GEO Imaging Satellite

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Geo Imaging Satellite
GISAT-1 spacecraft in the cleanroom before encapsulation.jpg
GISAT-1 spacecraft in the cleanroom before encapsulation.
ManufacturerISRO Satellite Centre
Space Applications Centre
Country of originIndia
OperatorISRO
ApplicationsEarth observation
Specifications
BusI-2K [1]
Design life7 years (planned)
Launch mass2268 kg [3][4]
Power2280 watts [1]
EquipmentRitchey-Chrétien telescope [2]
Multispectral array detectors
Steerable antenna
RegimeGeostationary orbit
Dimensions
Production
StatusGISAT-1: January 2021 (planned)
GISAT-2: 2021 (planned)
Launched0 (2 planned)
Maiden launchGISAT-1: January 2021 (planned) [5] [6]

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.[7] Two identical satellites will provide resolution in the range of 42 to 318 m.[1][8] It will carry multi-spectral (Visible and Near-InfraRed, and Short Wave-InfraRed), multi-resolution (42 to 318 m) imaging instruments.[9]

Geo Imaging Satellite GISAT-1 onboard GSLV-F10 was planned to launch on 5 March 2020, but launch was deferred due to some technical reasons.[10][6][11][12]

Imaging capabilities[edit]

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:

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[edit]

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 January 2021 [13] 2268 kg GSLV-F10 SDSC GTO 170 35975 85.5° E (planned) [14][15][16][17][18][4][10]
GISAT-2 TBD TBD 2280 watts 2021 (planned) 2268 kg GSLV-F12 SDSC GTO 170 35975 [19][20]

See also[edit]

References[edit]

  1. ^ a b c d e "GSLV F10/GISAT-1 Brochure". Retrieved 26 February 2020.
  2. ^ https://space.skyrocket.de/doc_sdat/gisat-1.htm
  3. ^ "Annual Report 2015-2016". Indian Space Research Organisation. December 2015. p. 35. Archived from the original on 5 July 2016.
  4. ^ a b "GSLV Planned launch". VSSC. Retrieved 22 December 2019.
  5. ^ "SDSC-SHAR Website". Archived from the original on 1 January 2021. Retrieved 1 January 2021.
  6. ^ a b Diwakar, P. G. "Committee on Earth Observation Satellites 2020 plenary". Retrieved 28 November 2019.
  7. ^ https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/files/assets/common/downloads/Annual%20Report%202019-20%20
  8. ^ Srivastava, Alok (3 January 2016). "User Interface Meet 2016: "New Indian eye in GEO"". nrsc.gov.in. Archived from the original on 3 January 2019. Retrieved 3 January 2019.
  9. ^ http://pib.nic.in/newsite/mbErel.aspx?relid=94099
  10. ^ a b "The launch of GISAT-1 onboard GSLV-F10, planned for March 5, 2020, is postponed". isro.gov.in. ISRO. Retrieved 4 March 2020.
  11. ^ D.S., Madhumati. "ISRO readies for a busy 2019". The Hindu. Retrieved 3 January 2019.
  12. ^ "After PSLV-C43 success, Isro centres set for GSLV launch on December 19". Retrieved 20 December 2018.
  13. ^ "డిసెంబర్‌ లోపు పీఎస్‌ఎల్‌వీ సీ49 ప్రయోగం". sakshi.com (in Telugu). 9 September 2020. Retrieved 9 September 2020.
  14. ^ "भारत का सबसे ताकतवर टेलीस्कोप, अब PAK पर हर पल नजर" (in Hindi). Aaj Tak. 20 December 2019. Retrieved 20 December 2019.
  15. ^ "દર 30 મીનિટે આકાશમાંથી ભારતને મળશે એક તસવીર, ઈસરો રચવા જઈ રહ્યું છે નવો ઇતિહાસ" (in Gujarati). GSTV. 21 December 2019. Retrieved 22 December 2019.
  16. ^ "ఫిబ్రవరిలో జీఎస్‌ఎల్‌వీ ప్రయోగం". eenadu.net (in Telugu). EENADU. Retrieved 27 January 2020.
  17. ^ "इसरो जाकर सैटेलाइट लांचिग देखेंगी रांची की मृदुला". jagran.com (in Hindi). Retrieved 14 February 2020.
  18. ^ "Status report on the current and future satellite systems by ISRO". Retrieved 21 September 2019.
  19. ^ "GSLV Project: Planned launches of GSLV". Retrieved 22 December 2019.
  20. ^ "HAL hands over 50th set of L-40 stage of GSLV-MKII to ISRO". zeenews.india.com. 28 February 2020. Retrieved 28 February 2020.