A uniform sidelobe level represents an optimum performance criterion in the
design of pulse compression waveforms. A new form of pulse compression fil
ter for polyphase codes is presented which generates a flat uniform sidelob
e pattern similar to those obtainable from Barker codes. The sidelobe level
s are decided solely by the length of the phase codes, which can be set arb
itrarily. Their use involves a small loss and degradation in range resoluti
on, but excellent Doppler tolerance.