A small drone moves around a room. On a monitor, an aiming marker follows it. The maker has built a setup at home that he presents as a laser against drones. Between a table, a monitor and a swivelling device, an ambitious homemade project is taking shape.
The interesting part is the connection between seeing and aiming. The computer needs to keep the flying target in view while the aiming system moves with it. A drone does not stay neatly in one fixed spot.
The software has to keep up
The screen shows how the setup tracks the aircraft’s movement. Whenever the drone changes position, the direction must change too. That requires constant interaction between the image being observed and the device’s movement.
This is interesting beyond countering drones. A robot arm following a moving object faces a similar question: where is the object now, and how should the machine respond?
Why accurate tracking matters
For a laser intended to damage a target, accurate aiming is essential. A powerful beam of light needs to reach the target. The British DragonFire programme shows how much technology professional laser weapons devote to tracking and aiming.
The home setup mainly shows a trial of tracking small drones. That does not make it a deployable air-defence weapon. The interesting step in this homemade project is that detection and aiming come together in a device on a table.
