DD-R23 Ku-band medium-range four-element array radar 1, Product Overview The DD - R23 Ku - band medium - range four - element array radar is engineered with a state - of - the - art system that is entirely solid - state, fully coherent, and integrates a pulse Doppler mechanism. This advanced configuration enables the radar to possess the outstanding capacity for all - weather detection and to issue early warnings specifically for "low, small, slow" targets. Such targets are