Oceansat

Short description: Indian class of oceanography satellites

Oceansat

Manufacturer| ISRO
Country of origin| India
Operator| ISRO
Applications| Oceanographic studies
Specifications
Bus| IRS
Launch mass| ~1,000 kg (2,200 lb)
Equipment| Ocean Colour Monitor
Pencil beam scatterometer
Microwave radiometer
Radio Occultation Sounder for Atmosphere
Regime| SSO
Dimensions
Production
Status| Operational
Launched| 3 (including 1 continuity support mission)
Operational| 2 (including 1 continuity support mission)
Retired| 1
Maiden launch| Oceansat-1 (1999)
Last launch| SCATSAT-1 (2016)

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]

## Contents

* 1 Satellites
* 1.1 Oceansat-1
* 1.2 Oceansat-2
* 1.2.1 SCATSAT-1
* 1.3 Oceansat-3
* 2 Launch schedule
* 3 See also
* 4 References

## Satellites

### Oceansat-1

Main page: Earth: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 1999.[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 page: Earth: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

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 October 2021, Oceansat-3 will provide continuity to operators of OCM and enhanced ability in other applications by way of simultaneous Sea Surface Temperature (SST) measurements.[12][13] As of March 2021, ISRO and CNES completed interface control document to accommodate Argos in Oceansat-3.[14]

## Launch schedule

Designation  | COSPAR ID  | NORAD ID | Power  | Launch date, Time (UTC)  | Launch mass  | Launch vehicle  | Launch site  | Status  | Remarks

|
|
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|
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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  |  |  | October 2021  | PSLV C53  | SDSC | Planned  |
Oceansat-3A  | TBD  | TBD  |  |  | TBD  | PSLV ??  | SDSC | Planned  |

## See also

* Indian Remote Sensing Programme
* Cartosat
* RISAT
* Indian Space Research Organisation

## References

1. ↑ 1.0 1.1 "IRS-P4 - Gunter's Space Page". Gunter's Space Page. http://space.skyrocket.de/doc_sdat/irs-p4.htm. Retrieved 2019-12-09.
2. ↑ "To predict cyclone, ISRO to build advanced satellite". The Indian Express. 2015-05-27. https://indianexpress.com/article/technology/science/isro-building-cyclone-predicting-mini-satellite-at-sac/. Retrieved 2019-12-09.
3. ↑ "Oceansat(IRS-P4)". Indian Space Research Organisation. 1999-05-26. https://www.isro.gov.in/Spacecraft/oceansatirs-p4. Retrieved 2019-12-09.
4. ↑ "PSLV-C2/IRS-P4". Indian Space Research Organisation. 1999-05-26. https://www.isro.gov.in/launcher/pslv-c2-irs-p4. Retrieved 2019-12-09.
5. ↑ Recent Advances In Environmental Science. Discovery Publishing House. 1 January 2003. p. 350. ISBN 978-81-7141-679-0.
6. ↑ 6.0 6.1 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. 2009-09-23. https://www.isro.gov.in/Spacecraft/oceansat-2. Retrieved 2019-12-09.
8. ↑ "Oceansat 2". Gunter's Space Page. https://space.skyrocket.de/doc_sdat/oceansat-2.htm. Retrieved 2019-12-09.
9. ↑ "PSLV-C14 / OCEANSAT-2". Indian Space Research Organisation. 2009-09-23. https://www.isro.gov.in/launcher/pslv-c14-oceansat-2. Retrieved 2019-12-09.
10. ↑ "PSLV-C35 / SCATSAT-1". Indian Space Research Organisation. 2016-09-26. https://www.isro.gov.in/launcher/pslv-c35-scatsat-1. Retrieved 2019-12-09.
11. ↑ "SCATSAT-1". Indian Space Research Organisation. 2016-09-26. https://www.isro.gov.in/Spacecraft/scatsat-1. Retrieved 2019-12-09.
12. ↑ "Oceansat 3, 3A". Gunter's Space Page. https://space.skyrocket.de/doc_sdat/oceansat-3.htm. Retrieved 2019-12-09.
13. ↑ "Isro aims for 7 more launches from India in 2021". Times of India. 12 March 2021. https://timesofindia.indiatimes.com/india/isro-aims-for-7-more-launches-from-india-in-2021/articleshow/81455856.cms.
14. ↑ "India, France Working On 3rd Joint Space Mission, Says ISRO Chairman". 20 March 2021. https://www.ndtv.com/india-news/india-france-working-on-3rd-joint-space-mission-says-isro-chairman-k-sivan-2395047.

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