GEO Imaging Satellite explained

Geo Imaging Satellite
Bus:I-2K [1]
Manufacturer:
Applications:Earth observation
Country:India
Reference:Geocentric orbit
Orbits:Geostationary orbit
Operator:ISRO
Lifetime:7 years (planned)
Status:Planned
Launched:1
Operational:0
Failed:1
Lost:0
First:12 August 2021, 00:13 UTC[2] [3] [4]
Mass:2268 kg [5]
Launch Vehicle:GSLV F10
Power:2280 watts
Equipment:Ritchey-Chrétien telescope[6]
Multispectral array detectors
Steerable antenna
Rocket:GSLV F10

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 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]

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.[10]

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).[11] [12]

Payload

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 !Band!Channels!Ground Resolution(m)!Range(μm)
Multispectral (VNIR)6420.45 – 0.875
Hyperspectral (VNIR)1583180.375 – 1.0
Hyperspectral (SWIR)2561910.9 – 2.5

Launch schedule

DesignationCOSPAR IDNORAD IDPowerLaunchOrbital parametersRemarks
Launch date, Time (UTC)Launch massLaunch vehicleLaunch siteOrbitLongitude
EOS-03
(GISAT-1)		Failed to orbit[13] 2280 watts12 August 2021,
00:13 UTC		2268 kgGSLV-F10SDSCGTO85.5° East (planned)[14] [15] [16] [17] [18] [19] [20] [21] [22] [23]
EOS-05
(GISAT-2)		TBDTBD2280 watts2024 (planned)2268 kgGSLVSDSCGTO[24] [25] [26]

See also

Notes and References

  1. Web site: GSLV F10/GISAT-1 Brochure. 26 February 2020.
  2. News: Launch of India's new-age Earth imaging satellite by May 15: K. Sivan . 15 April 2021.
  3. News: ISRO revises launch schedule of GISAT-1 after "minor issue" with satellite. 26 March 2021.
  4. Web site: Chethan Kumar. April 9, 2021. Voltage issue further delays launch of Gisat-1 . 2021-04-09. The Times of India.
  5. Web site: Annual Report 2015-2016. Indian Space Research Organisation. 35. December 2015. dead. https://web.archive.org/web/20160705060034/http://www.isro.gov.in/sites/default/files/article-files/right-to-information/annual_report-15-16. 2016-07-05.
  6. Web site: Gisat 1, 2 (Eos 03, 05).
  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. Web site: Srivastava. Alok. 3 January 2016. User Interface Meet 2016: "New Indian eye in GEO". live. https://web.archive.org/web/20160830152056/http://nrsc.gov.in:80/sites/all/pdf/GISAT-UIM-3Jan2016_V3_Alok_2.pdf. 30 August 2016. 7 March 2021. nrsc.gov.in.
  9. Web site: Untitled Page.
  10. News: K . Chethan . Navy to acquire Gisat-2; Dedicated satellite to boost capability in IOR region India News - Times of India . 2022-05-07 . The Times of India . 7 May 2022 . en . The first one (Gisat-1) was for civilian use, but Gisat-2 is for strategic purposes and the navy has very specific requirements which they (Isro) need to meet,.
  11. Web site: March 2022 . 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) . live . https://web.archive.org/web/20220319073904/http://164.100.47.193/lsscommittee/Defence/17_Defence_27.pdf . 19 March 2022.
  12. Web site: Space research in India, January 2018 – June 2020 . https://web.archive.org/web/20210304090118/https://cosparhq.cnes.fr/assets/uploads/2021/02/India_2018-20-final_compressed.pdf . 4 March 2021 . GISAT Series: Geo Imaging Satellite is envisaged to provide high resolution imaging capability from geostationary orbit. It will consist of high-resolution imaging in VNIR (GISAT-1/-2) and LWIR (GISAT-2). There will be two hyperspectral imagers covering VNIR and SWIR regions. GISAT-1 payload was successfully delivered to the project..
  13. News: যান্ত্রিক ত্রুটি, পুরোপুরি সফল হল না উপগ্রহ 'GISAT-1'-এর উৎক্ষেপণ. 12 August 2021. Zee News. Zee News. 12 August 2021. Bengali.
  14. News: অতিমারির অন্ধকার ফুঁড়ে ফের উৎক্ষেপণে নামছে ইসরো, বৃহস্পতিবার কক্ষপথে যাবে জিস্যাট-১. 12 August 2021. Anandabazar. anandabazar.com. 10 August 2021. Kolkata. bn.
  15. News: भारत का सबसे ताकतवर टेलीस्कोप, अब PAK पर हर पल नजर. Aaj Tak. 2019-12-20. 2019-12-20. hi.
  16. News: દર 30 મીનિટે આકાશમાંથી ભારતને મળશે એક તસવીર, ઈસરો રચવા જઈ રહ્યું છે નવો ઇતિહાસ. GSTV. 2019-12-21. 2019-12-22. Gujarati.
  17. Web site: ఫిబ్రవరిలో జీఎస్‌ఎల్‌వీ ప్రయోగం. EENADU. eenadu.net. te. 2020-01-27.
  18. Web site: इसरो जाकर सैटेलाइट लांचिग देखेंगी रांची की मृदुला. jagran.com. hi. 2020-02-14.
  19. Web site: Status report on the current and future satellite systems by ISRO. 21 September 2019.
  20. Web site: GSLV Planned launch. VSSC. 22 December 2019.
  21. Web site: The launch of GISAT-1 onboard GSLV-F10, planned for 5 March 2020, is postponed. ISRO. isro.gov.in. 2020-03-04. 16 July 2021. https://web.archive.org/web/20210716011513/https://www.isro.gov.in/update/04-mar-2020/launch-of-gisat-1-onboard-gslv-f10-planned-march-05-2020-postponed. dead.
  22. Web site: ANNUAL REPORT 2020-2021. ISRO. 6 March 2021. 25 April 2021. https://web.archive.org/web/20210425173704/https://www.isro.gov.in/sites/default/files/anual_report_2020-2021_english.pdf. dead.
  23. News: PTI. 2021-07-10. ISRO plans to launch geo imaging satellite on August 12. The Hindu . 2021-07-10. 0971-751X.
  24. Web site: GSLV Project: Planned launches of GSLV. 2019-12-22.
  25. Web site: HAL hands over 50th set of L-40 stage of GSLV-MKII to ISRO. 2020-02-28 . zeenews.india.com. 2020-02-28.
  26. Web site: April 2023 . ISRO report on highlights and issues in dataset and product generation . GISAT-2 is scheduled for launch in March 2024..

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