An imaging satellite needs daylight and a clear sky.
Cloud, darkness or a vessel that simply moves between passes will defeat it.
Radio frequency sensing works differently: it detects the signals a ship, an aircraft or their radar emits, which travel regardless of weather or light, and reveal something a photograph cannot, namely what a piece of equipment is doing.
was founded in 2019 by Ankit Bhateja and Raghav Sharma, and works out of Bengaluru.
Its stated aim is a constellation of radio frequency nanosatellites, small spacecraft that capture and interpret signals rather than images.
