Fill in the Blanks History of Remote SensingOnline version Check TASK 1. History of Remote Sensing. Fill in the missing information. by Ritva Ala-Louko 1 sensors monitoring low market distance resolution fully commercial deployed sample environmental multispectral ground 1 . In the 1950 ? s the USA and the Soviet Union developed imagery satellite systems that were in the 1960 ? s . 2 . In the early 1970 ? s the emergence of begun with the deployment of Landsat - 1 and Landsat - 2 . 3 . They both carried ( MSS ) that acquired images ( 80 - meter GSD ) of the Earth ? s surface . 4 . The acronym GSD refers to or spatial resolution or pixel size . 5 . Landsat - 1 and Landsat - 2 were used for large - scale civil applications such as and resource management .
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