Wobulation is a term which refers to the known variation (or wobble) in a characteristic. Examples of where the term is used, include to describe advanced radar waveform modulations - where the repetition rate or centre frequency of a signal is changed in a repetitive fashion to reduce the probability of intercept of a signal. Such techniques can also have some beneficial effects to a received radar signal. It can be used to reduce clutter, making side-lobe powers decorrelate by a proportion and… (More on Wobulation)