What's New With Smart Weapons A Precision Guided Munitions [PGM] is a missile, bomb or artillery shell equipped with a terminal guidance system. It contains electrical equipment that guides it in the last phase before impact. The terminal guidance unit is designed to sense emitted or reflected EMR (electromagnetic radiation) within its field of view. Target Acquisition (TA) systems must be used to employ a PGM, and include the human eye, which is the most commonly employed TA system. Others include radar, TV and forward-looking IR sensor display systems, and systems using laser quidance. The classic target acquisition cycle is...