Английская Википедия:GEO Imaging Satellite
Шаблон:Short description Шаблон:Use Indian English Шаблон:Use dmy dates Шаблон:Infobox spacecraft class
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
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:
- 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
| 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 | SDSC | GTO | [19][20][17][21] | |
See also
References
- ↑ https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/files/assets/common/downloads/Annual%20Report%202019-20%20 Шаблон:Dead link
- ↑ 2,0 2,1 2,2 Ошибка цитирования Неверный тег
<ref>; для сносокGSLV_F10_LKне указан текст - ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ 5,0 5,1 Шаблон:Cite news
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite webШаблон:Dead link
- ↑ Шаблон:Cite web
- ↑ 17,0 17,1 Шаблон:Cite web
- ↑ Шаблон:Cite news
- ↑ Шаблон:Cite webШаблон:Dead link
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite web
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