Resourcesat-1 (IRS-P6) Satellite Data

Image of satellite in space

Image of Satellite in Space
© Geoscience Australia

Introduction

Geoscience Australia's objectives with the Resourcesat-1 (IRS-P6 mission) was to provide continued remote sensing data services on an operational basis for integrated land and water resources management. No longer available from Geoscience Australia.

Historical information

IRS-P6 is the continuation of the IRS-1C/1D missions. The launch of the satellite took place October 17, 2003. Resourcesat-1 is also known as IRS-P6. IRS-P6 is an Earth observation mission within the Indian Remote-Sensing (IRS) series of satellites operated by the Indian Space Research Organisation (ISRO), Bangalore, India.

Australian Centre for Remote Sensing (ACRES) commenced acquisition of Resourcesat-1 Linear Imaging and Self Scanning sensor (LISS-III) and Advanced Wide Field Sensor (AWiFS) data in February 2008.

The data will be routinely recorded over Australia, although not every pass will be acquired and archived.

Archive data over Australia will be available to Australian and New Zealand residents only. For more information on the availability of Resourcesat-1 data contact Earth Observation Client Services.

Sensor characteristics

Resourcesat-1 (IRS-P6)
The satellite has three sensors on-board:

  • a LISS-III sensor
  • AWiFS sensor and a high resolution multi-spectral Linear Imaging Self-Scanning Sensor-4 (LISS-IV)
  • an On-Board Solid State Recorder (OBSSR).
All sensors work on the 'pushbroom scanning' concept using linear arrays of Charge Coupled Devices (CCDs). In this mode of operation, each line of image is electronically scanned and contiguous lines are imaged by the forward motion of the satellite. Below image for Nadir viewing only.
Graphic instrument with swath width

Graphic instrument with swath
width

© Geoscience Australia

Only LISS-III and AWiFS data are acquired and distributed by Geoscience Australia.

The LISS-III and AWiFS sensors operate in four spectral bands, three in the visible and near infrared and one in the SWIR (1.55 to 1.7 microns) region.

The LISS-III sensor has radiometric quantisation of 7 bits and provides a combined swath of 141 kilometres with a spatial resolution of 23.5 metres.

The AWiFS sensor has radiometric quantisation of 10 bits and provides a combined swath of 740 kilometres with a spatial resolution of 56 metres at nadir.

All sensors have the feature of on-board detector calibration using LEDs. The sensors can be operated either in Real Time mode by direct transmission to ground station or in Record and Playback mode using an on-board 120 GB capacity Solid State Recorder.

IRS-P6 radiometric characteristics (micron)

Spectral bands

LISS-III and AWiFS

Band 2 (Green)

0.52 - 0.59

Band 3 (Red)

0.62 - 0.68

Band 4 (NIR)

0.77 - 0.86

Band 5 (SWIR)

1.55 - 1.70

Other satellite and image characteristics

Property

LISS-III

AWiFS

Spatial resolution

23.5 metres

56 metres at nadir, 70 metres at field edge

Swath width

141 kilometres

740 kilometres

Repeat coverage interval

24 days

5 days

Radiometric Quantisation

7 bits

10 bits

Altitude

817 kilometres

On-board data storage

120 Gb (solid state). 9 minutes storage each for LISS-III and AWiFS

Orbit type

Circular Polar Sun Synchronous

Inclination

98.7 degrees

Equatorial Crossing

Descending node: 10:30 am

How to get Resourcesat-1 (IRS-P6) imagery data

Topic contact: earth.observation@ga.gov.au Last updated: March 8, 2012