TY - CONF T1 - Modeling a Turbulent Atmosphere as a Dynamic Channel for Narrow-Band Ultrasonic Signals T2 - 19th International Congress on Acoustics (ICA'07) Y1 - 2007 A1 - Fernando J. Álvarez A1 - Ureña, J. A1 - Álvaro Hernández A1 - Ana Jimenez A1 - José Manuel Villadangos A1 - María del Carmen Perez KW - DYNAMIC CHANNEL KW - narrowband ultrasonic signals KW - TURBULENT ATMOSPHERE AB -

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.

JF - 19th International Congress on Acoustics (ICA'07) CY - Madrid, España VL - ULT10-19 SN - 84-87985-12-2 UR - http://www.sea-acustica.es/WEB_ICA_07/fchrs/papers/ult-10-019.pdf ER -