Script error: No such module "Multiple image". Radar is an object detection seestem which uises radio waves tae determine the range, altitude, direction, or speed o objects. It can be uised tae detect aircraft, ships, spacecraft, guidit missiles, motor vehicles, wather formations, an terrain. The radar dish or antenna transmits pulses o radio waves or microwaves which boonce aff ony object in thair path. The object returns a tiny pairt o the wave's energy tae a dish or antenna which is uisually locatit at the same steid as the transmitter.