Air Target Sweden

MDI AS-133/12U

Miss distance indicator for stiff targets

Universal MDI

The universal 12-sector Miss Distance Indicator MDI AS-133/12U is intended to be installed in hard targets and UAVs (Unmanned Aerial Vehicles). The MDI is a universal type, i.e. it handles all target courses relative the firing gun or missile, i.e. all types of attacking and passing courses. The 12-sector MDI AS-133/12U detects acoustically the shock wave generated by the passing supersonic projectile. The miss distance is determined by the amplitude of the shock wave while the angular position is determined from the hit order between the indicator´s different pressure sensors.

The miss distance and angular position of the projectiles are measured in real time and the data is transmitted as raw data signals via the special designed VHF/UHF transmitter to the scoring station. Since raw data is used, all calculations are made in the scoring station. A recalculation of the scoring result, with later more accurate parameters, can easily be made in the scoring station for further improved accuracy.

The MDI consists of a microphone nose, a transpulse unit, cables and an antenna. Several antenna types are available to fit the most common targets or UAVs on the market. The MDI is powered from a rechargeable battery which is housed in the tranpulse unit. The transpulse unit is waterproof. Hayes TRX-2 and Southwest Aerospace TDK-39 are examples of targets where the MDI AS-133/12U has been installed in. Air Target´s products can very easily be modified to meet our customers´ requirements.