA's LANDSAT project for land observation began with the launch of the first satellite in 1972. The sensor used, MSS, had four bands (0.4 to 1.1 μm divided into four sections) and a surface resolution of 80 m, and the images were so clear that it was hard to believe they were taken from an altitude of about 900 km. … *Some of the terminology that refers to "LANDSAT" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…航空機に磁力計を積みこんで磁力探査を行うこともある。さらに広い範囲を一望できて地質構造や地質系統の予察に貢献できるという点では,ランドサット(LANDSAT)をあげねばなるまい。ランドサットはリモートセンシングの技術を応用した地球観測衛星で,地上約900kmの宇宙から,連続的に185km×185kmの範囲を一望し,その画像データを地上局に送信する。… 【リモートセンシング】より… 一方,陸域観測用衛星では分解能が生命で,緻密(ちみつ)な地表観測が要求される。NASAによる陸域衛星であるランドサット(LANDSAT)計画は1972年の1号打上げにより開始された。用いられたセンサーMSSは4バンド(0.4~1.1μmを4分割),地表分解能80mで,その映像は約900kmの超高度からとは思えないほど鮮明であった。… ※「LANDSAT」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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