atemkeng

                # the phase center PSF
                self.phasePSF = phasePSF;
                # Observed frequency
                self.freq0 = freq0 or 1.;
                # the compression in time
                self.dtime = dtime or 1;
                # the compression in frequency
                self.dfreq = dfreq or 1;
                # the resolution or the pixel size in radian
                self.resolution = np.pi*(cellsize/3600.)/180.;