Sisir Radar
Company typeSpace and Defence Startup

Sisir Radar[1] is an Indian space and defence startup founded by Tapan Misra (former Director of Space Applications Centre, ISRO and Physical Research Laboratory), Soumya Misra and Urmi Bhambhani. The startup develops a range of specialised radar products like Synthetic Aperture Radar (SAR) and Ground Penetrating Radar. Sisir Radar is a member of the Indian Space Association.[2]

The startup recently won the 2 iDEX Challenges organised by the Ministry of Defence, India, to develop SAR Satellite Payloads for the Indian Air Force.[3][4]

Sisir Radar CEO Soumya Misra receiving the iDEX Awards from Air Marshal Surat Singh of the IAF


The startup is named after physicist Sisir K. Mitra, who used radio waves to measure atmospheric heights in a manner similar to bistatic radars.[5]


Name Image Description
Russell Keith Raney
Dr. Russell Keith Raney created the first ever Digital SAR processor under the aegis of Canada’s MDA for NASA’s SEASAT SAR data (1978). He was the principal architect of Canada’s Radarsat-1 satellite. Additionally, he contributed to the design of Pioneer and Magellan, NASA’s Venus orbital radars.[6]
G. Madhavan Nair
As the ISRO Chairman, G. Madhavan Nair led the successful execution of the Chandrayaan-1 mission, India’s first lunar probe. He overlooked the development of the Geosynchronous Satellite Launch Vehicle (GSLV) as the Director of Vikram Sarabhai Space Centre (VSSC). The Government of India has bestowed upon him Padma Bhushan in 1998 and Padma Vibhushan in 2009.[6]
Alberto Moreira
Dr. Alberto Moreira is the Director of the Microwaves and Radar Institute at DLR (Gerrman Space Agency) and a full Professor with the Karlsruhe Institute of Technology, Germany, since 2001. With TanDEM-X, led by his Institute, a high-resolution, global digital elevation model (DEM) of the Earth was created with unprecedented accuracy.
Neelakantan Sivathanu Pillai
Neelakantan Sivathanu Pillai designed and developed the Cassegrain Antenna and high-power conical scanning feed system for the tracking radar for ISRO's first satellite launch vehicle SLV 3 mission. He was deputed to France under the ISRO CNES program in 1974 to work on the Spaceborne Synthetic Aperture Radar studies at Thomson CSF.


  1. ^ Leader, The Weekend. "Retired ISRO official promoted Sisir Radar to make SAR for drones, satellites". Retrieved 2023-12-13.
  2. ^ "Indian Space Association (ISpA)". Retrieved 2023-12-13.
  3. ^ "Space sector start-up Sisir Radar to develop SAR on L/P band SAR". The Times of India. 2023-10-19. ISSN 0971-8257. Retrieved 2023-12-13.
  4. ^ "Former Isro director's startup wins iDEX Challenge for developing SAR payload for satellites". The Times of India. 2023-10-20. ISSN 0971-8257. Retrieved 2023-12-13.
  5. ^ "Sisir Radar". Retrieved 2023-12-13.
  6. ^ a b "Sisir Radar". Retrieved 2024-01-09.