GEO Imaging Satellite

Geo Imaging Satellite or GISAT is an Indian imaging satellite class for geostationary orbit with a high temporal resolution, meant for providing near real time imaging with fast revisit capability and real time monitoring.[6] Two identical satellites will provide resolution in the range of 42 to 318 m.[1][7] It will carry multi-spectral (Visible and Near-InfraRed, and Short Wave-InfraRed), multi-resolution (42 to 318 m) imaging instruments.[8]

Geo Imaging Satellite
GISAT-1 before encapsulation
ManufacturerISRO Satellite Centre
Space Applications Centre
Country of originIndia
OperatorISRO
ApplicationsEarth observation
Specifications
BusI-2K [1]
Design life7 years
Launch mass2268 kg[2][3]
Power2280 watts [1]
EquipmentRitchey-Chrétien telescope[4]
Multispectral array detectors
Steerable antenna
RegimeGeostationary
Dimensions
Production
Status2020 (GISAT-1) (planned)
August 2020 (GISAT-2) (planned)
Launched0 (2 planned)
Maiden launchGISAT-1 (2020)[5] (planned)

Geo Imaging Satellite Gisat-1 onboard GSLV-F10 was planned to launch on March 5, 2020, but launch was deferred due to some technical reasons.[9][5][10][11]

Abilities
The GISAT-1 in deployed configuration.

GISATs will image in multi-spectral and hyper-spectral bands to provide near real-time pictures of large areas of the country, under cloud-free conditions, at frequent intervals which is, selected field image in every 5 minutes and entire Indian landmass image every 30 minutes at 42 m spatial resolution.[1]

Features of GISAT-1 are:

  • 700 mm Ritchey–Chrétien telescope based on the design of Cartosat 2A.
  • Array detectors in Visible and Near-InfraRed (VNIR), and Short Wave-InfraRed (SWIR) bands.
  • Electronically steerable, Phased Array Antenna.
  • High agility, jitter-free platform.
Imaging capabilities of GISAT-1 [1]
Band Channels Ground Resolution(m) Range(μm)
Multispectral (VNIR) 6 42 0.45 – 0.875
Hyperspectral (VNIR) 158 318 0.375 – 1.0
Hyperspectral (SWIR) 256 191 0.9 – 2.5

Launch schedule
Designation COSPAR ID NORAD ID Power Launch Orbital parameters Remarks
Launch date, Time (UTC) Launch mass Launch vehicle Launch site Orbit Perigee Apogee Longitude
GISAT-1 TBD TBD 2280 watts TBD 2268 kg GSLV-F10 SDSC GTO 170 35975 85.5°E (planned) [12][13][14][15][16][3][9]
GISAT-2 TBD TBD 2280 watts August 2020 (planned) 2268 kg GSLV-F12 SDSC GTO 170 35975 [17][18]
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See also

References
  1. "GSLV F10/GISAT-1 Brochure" (PDF). Retrieved 26 February 2020.
  2. "Annual Report 2015-2016" (PDF). Indian Space Research Organisation. December 2015. p. 35. Archived from the original (PDF) on 2016-07-05.
  3. "GSLV Planned launch" (PDF). VSSC. Retrieved 22 December 2019.
  4. https://space.skyrocket.de/doc_sdat/gisat-1.htm
  5. Diwakar, P. G. "Committee on Earth Observation Satellites 2020 plenary". Retrieved 28 November 2019.
  6. https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/files/assets/common/downloads/Annual%20Report%202019-20%20(English).pdf
  7. Srivastava, Alok (3 January 2016). "User Interface Meet 2016: "New Indian eye in GEO"" (PDF). NRSC. Archived from the original (PDF) on 3 January 2019. Retrieved 3 January 2019.
  8. http://pib.nic.in/newsite/mbErel.aspx?relid=94099
  9. "The launch of GISAT-1 onboard GSLV-F10, planned for March 05, 2020, is postponed - ISRO". www.isro.gov.in. Retrieved 2020-03-04.
  10. D.S., Madhumati. "ISRO readies for a busy 2019". The Hindu. Retrieved 3 January 2019.
  11. "After PSLV-C43 success, Isro centres set for GSLV launch on December 19". Retrieved 20 December 2018.
  12. "भारत का सबसे ताकतवर टेलीस्कोप, अब PAK पर हर पल नजर". Aaj Tak (in Hindi). 2019-12-20. Retrieved 2019-12-20.
  13. "દર 30 મીનિટે આકાશમાંથી ભારતને મળશે એક તસવીર, ઈસરો રચવા જઈ રહ્યું છે નવો ઇતિહાસ". GSTV (in Gujarati). 2019-12-21. Retrieved 2019-12-22.
  14. Eenadu. "ఫిబ్రవరిలో జీఎస్‌ఎల్‌వీ ప్రయోగం - EENADU". www.eenadu.net (in Telugu). Retrieved 2020-01-27.
  15. "इसरो जाकर सैटेलाइट लांचिग देखेंगी रांची की मृदुला". Dainik Jagran (in Hindi). Retrieved 2020-02-14.
  16. "Status report on the current and future satellite systems by ISRO". Retrieved 21 September 2019.
  17. "GSLV Project: Planned launches of GSLV" (PDF). Retrieved 2019-12-22.
  18. "HAL hands over 50th set of L-40 stage of GSLV-MKII to ISRO". Zee News. 2020-02-28. Retrieved 2020-02-28.
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