ACSL’s no-GPS compatible drones are capable of inspecting tunnels and bridges.

After the unfortunate Sasako tunnel collapse in 2012, many technologies have been considered for easy and fast inspections of tunnels.

GPS data cannot be received inside a tunnel or under the bridge, hence common GPS drones cannot fly autonomously. ACSL continuously develops and provides a solution using SLAM (simultaneous localization and mapping) technologies to enable autonomous flight under no-GPS environment.