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.
© 1983 Optical Society of America
Full Article | PDF ArticleMore Like This
Charles Garvin and Kelvin Wagner
Appl. Opt. 35(20) 3937-3944 (1996)
Shih-Chun Lin and A. B. Tveten
Opt. Lett. 7(9) 448-450 (1982)
Tomasz Jannson
Opt. Lett. 8(4) 232-234 (1983)