3rd French conference on acoustics
J. Phys. IV France 04 (1994) C5-1323-C5-1326
Causality and conservation of energy : their implications for prediction of receiver performanceD.E. LEIKIN
Institute of Acoustics, Russian Academy of Sciences, 4 Shvernik Street, 117036 Moscow, Russia
the paper is concerned with the analysis of receiver performance in range-dependent waveguides. The problem is shown to be amenable to a simple theoretical treatment. The necessary analytical technique is based on the application of the principle of causality and the law of conservation of energy. The focus of the analysis is on prediction of limiting capabilities of an optimum detector of quasi-deterministic signals in irregular multi-mode channels. Explicit analytical formulae are derived for the probability of detection, the far-field directivity function and the Cramer-Rao bound for mean-root-square errors in estimates of signal parameters. The theory presented reveals clear physical limits on capabilities of signal processing technique in non-uniform oceanic environment.
© EDP Sciences 1994