Abstract: A radar system including an antenna adapted to provide two beams one of which covers a higher elevation than the other, and means for producing two successive radar pulses one of which is longer than the other, a switch for selecting in dependence upon range the beam required and for selecting a predetermined pulse length for use therewith so that when receiving signals from short ranges the shorter pulse is used with the higher beam only and when receiving signals from longer ranges the longer pulse is used with the lower beam only and at intermediate ranges the shorter pulse is used with the lower beam while the longer pulse is used with the higher beam.