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FAQ:
Geostationary:
Polar orbiting:

Insat

Satellite coverage

Operator: India

Launch date: 07/2013 (INSAT-3D), 09/2016 (INSAT-3DR)

Type of orbit: Geostationary

Position: 82°E (INSAT-3D), 74°E (INSAT-3DR)

Instrument: IMAGER

IMAGER is a 6-channel device. In the visible and near infrared channels, the resolution is 1 km. In infrared channels, the resolution is 4 km. In the water vapour channel, the resolution is 8 km. The imaging frequency is 30 minutes with limited areas in shorter time intervals.

The radiometer scans the earth's surface line by line; each line consists of a series of individual image elements or pixels. For each pixel the radiometer measures the radiative energy of the different spectral bands. This measurement is digitally coded and transmitted to the ground station for pre-processing before being disseminated to the user community.

INSAT-3DR

FAQ:
Geostationary:
Polar orbiting: