Oceansat

Oceansat is a series of earth observation satellites built, launched, and operated by Indian Space Research Organisation, and dedicated to oceanography and atmospheric studies. Oceansat satellites facilitate a range of applications including documenting chlorophyll concentration, phytoplankton blooms, atmospheric aerosols and particulate matter.[1] as well as marine weather forecast to predict cyclones.[2]

Oceansat
ManufacturerISRO
Country of originIndia
OperatorISRO
ApplicationsOceanographic studies
Specifications
BusIRS
Launch mass~1,000 kg (2,200 lb)
EquipmentOcean Colour Monitor
Pencil beam scatterometer
Microwave radiometer
Radio Occultation Sounder for Atmosphere
RegimeSSO
Dimensions
Production
StatusOperational
Launched3 (including 1 continuity support mission)
Operational2 (including 1 continuity support mission)
Retired1
Maiden launchOceansat-1 (1999)
Last launchSCATSAT-1 (2016)

Satellites

Oceansat-1
Main article: Oceansat-1

OceanSat-1 was the first Indian satellite built specifically for oceanographic applications. The satellite carried an Ocean Colour Monitor (OCM) and a multi-frequency scanning microwave radiometer.[3] Oceansat-1 was launched on board a PSLV rocket on 26 May 2019.[4]

It was capable of detecting eight spectrums ranging from 400 nm to 885 nm, all in the visible or near infrared spectrums.[5] The second, the Multi-frequency Scanning Microwave Radiometer, collects data by measuring microwave radiation passing through the atmosphere over the ocean.[6] This offers information including sea surface temperature, wind speed, cloud water content, and water vapour content.[1][6]

Although initially launched with a lifespan of 5 years, Oceansat-1 completed its mission on August 8, 2010 after serving for 11 years and 2 months.

Oceansat-2
Main article: Oceansat-2

Oceansat-2 is designed to provide service continuity for operational users of the Ocean Colour Monitor (OCM) instrument on Oceansat-1 and enhance the potential of applications in other areas.[7]

A swath width of 1420 km is provided. An along-track instrument tilt capability of ±20º is provided to avoid sun glint.[8]

Satellite was launched aboard a PSLV-CA on 23 September 2009.[9]

SCATSAT-1
Main article: SCATSAT-1

SCATSAT-1 was launched in 2016[10] after SCAT (Scanning scatterometer) on Oceansat-2 became dysfunctional after its life span of four-and-a-half years. SCATSAT carries a Ku-band scatterometer similar to the one on Oceansat-2.[11]

Oceansat-3

Expected to be launched in 2020, Oceansat-3 will provide continuity to operators of OCM and enchanced ability in other applications by way of simultaneous Sea Surface Temperature (SST) measurements.[12]

Launch schedule
Designation COSPAR ID NORAD ID Power Launch date, Time (UTC) Launch mass Launch vehicle Launch site Status Remarks
Oceansat-1/IRS-P4 1999-029C 25758 750 W 26 May 1999, 06:22:00 1,036 kg (2,284 lb) PSLV-G C2 FLP, SDSC Retired Completed a life a span more than double of planned.
Oceansat-2 2009-051A 35931 23 September 2009, 06:21 960 kg (2,120 lb) PSLV-CA C14 SLP, SDSC Operational Tilt ability up to 20 degrees
SCATSAT-1 2016-059H 41790 26 September 2016, 03:42 371 kg (818 lb) PSLV-G C35 FLP, SDSC Operational Continuity mission after SCAT on Oceansat-2 got dysfunctional
Oceansat-3 TBD TBD 2020 PSLV ?? SDSC Planned
Oceansat-3A TBD TBD TBD PSLV ?? SDSC Planned

See also

References
  1. "IRS-P4 - Gunter's Space Page". Gunter's Space Page. Retrieved December 9, 2019.
  2. "To predict cyclone, ISRO to build advanced satellite". The Indian Express. May 27, 2015. Retrieved December 9, 2019.
  3. "Oceansat(IRS-P4)". Indian Space Research Organisation. May 26, 1999. Retrieved December 9, 2019.
  4. "PSLV-C2/IRS-P4". Indian Space Research Organisation. May 26, 1999. Retrieved December 9, 2019.
  5. Recent Advances In Environmental Science. Discovery Publishing House. January 1, 2003. p. 350. ISBN 978-81-7141-679-0.
  6. Sastry, Hari Ram Subrahmanya; Ebenezer, D. D.; Sundaram, T. V. S. (2002). Proceedings of theInternational conference on SonarSensors of Systems, Vol. 2. Allied Publishers. p. 635. ISBN 978-81-7764-382-4.
  7. "Oceansat-2)". Indian Space Research Organisation. September 23, 2009. Retrieved December 9, 2019.
  8. "Oceansat 2". Gunter's Space Page. Retrieved December 9, 2019.
  9. "PSLV-C14 / OCEANSAT-2". Indian Space Research Organisation. September 23, 2009. Retrieved December 9, 2019.
  10. "PSLV-C35 / SCATSAT-1". Indian Space Research Organisation. September 26, 2016. Retrieved December 9, 2019.
  11. "SCATSAT-1". Indian Space Research Organisation. September 26, 2016. Retrieved December 9, 2019.
  12. "Oceansat 3, 3A". Gunter's Space Page. Retrieved December 9, 2019.
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