Constelli Signs iDEX Spark Grant To Build Drone-Based Signals Intelligence For High-Altitude Terrain

Constelli is building a drone that listens for enemy signals in the mountains. The Hyderabad-based defence technology startup, founded in 2017 by Satya Gopal Panigrahi and Avinash Chenreddy, has signed an iDEX Spark Grant Agreement with the Defence Innovation Organisation to develop a drone-based electronic support measures system for signals intelligence in hilly and high-altitude terrain. The Indian Air Force’s Maintenance Command is the intended beneficiary.

The grant funds prototype development in stages and does not, by itself, mean a finished product or a production order. Constelli raised $20 million in a General Catalyst-led round in February 2026 and works with organisations including DRDO, the Indian Air Force, HAL and BEL.

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