BRO constellation (Gen 1)
Satellites that find ships by their radio signals
Unseenlabs
French company whose satellites pick up radio signals from ships and pinpoint where they are, which helps coast guards and navies find vessels that have switched off their location beacons.
The February 2024 release does not name the series in its headline, but Bpifrance's quote in it calls the round a Series C. The 2021 Series B article does not list its investors in the visible text, so none are recorded.
Products, by altitude
Low Earth orbit · 160–2,000 km
In service In service ![]()
BRO Gen 2
Larger satellites tracking radio signals on land, sea and space
Known rounds
Milestones
- Oct 2026 BRO-23 (Gen 1) and BRO-32 (Gen 2) launched together on SpaceX's Transporter-18 rideshare from Vandenberg. Company statement3
- Sep 2026 France's defense procurement agency (DGA) awarded the CASSIOPÉE contract to renew France's space-based signals intelligence capability, with Airbus Defence and Space as lead contractor and Unseenlabs as co-contractor. Company statement4