Sisir Radar Raises $7 Mn To Launch SAR Satellite

Spacetech startup Sisir Radar has raised $7 Mn (INR 63.5 Cr) in a Series A round led by 360 ONE Asset, with participation from existing investor Shastra VC .

The startup plans to utilise the fresh capital to launch its L-band Synthetic Aperture Radar (SAR) satellite by 2026. The satellite will be designed and built in India and will provide high-resolution images catering to defence, intelligence, and commercial applications.

For context, SAR technology allows satellites to capture images regardless of weather or lighting conditions. Sisir Radar is focusing on L-band and P-band SAR, which can also see through vegetation and shallow ground layers .

Founded in 2022 by ex-ISRO Tapan Misra and ex-Summachar cofounders Soumya Misra and Urmi Bhambhani, Sisir Radar has developed cutting-edge SAR systems for air-borne and space-borne platforms operating in P/L/S/C/X satellite frequency bands.

Its L-band SAR can deliver 0.75 metre resolution, while its P-band SAR offers 2.5 metre resolution, which it says is significantly sharper than most global systems in these frequency bands .

Sisir Radar has won two iDEX challenges to build specialised SAR satellites for the Indian Air Force and is working with defence and industrial partners on surveillance and detection use cases.

With this round, the company plans to move from prototypes to full-scale orbital missions and expand its research and engineering teams.

Before this funding round, the startup had raised $1.5 Mn seed funding in February this year. 

The fundraise comes at a time when interest in the Indian spacetech ecosystem is steadily rising in line with the Indian startup’s move to deeptech innovations from consumer-first brands. As per Inc42’s Q3 funding report 2025, over one fifth of the investors are now pushing for a shift from consumer startups to deeptech innovation. 

Most recently, Bengaluru-based VC firm BYT Capital launched its maiden deeptech fund with a corpus of INR 180 Cr to back 18-20 startups with an average ticket size of INR 3-6 Cr. Besides, IIT Bombay’s startup incubator Society for Innovation and Entrepreneurship (SINE) also unveiled Y-Point Venture Capital Fund with a target corpus of INR 250 Cr to back deeptech startups.

IIT Madras has also unveiled INR 200 Cr IITM Alumni Fund to back early stage startups, particularly in the deeptech sector. Other VC firms such as 888VC, Riceberg Ventures and Chiratae Ventures have also launched funds focused on deeptech this year.

At the same time, government backing for spacetech startups has gathered momentum. The Indian National Space Promotion and Authorisation Centre (IN-SPACe) has rolled out a INR 500 Cr technology adoption fund to support startups in developing commercially viable spacetech products.

As part of the programme, the fund will finance up to 60% of project costs for startups and MSMEs, subject to a maximum cap of INR 25 Cr per project.

This follows the Union government’s announcement of an INR 1,000 Cr venture capital fund for spacetech startups in last year’s Union Budget, further improving access to capital for early- and growth-stage companies in the sector.

As per Inc42 estimates, the Indian spacetech ecosystem alone is projected to emerge as a $77 Bn market opportunity by 2030, driven by rising demand for satellite imagery, defence applications, climate monitoring and commercial space missions.