A guidance system for air-to-air missiles

A method and system for providing navigational data required to guide an air-to-air missile (2) to a target (3). The missile (2) is equipped either with an infrared seeking sensor or a radar system. The trajectory (5) of the target (3) is predicted on the basis of a series of location measurements. A flight path (6) of the missile (2) is predicted such that the missile (2) will intercept the target (3). Based on the predicted missile flight path (6), signals corresponding to the required rotational angle of the missile's sensor or radar antenna are generated and supplied to the sensor or radar's rotation control unit to cause the missile (2) to move along the predicted flight path (6).