Patent Document ID: 4789339
Application ID: 07007141
Patent Flag: 1

Claim One:
1. A gunnery training and trainee-reaction measuring system having an actual armoured vehicle having a gun and a conventional fire control system, the fire control system having a laser rangefinder, a gun trigger switch, means for determining a ballistic and environmental parameters, means for determining gun orientation, a thermal image viewing arrangement, a video display device for displaying a video version of the thermal image captured by the viewing arrangement, and a fire control computer arranged for electronically injecting into the video display device an aiming mark representative of projectile position, which position is calculated by the fire control computer from known target range, known ballistic and environmental parameters and known gun orientation, the improvement comprising the provision of portable training equipment capable of being releasably connected to the fire control system and comprising means for inhibiting emission of laser radiation from the laser rangefinder, means for inhibiting operation of the thermal image viewing arrangement, a video image data store and means for providing on the video display device images selected from the data store, one or more of the selected images incorporating a simulated target at a simulated range, means for extracting gun orientation signals from the fire control system, and means for selecting from the data store the displayed video images according to the extracted gun orientation signals, means for signalling the simulated range to the fire control system during the appearance of the pertaining simulated target on the video display device by initiation of the laser rangefinder, whereby the fire control computer is enabled to generate an aiming mark, and the training equipment further comprising means for capturing the location of the aiming mark when the gun trigger switch is operated and means for computing the displacement between the simulated target position and the captured aiming mark position as a measure of training efficiency.