Cross correlation of short-time spectral histories
- 1 February 1976
- journal article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 59 (2) , 381-388
- https://doi.org/10.1121/1.380874
Abstract
Two-dimensional cross correlation of short-time power spectral histories (energy distribution functions) is a hybrid signal-processing technique that uses both coherent and incoherent processing. Background is developed which relates the energy density function to the energy distribution function and the wide-band ambiguity function. The cross correlation of a signal’s energy distribution function is shown to be a convolution of its squared magnitude ambiguity function with the squared magnitude ambiguity function of the impulse response of the filter used to obtain the energy distribution functions. The output signal-to-noise ratio is derived for a single Doppler channel, assuming sampled, single-valued, energy distribution functions. The signal-to-noise ratio is also obtained, assuming amplitude spectral analysis, for the linear frequency modulated slide waveform. Subject Classification: [43]60.20; [43]30.20; [43]28.20.This publication has 0 references indexed in Scilit: