VAST Training provides visual feedback on detector swing by tracking the 3D position, speed and tilt angle of a detector search head. The system includes a small transmitter module that is attached to the shaft of any handheld detector and contains ultrasonic transmitters, an ultrasonic height sensor and a miniature inertial measurement unit. The transmitter emits ultrasonic pulses and communicates wirelessly with two tracking belts that contain ultrasonic receivers, which are placed on the edges of the training lane. The belts communicate over Bluetooth with an Android tablet that processes and visualizes detector trajectory information to the trainer.