An airborne threat against a vehicle that never stands still
A moving security vehicle is a far harder problem than a fixed installation. Engine, wind and road noise mask the drone’s acoustic signature. The vehicle changes heading constantly, so every bearing needs a reference frame to mean anything. And an autonomous drone flying a stored route transmits nothing to intercept. That combination is what this R&D programme set out to solve.
Complementary layers, one fusion engine
No single sensor beats this threat alone, so no single sensor was asked to. Each layer contributes partial information and the fusion engine does the reasoning: cross-correlating detections, computing a combined confidence score, and deciding which detections belong to the same target.
Acoustics detect and bear. Radar supplies range, radial velocity and trajectory — the numbers that turn a detection into a priority. Panoramic vision keeps continuous context, and two independent PTZ cameras confirm and follow.
Passive by design
The primary detector emits nothing. Five microphone arrays, synchronised to within microseconds, listen for rotor signatures and estimate bearing. An adversary flying an autonomous drone gets no indication that the convoy has already seen them.
