Figure 1From: Filtering in the joint time/chirp-rate domain for separation of quadratic and cubic phase chirp signalsProfiles of time-frequency pass regions of the proposed filter for a cubic phase reference signal: (a) and (b) time-frequency pass region profiles of the proposed filter around a quadratic instantaneous frequency curve at a fixed time, for the scale factor taken as 1 and −1, respectively, in Equation (19). Bandwidth parameter: B f = 4 Hz.Back to article page