India's remote sensing program was developed with the idea of applying space technologies for the benefit of humankind and the development of the country. The program involved the development of three principal capabilities. The first was to design, build and launch satellites to a Sun-synchronous orbit. The second was to establish and operate ground stations for spacecraft control, data transfer along with data processing and archival. The third was to use the data obtained for various applications on the ground.[1]
India demonstrated the ability of remote sensing for societal application by detecting coconut root-wilt disease from a helicopter mounted multispectral camera in 1970. This was followed by flying two experimental satellites, Bhaskara-1 in 1979 and Bhaskara-2 in 1981. These satellites carried optical and microwave payloads.[2]
India's remote sensing programme under the Indian Space Research Organization (ISRO) started off in 1988 with the IRS-1A, the first of the series of indigenous state-of-art operating remote sensing satellites, which was successfully launched into a polar Sun-synchronous orbit on March 17, 1988, from the Soviet Cosmodrome at Baikonur.
It has sensors like LISS-I which had a spatial resolution of 72.5 metres (238 ft) with a swath of 148 kilometres (92 mi) on ground. LISS-II had two separate imaging sensors, LISS-II A and LISS-II B, with spatial resolution of 36.25 metres (118.9 ft) each and mounted on the spacecraft in such a way to provide a composite swath of 146.98 kilometres (91.33 mi) on ground. These tools quickly enabled India to map, monitor and manage its natural resources at various spatial resolutions. The operational availability of data products to the user organisations further strengthened the relevance of remote sensing applications and management in the country.[3]
^Navalgund, R. R.; Kasturirangan, K. (1983-12-01). "The Indian remote sensing satellite: a programme overview". Proceedings of the Indian Academy of Sciences Section C: Engineering Sciences. 6 (4): 313–336. Bibcode:1983InES....6..313N. doi:10.1007/BF02881137. ISSN 0973-7677. S2CID 140649818.
^Comprehensive Remote Sensing. Elsevier. 2017-11-08. ISBN 978-0-12-803221-3. Archived from the original on 2022-05-18. Retrieved 2020-11-01.
^"The Saga of Indian Remote Sensing Satellite System - ISRO". www.isro.gov.in. Archived from the original on 2019-06-27. Retrieved 2019-12-27.
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