IRS-1

## IRS-1 (Indian Remote Sensing Satellite), India

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.

## IRS-1C Orbit

:

Type | Sun-Synchronous
Altitude | 817 km
Inclination | 98.69 deg
Period | 101 min
Repeat Cycle | 24 days

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) | 23.5 | 142
PAN |  | 0.5 - 0.90 | <10 | 70.5

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