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.
Manufacturer
Country of origin India
Operator ISRO
Applications Earth observation
Specifications
Bus I-2K [1]
Launch mass2268 kg [2] [3]
Power2280 watts [1]
Equipment Ritchey-Chrétien telescope [4]
Multispectral array detectors
Steerable antenna
Regime Geostationary orbit
Design life7 years (planned)
Dimensions
Production
StatusPlanned
Launched1
Operational0
Failed1
Lost0
Maiden launch12 August 2021, 00:13 UTC [5] [6] [7] [8]

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. [9] Two satellites will provide resolution in the range of 42 to 318 m. [1] [10] It will carry multi-spectral (Visible and Near-InfraRed, and Short Wave-InfraRed), multi-resolution (42 to 318 m) imaging instruments. [11]

Contents

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. [12]

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). [13] [12] [14]

Payload

The GISAT-1 in deployed configuration. 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. [1]

Features of GISAT-1 are:

Imaging capabilities of GISAT-1 [1]
BandChannelsGround Resolution(m)Range(μm)
Multispectral (VNIR)6420.45 – 0.875
Hyperspectral (VNIR)1583180.375 – 1.0
Hyperspectral (SWIR)2561910.9 – 2.5

Launch schedule

Designation COSPAR ID NORAD ID PowerLaunchOrbital parametersRemarks
Launch date, Time (UTC)Launch massLaunch vehicleLaunch siteOrbitLongitude
EOS-03
(GISAT-1)		Failed to orbit [15] 2280 watts 12 August 2021,
00:13 UTC 		2268 kg GSLV-F10 SDSC GTO 85.5° East (planned) [16] [17] [18] [19] [20] [21] [3] [22] [23] [8]
EOS-05
(GISAT-2)		TBDTBD2280 wattsMarch 2024 (planned)2268 kg GSLV SDSC GTO [24] [25] [23] [26]

See also

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References

  1. 1 2 3 4 5 "GSLV F10/GISAT-1 Brochure" . Retrieved 26 February 2020.[ permanent dead link ]
  2. ↑ "Annual Report 2015-2016". Indian Space Research Organisation. December 2015. p. 35. Archived from the original on 5 July 2016.
  3. 1 2 "GSLV Planned launch". VSSC. Retrieved 22 December 2019.[ permanent dead link ]
  4. ↑ "Gisat 1, 2 (Eos 03, 05)".
  5. ↑ "Launch of India's new-age Earth imaging satellite by May 15: K. Sivan" . Retrieved 15 April 2021.
  6. ↑ "ISRO revises launch schedule of GISAT-1 after "minor issue" with satellite" . Retrieved 26 March 2021.
  7. ↑ Chethan Kumar (9 April 2021). "Voltage issue further delays launch of Gisat-1". The Times of India. Retrieved 9 April 2021.
  8. 1 2 "ISRO plans to launch geo imaging satellite on August 12". The Hindu. PTI. 10 July 2021. ISSN   0971-751X . Retrieved 10 July 2021.
  9. ↑ https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/files/assets/common/downloads/Annual%20Report%202019-20%20 [ dead link ]
  10. ↑ Srivastava, Alok (3 January 2016). "User Interface Meet 2016: "New Indian eye in GEO"". nrsc.gov.in. Archived (PDF) from the original on 30 August 2016. Retrieved 7 March 2021.
  11. ↑ "Untitled Page".
  12. 1 2 K, Chethan (7 May 2022). "Navy to acquire Gisat-2; Dedicated satellite to boost capability in IOR region | India News - Times of India". The Times of India. Retrieved 7 May 2022. 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,
  13. ↑ "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)" (PDF). March 2022. Archived (PDF) from the original on 19 March 2022.
  14. ↑ "Space research in India, January 2018 – June 2020" (PDF). Archived from the original (PDF) on 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.
  15. ↑ "যান্ত্রিক ত্রুটি, পুরোপুরি সফল হল না উপগ্রহ 'GISAT-1'-এর উৎক্ষেপণ" (in Bengali). Zee News. Zee News. 12 August 2021. Retrieved 12 August 2021.
  16. ↑ "অতিমারির অন্ধকার ফুঁড়ে ফের উৎক্ষেপণে নামছে ইসরো, বৃহস্পতিবার কক্ষপথে যাবে জিস্যাট-১" (in Bengali). Kolkata: anandabazar.com. Anandabazar. 10 August 2021. Retrieved 12 August 2021.
  17. ↑ "भारत का सबसे ताकतवर टेलीस्कोप, अब PAK पर हर पल नजर" (in Hindi). Aaj Tak. 20 December 2019. Retrieved 20 December 2019.
  18. ↑ "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.
  19. ↑ "ఫిబ్రవరిలో జీఎస్‌ఎల్‌వీ ప్రయోగం". eenadu.net (in Telugu). EENADU. Retrieved 27 January 2020.
  20. ↑ "इसरो जाकर सैटेलाइट लांचिग देखेंगी रांची की मृदुला". jagran.com (in Hindi). Retrieved 14 February 2020.
  21. ↑ "Status report on the current and future satellite systems by ISRO" . Retrieved 21 September 2019.
  22. ↑ "The launch of GISAT-1 onboard GSLV-F10, planned for 5 March 2020, is postponed". isro.gov.in. ISRO. Archived from the original on 16 July 2021. Retrieved 4 March 2020.
  23. 1 2 "ANNUAL REPORT 2020-2021" (PDF). ISRO. Archived from the original (PDF) on 25 April 2021. Retrieved 6 March 2021.
  24. ↑ "GSLV Project: Planned launches of GSLV" . Retrieved 22 December 2019.[ permanent dead link ]
  25. ↑ "HAL hands over 50th set of L-40 stage of GSLV-MKII to ISRO". zeenews.india.com. 28 February 2020. Retrieved 28 February 2020.
  26. ↑ "ISRO report on highlights and issues in dataset and product generation". April 2023. GISAT-2 is scheduled for launch in March 2024.
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