Pulsed radars that are not required to be Doppler sensing systems have traditionally employed low pulse repetition frequency (PRF) waveforms. A low PRF is defined as one which is sufficiently low so as to avoid range ambiguities. To avoid range ambiguity, the maximum detection range of the radar for all target and clutter returns is required not to exceed Rmu. This ensures that all returns are first-trace echoes, that is, that they fall within the first receiving period, and their range may be determined from a simple range delay timing method. Low PRF waveforms are typically low duty ratio waveforms and employ a large number of range cells matched to the range resolution of the radar distributed throughout the receiving period. Target range is therefore readily available from low PRF systems.