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Resourcesat-1 (also known as IRS-P6) is an advanced remote sensing satellite built by Indian Space Research Organization (ISRO). The tenth satellite of ISRO in IRS series, Resourcesat-1 is intended to not only continue the remote sensing data services provided by IRS-1C and IRS-1D, both of which have far outlived their designed mission lives, but also vastly enhance the data quality.

Resourcesat-1
NamesIRS-P6
ResourceSat-1
Mission typeEarth observation
OperatorISRO
COSPAR ID2003-046A
SATCAT no.28051
Websitehttps://www.isro.gov.in/
Mission duration5 years (planned)
18 years, 7 months and 26 days (in progress)
Spacecraft properties
SpacecraftIRS-P6
BusIRS-1A
ManufacturerIndian Space Research Organisation
Launch mass1,360 kg (3,000 lb)
Power1250 watts
Start of mission
Launch date17 October 2003, 04:54:00 UTC
RocketPolar Satellite Launch Vehicle, PSLV-C5
Launch siteSatish Dhawan Space Centre, First Launch Pad (FLP)
ContractorIndian Space Research Organisation
Entered serviceJanuary 2004
Orbital parameters
Reference systemGeocentric orbit[1]
RegimeSun-synchronous orbit
Perigee altitude813 km
Apogee altitude836 km
Inclination98.8°
Period101.4 minutes
Earth observation satellites series
 

Launch


The 1360 kg Resourcesat-1 was launched into an 817 km high polar Sun-synchronous orbit by the eighth flight of India's Polar Satellite Launch Vehicle (PSLV-C5).[2]


Instruments


Resourcesat-1 carries three cameras [3] similar to those of IRS-1C and IRS-1D but with vastly improved spatial resolutions - a high resolution Linear Imaging Self-Scanning Sensor-4 (LISS-4) operating in three spectral bands in the Visible and Near Infrared Region (VNIR) with 5.8 metre spatial resolution and steerable up to 26° across track to obtain stereoscopic imagery and achieve five-day revisit capability; a medium resolution Linear Imaging Self-Scanning Sensor-3 (LISS-3) operating in three spectral bands in VNIR and one in Short Wave Infrared (SWIR) band with 23.5 metre spatial resolution; and an Advanced Wide Field Sensor (AWiFS) operating in three spectral bands in VNIR and one band in SWIR with 56 metre spatial resolution.

Short Wave Infrared bands for LISS-3 [4]
Spectral BandWavelengthResolution
Band 10.52 - 0.59 μm23.5 m
Band 20.62 - 0.68 μm23.5 m
Band 30.77 - 0.86 μm23.5 m
Band 41.55 - 1.70 μm23.5 m
AWiFS Spectral Bands [4]
Spectral BandWavelengthResolution
Band 10.52 - 0.59 μm56 m
Band 20.62 - 0.68 μm56 m
Band 30.77 - 0.86 μm56 m
Band 41.55 - 1.70 μm56 m

Resourcesat-1 also carries a solid state recorder with a capacity of 120 Gigabits to store the images taken by its cameras which can be read out later to the ground stations.[5]


See also



References


  1. https://www.isro.gov.in/Spacecraft/irs-p6-resourcesat-1 - 14 May 2020
  2. "Overview of the Resourcesat-1 (IRS-P6)" (PDF). U.S. Geological Survey. p. 27. Retrieved 20 March 2013. This article incorporates text from this source, which is in the public domain.
  3. "IRS-P6 Resourcesat-1". European Space Agency. Retrieved 20 March 2013.
  4. NASA. "Sensor Compare" (PDF). Archived from the original (PDF) on 3 December 2013. Retrieved 9 August 2013. This article incorporates text from this source, which is in the public domain.
  5. "Encyclopedia Astronautica : IRS". astronautix.com. Archived from the original on 22 May 2013. Retrieved 20 March 2013.


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