Spacetech startup Sisir Radar raises $1.5 Mn in seed round Spacetech startup Sisir Radar, which builds Synthetic Aperture Radar (SAR), has raised $1.5 million in its seed round led by Shastra VC. The round also saw participation by Riverwalk Holdings and INVSTT. The proceeds will be used to enable Sisir Radar to build stronger R&D and manufacturing capabilities and uniquely position it to launch the highest resolution L-band SAR Satellite by the end of 2026. Founded by Dr Tapan Misra, Sisir Radar provides SAR technology enabling defence, intelligence and commercial applications. It claims to be the first Indian company to build SAR imaging payloads across multiple bands including L, P and X bands. Sisir’s SAR technology enables 24x7 real-time monitoring of the Earth and can see through darkness, clouds, and dense foliage, enabling critical applications in defence, agriculture, mining, disaster response, maritime surveillance, and infrastructure monitoring. Besides being a technology partner to major defence companies in India for developing radar solutions, Sisir has also won 2 IDEX challenges to build a submetric L band and high resolution P band SAR satellite for the Indian Air Force.
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