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Radar imaging space fleet RISAT-2B

Radar imaging space fleet RISAT-2B

Indian Space Research Organization (ISRO) will launch radar imaging satellite RISAT -2B from Sriharikota on 22 May 2019.

RISAT-2B, short for "Radar Imaging Satellite-2B", is the second in a series of satellites used to observe weather conditions on Earth using radar imagery.

Once operational, the satellite will be capable of monitoring weather day and night, in all weather conditions.

RISAT-2B is to be followed by RISAT-2BR1, 2BR2, RISAT-1A, 1B, 2A and so on.

Radar Imaging Satellite Importance

When it is cloudy or dark, ‘regular’ remote-sensing or optical imaging satellites — which work like a light-dependent camera — cannot perceive hidden or surreptitious objects on the ground.

Satellites that are equipped with an active sensor, the synthetic aperture radar (SAR), can sense or ‘observe’ Earth in a special way from space day and night, rain or cloud.

This all-weather seeing feature is what makes them special for security forces and disaster relief agencies.

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