SISIR Radar secures $7M Series A from 360 One

West Bengal-based SISIR Radar has raised $7M in a Series A round led by 360 One, according to StartupTalky's Indian startup funding tracker for December 9-15, 2025.

SISIR Radar develops synthetic aperture radar (SAR) technology for Earth observation, building systems for spaceborne and airborne platforms. The startup is classified under the aerospace, maritime and defence tech sector, in the space tech category.

The funding tracker lists the round as a Series A, with 360 One named as lead investor. The company is headquartered in West Bengal, making it one of the few space tech startups from the state to appear in the tracker.

The round was recorded in the December 9-15 section of StartupTalky's weekly funding data, which also includes companies such as OneCard, Swiggy, iSprout, and Skydo. In the broader December tracker, SISIR Radar sits alongside other Indian space tech names, including EtherealX, which raised $21M in a Series A, and Digantara, which raised $50M in a Series B.

SISIR Radar's focus on SAR places it in a specialised corner of the space tech ecosystem. Synthetic aperture radar is used for all-weather, day-and-night imaging of the Earth, a capability that is relevant to defence and maritime monitoring. The company's listing under aerospace, maritime and defence tech reflects that positioning.

The $7M Series A adds to a growing flow of capital into Indian space technology startups tracked by StartupTalky. The investment adds SISIR Radar to the list of Indian space tech companies to raise capital in December.