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TRISHNA
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 | |
| Mission type | Weather |
|---|---|
| Operator | ISRO/CNES |
| Website | https://www.isro.gov.in/TRISHNA_Mission.html |
| Mission duration | ~ 5 years with possible 2 year extension [1] |
| Spacecraft properties | |
| Bus | IMS-1K |
| Manufacturer | ISRO |
| Expedition | |
| Began | UTC |
| Start of mission | |
| Launch date | October 2027 [2] |
| Rocket | Polar Satellite Launch Vehicle |
| Launch site | Satish Dhawan Space Centre |
| Orbital parameters | |
| Regime | Polar sun-synchronous |
| Eccentricity | 0 |
| Altitude | 761 km |
| Inclination | ~90° |
| Repeat interval | 8 days |
| Instruments | |
| VSWIR (Atmosphere, Land, Snow & Ice) TIR (Land & Ocean) | |
TRISHNA or (Thermal infraRed Imaging Satellite for High-resolution Natural resource Assessment)[3][4] is a planned cooperative joint satellite mission between the Indian Space Research Organisation (ISRO) of India and Centre national d'études spatiales (CNES) of France.Its orbit will provide a spatial resolution of 57 meters for land and coastal areas and 1 km for oceanic and polar regions. The mission is designed for a 5-year operational life.[5]
History
[edit]The Mission was announced during bilateral talks between India and France in July 2023.[6][7] On 19 March 2024, TRISHNA received approval from both space agencies and a project team has been formed to finish developing the mission concept.[4][3] It is currently planned for a launch in October 2027, aboard a PSLV rocket from Satish Dhawan Space Centre.[8] This marks the next collaboration in space between India and France following the Megha-Tropiques and SARAL satellites.
By 2026, The Preliminary Design Review for the bus elements and the VNIR and SWIR payloads were completed.[9]
Instruments
[edit]Trishna aims to have a resolution of approximately 57 metres and a re-visit interval of about three days.[3][4] It would have two instruments, namely Visible and Near Infrared (VNIR)/Short Wave InfraRed (SWIR) sensor (VSWIR) that wil be built by ISRO and Thermal InfraRed instrument (TIR) built by CNES.[10][5] CNES will deliver TIR to ISRO in 2026.[11]
Objectives
[edit]Scientific objectives are:
- ecosystem stress and water use (management of water resources).
- coastal and inland waters (water quality, fish resources, ice).
- urban microclimates monitoring (characterization of urban heat island).
- solid earth (thermal anomaly detection).
- cryosphere (snow and ice monitoring).
- atmosphere (water content, cloud characterization).[10]
See also
[edit]References
[edit]- ^ "International Science Workshop on High-Resolution Thermal Earth Observation" (PDF). Archived from the original (PDF) on 30 July 2024.
- ^ "TRISHNA Satellite Mission Summary".
- ^ a b c "Nisar only in 2nd half of 2024; Trishna gets nod". The Times of India. 19 March 2024. ISSN 0971-8257. Retrieved 23 March 2024.
- ^ a b c "NASA-ISRO SAR (NISAR) Unlikely To Launch Before The End Of May, TRISHNA Gets Space Commission's Nod: Report". TimesNow. 19 March 2024. Retrieved 23 March 2024.
- ^ a b "TRISHNA Mission: Advancing High-Resolution Thermal Imaging for Climate and Resource Management". www.isro.gov.in. Retrieved 22 September 2025.
- ^ "India, France agree on setting up strategic dialogue on space issues, work on Trishna satellite". The Times of India. ISSN 0971-8257. Retrieved 23 March 2024.
- ^ Team, ANI (14 July 2013). "PM Modi calls to enhance India-France cooperation in Space-based Maritime Domain". ANI news. Retrieved 23 March 2024.
- ^ "TRISHNA Satellite Mission Summary | CEOS Database". database.eohandbook.com. Retrieved 1 September 2026.
- ^ Annual_Report_2025_26_Eng_29042026_Rev.pdf
- ^ a b "TRISHNA (Thermal infraRed Imaging Satellite for High-resolution Natural resource Assessment) - eoPortal". www.eoportal.org. Retrieved 23 March 2024.
- ^ "TRISHNA". CNES. Retrieved 1 September 2026.