Polytime coding as a means of pulse compression

A set of code sequences is proposed for radar applications in which all pha se steps are equal and the time duration of each phase state is varied in o rder to properly approximate either a stepped-RE waveform or a linear FM wa veform, Since these proposed waveforms have varying time durations at each phase state, they are referred to as "Polytime" codes. Polytime code sequen ces have the advantage that arbitrary time-bandwidth waveforms can be gener ated with a few phase states. Of particular interest are cases where phase is quantized into two states (i.e., 0 degrees and 180 degrees).