DETERMINATION OF THE RELATIVE POSITION OF A SOURCE AND RECEIVER BY TIME-DELAY SPECTROMETRY

A new method of measuring the transit time of acoustic signals is disc ussed; it is based on the use of wideband swept-frequency signals and exhibits high accuracy, noise immunity, and simple hardward implementa tion. The accuracy of the results can be increased several orders of m agnitude according to a narrowband deconvolution procedure developed b y the authors. The gain can be close to the channel signal-to-noise ra tio, as is indeed confirmed by the results of numerical calculations a nd full-scale experiments.