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    Modeling a Turbulent Atmosphere as a Dynamic Channel for Narrow-Band Ultrasonic Signals

    TitleModeling a Turbulent Atmosphere as a Dynamic Channel for Narrow-Band Ultrasonic Signals
    Publication TypeConference Paper
    Año de publicación2007
    AutoresÁlvarez, FJ, Ureña, J, Hernández, Á, Jimenez, A, Villadangos, JM, del Perez, MC
    Idioma de publicaciónEnglish
    Conference Name19th International Congress on Acoustics (ICA'07)
    VolumenULT10-19
    Páginas1-6
    Conference LocationMadrid, España
    Fecha de publicación02/09/2007
    Numero ISBN84-87985-12-2
    Palabras claveDYNAMIC CHANNEL, narrowband ultrasonic signals, TURBULENT ATMOSPHERE
    URLhttp://www.sea-acustica.es/WEB_ICA_07/fchrs/papers/ult-10-019.pdf
    Abstract

    This work proposes a semi-empiric model for a turbulent atmosphere as a dynamic channel of transmission of narrow-band ultrasonic signals. It is based on a theoretical expression for the coherence time derived in a previous paper, and on the results obtained from the experimental analysis of propagation of a 50 kHz ultrasonic tone under different turbulence conditions. The model is used to predict the effects of a turbulent atmosphere on the propagation of binary encoded signals and their consequent detection by matched filtering. These predictions are compared with the results obtained with a real pulse compression system operating outdoors.

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    Dynamic channel, narrowband ultrasonic signals, turbulent atmosphere.pdf263.35 KB