Showing papers on "Time–frequency analysis published in 1983"
TL;DR: Two new time-frequency representations are obtained and discussed that, for amplitude-modulated signals, correspond to mean-frequency-selective correlation and Doppler-frequency -selective convolution.
Abstract: Acousto-optic processors for calculating different two-dimensional (2-D) time–frequency representations for one-dimensional temporal signals in real time are described. The various 2-D representations discussed in the literature, such as the Wigner distribution and the ambiguity function, are shown to be obtainable through minor variations in an acousto-optic processor consisting of two Bragg cells in a parallel configuration. Also obtained and discussed are two new time–frequency representations that, for amplitude-modulated signals, correspond to mean-frequency-selective correlation and Doppler-frequency-selective convolution. Experimental results are presented to highlight the special features of the different time–frequency representation.
23 citations