Resourcesat-1
{{Short description|Indian Earth observation satellite}}
{{Use British English|date=May 2020}}
{{Use dmy dates|date=May 2020}}
{{Infobox spaceflight
| name = Resourcesat-1
| names_list = IRS-P6
ResourceSat-1
| image =
| image_caption =
| image_size = 300px
| mission_type = Earth observation
| operator = ISRO
| COSPAR_ID = 2003-046A
| SATCAT = 28051
| website = https://www.isro.gov.in/
| mission_duration = 5 years (planned)
{{time interval|17 October 2003|show=ymd}} (in progress)
| spacecraft = IRS-P6
| spacecraft_type =
| spacecraft_bus = IRS-1A
| manufacturer = Indian Space Research Organisation
| launch_mass = {{cvt|1360|kg}}
| dimensions =
| power = 1250 watts
| launch_date = 17 October 2003, 04:54:00 UTC
| launch_rocket = Polar Satellite Launch Vehicle, PSLV-C5
| launch_site = Satish Dhawan Space Centre, First Launch Pad (FLP)
| launch_contractor = Indian Space Research Organisation
| entered_service = January 2004
| disposal_type =
| deactivated =
| last_contact =
| orbit_reference = Geocentric orbithttps://www.isro.gov.in/Spacecraft/irs-p6-resourcesat-1 - 14 May 2020
| orbit_regime = Sun-synchronous orbit
| orbit_periapsis = 813 km
| orbit_apoapsis = 836 km
| orbit_inclination = 98.8°
| orbit_period = 101.4 minutes
| apsis = gee
| instruments_list = {{Infobox spaceflight/Instruments
| acronym1 = LISS-4: 5.8 metre multispectral
| name1 = Linear Imaging Self-Scanning Sensor-4
| acronym2 = LISS-3: 23.5 metre multispectral
| name2 = Linear Imaging Self-Scanning Sensor-3
| acronym3 = AWiFS: 56 metre multispectral
| name3 = Advanced Wide Field Sensor
}}
| programme = Earth observation satellites series
| previous_mission = Oceansat-1
| next_mission = Cartosat-1
}}
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.
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).{{cite web
|url=http://calval.cr.usgs.gov/documents/IRSP6.pdf|title=Overview of the Resourcesat-1 (IRS-P6)|page=27|publisher=U.S. Geological Survey|access-date=March 20, 2013}} {{PD-notice}}
Instruments
Resourcesat-1 carries three cameras {{cite web|url=https://gmesdata.esa.int/web/gsc/missions/irs-p6|title=IRS-P6 Resourcesat-1|publisher=European Space Agency|access-date=March 20, 2013}} 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.
| class="wikitable"
|+ align="bottom" style="caption-side: bottom" | Short Wave Infrared bands for LISS-3 {{cite web|last=NASA|title=Sensor Compare|url=http://landsat.gsfc.nasa.gov/wp-content/uploads/2012/12/sensor-compare.pdf|archive-url=https://web.archive.org/web/20131203005631/http://landsat.gsfc.nasa.gov/wp-content/uploads/2012/12/sensor-compare.pdf|url-status=dead|archive-date=3 December 2013|access-date=9 August 2013}} {{PD-notice}} | ||
| Spectral Band | Wavelength | Resolution |
|---|---|---|
| Band 1 | 0.52 - 0.59 μm | 23.5 m |
| Band 2 | 0.62 - 0.68 μm | 23.5 m |
| Band 3 | 0.77 - 0.86 μm | 23.5 m |
| Band 4 | 1.55 - 1.70 μm | 23.5 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.{{cite web
|url=http://www.astronautix.com/craft/irs.htm|title=Encyclopedia Astronautica : IRS|publisher=astronautix.com|access-date=March 20, 2013|url-status=dead|archive-url=https://web.archive.org/web/20130522192616/http://www.astronautix.com/craft/irs.htm|archive-date=May 22, 2013}}
See also
{{Portal|Spaceflight}}
References
{{Reflist|30em}}
{{IRS satellites}}
{{Indian spacecraft}}
{{Orbital launches in 2003}}
Category:Spacecraft launched in 2003