GEO Imaging Satellite

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Last edited September 2, 2023


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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.[1] Two satellites will provide resolution in the range of 42 to 318 m.[2][3] It will carry multi-spectral (Visible and Near-InfraRed, and Short Wave-InfraRed), multi-resolution (42 to 318 m) imaging instruments.[4]

The first satellite; EOS-3 (aka GISAT-1) was launched on 12 August 2021 but failed to reach orbit as cryogenic upper stage of GSLV could not ignite. EOS-3 was supposed to fulfil civilian applications.[5]

The second satellite, EOS-5 (aka GISAT-2) will be acquired by Indian Navy and will differ slightly in capabilities compared to EOS-03 (aka GISAT-1).[6][5][7]

Payload

File:I-2K based GISAT-1 spacecraft in deployed configuration..png
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.[2]

Features of GISAT-1 are:

Imaging capabilities of GISAT-1 [2]
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 Longitude
EOS-03
(GISAT-1) 		Failed to orbit[8] 2280 watts 12 August 2021,
00:13 UTC 		2268 kg GSLV-F10 SDSC GTO 85.5° East (planned) [9][10][11][12][13][14][15][16][17][18]
EOS-05
(GISAT-2) 		TBD TBD 2280 watts March 2024 (planned) 2268 kg GSLV-F14 SDSC GTO [19][20][17][21]

See also

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References

  1. ↑ https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/files/assets/common/downloads/Annual%20Report%202019-20%20 Template:Dead link
  2. ↑ 2.0 2.1 2.2 Cite error: Invalid <ref> tag; no text was provided for refs named GSLV_F10_LK
  3. ↑ User Interface Meet 2016: "New Indian eye in GEO", Srivastava, Alok. nrsc.gov.in(3 January 2016). Retrieved 7 March 2021.
  4. ↑ Untitled Page.
  5. ↑ 5.0 5.1 Navy to acquire Gisat-2; Dedicated satellite to boost capability in IOR region | India News - Times of India. The Times of India(7 May 2022). Retrieved 2022-05-07.
  6. ↑ Ministry of Defence, Demands for Grants (2022-23), Army, Navy, Air Force, Joint Staff, Military Engineer Services, Servicemen Contributory Health Scheme And Sainik Schools (Demand No. 20 and 21)(March 2022).
  7. ↑ Space research in India, January 2018 – June 2020.
  8. ↑ যান্ত্রিক ত্রুটি, পুরোপুরি সফল হল না উপগ্রহ 'GISAT-1'-এর উৎক্ষেপণ(12 August 2021). Retrieved 12 August 2021.
  9. ↑ অতিমারির অন্ধকার ফুঁড়ে ফের উৎক্ষেপণে নামছে ইসরো, বৃহস্পতিবার কক্ষপথে যাবে জিস্যাট-১(10 August 2021). Retrieved 12 August 2021.
  10. ↑ भारत का सबसे ताकतवर टेलीस्कोप, अब PAK पर हर पल नजर(2019-12-20). Retrieved 2019-12-20.
  11. ↑ દર 30 મીનિટે આકાશમાંથી ભારતને મળશે એક તસવીર, ઈસરો રચવા જઈ રહ્યું છે નવો ઇતિહાસ(2019-12-21). Retrieved 2019-12-22.
  12. ↑ ఫిబ్రవరిలో జీఎస్‌ఎల్‌వీ ప్రయోగం. eenadu.net. EENADU. Retrieved 2020-01-27.
  13. ↑ इसरो जाकर सैटेलाइट लांचिग देखेंगी रांची की मृदुला. jagran.com. Retrieved 2020-02-14.
  14. ↑ Status report on the current and future satellite systems by ISRO. Retrieved 21 September 2019.
  15. ↑ GSLV Planned launch. VSSC. Retrieved 22 December 2019.Template:Dead link
  16. ↑ The launch of GISAT-1 onboard GSLV-F10, planned for 5 March 2020, is postponed. isro.gov.in. ISRO. Retrieved 2020-03-04.
  17. ↑ 17.0 17.1 ANNUAL REPORT 2020-2021. ISRO. Retrieved 6 March 2021.
  18. ↑ ISRO plans to launch geo imaging satellite on August 12. The Hindu(2021-07-10). Retrieved 2021-07-10.
  19. ↑ GSLV Project: Planned launches of GSLV. Retrieved 2019-12-22.Template:Dead link
  20. ↑ HAL hands over 50th set of L-40 stage of GSLV-MKII to ISRO. zeenews.india.com(2020-02-28). Retrieved 2020-02-28.
  21. ↑ ISRO report on highlights and issues in dataset and product generation(April 2023).

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