IRS-1 is India's dedicated Earth resources satellite system operated by ISRO and the National Remote Sensing Agency (NRSA). The primary objective of the IRS missions is to provide India's National Natural Resources Management System (NNRMS) with remote sensing data.

Sensors

• LISS (Linear Imaging Self Scanning Sensor): Multispectral 4-channel sensors.
• PAN: Single channel (panchromatic) imager producing better than 10 m ground resolution.
• WIFS: Wide Field Sensor

IRS-1C LISS and PAN Sensor Characteristics

Sensor	Band	Wavelength (µm)	Resolution (m)	Swath Width (km)
LISS	1	0.52 - 0.59 (Green)	23.5	142
LISS	2	0.62 - 0.68 (Red)	23.5	142
LISS	3	0.77 - 0.86 (Near IR)	23.5	142
LISS	4	1.55 - 1.75 (SWIR)	70	142
PAN		0.5 - 0.90	<10	70.5

WiFS

bands	Wavelength (µm)	Resolution (m)	Swath Width (km)
Red	0.62-0.68	189	774
Near IR	0.77-0.86	189	774

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