Title :
Brillouin precursors propagation through sea water at GHz frequency
Author :
Hao Zhang ; Guoping Zhang ; Gulliver, T. Aaron ; Bing Zheng
Author_Institution :
Dept. of Electr., Ocean Univ. of China, Qingdao, China
Abstract :
Precursor fields in lossy Debye media have been shown to have a sub-exponential attenuation rate, thus they are good candidates for underwater communications. In this paper, we investigate the propagation of Brillouin precursors through sea water with static conductivity using the dielectric models proposed by Meissner and Wentz. A fast-Fourier-transform method is used to analyze the peak amplitude decay and pulse broadening related to the precursor. The sea water salinity considered is between 25 and 50 ppt. The performance is evaluated at frequencies between 1GHz and 32GHz, as they have been allocated for short distance underwater communications.
Keywords :
electromagnetic wave propagation; fast Fourier transforms; seawater; Brillouin precursors propagation; GHz Frequency; dielectric models; fast-Fourier-transform method; lossy Debye media; peak amplitude decay; precursor fields; pulse broadening; sea water salinity; short distance underwater communications; static conductivity; subexponential attenuation rate; Attenuation; Conductivity; Dielectrics; Dispersion; Media; Scattering; Underwater communication; Electromagnetic propagation; dispersive media; underwater communication;
Conference_Titel :
Oceans, 2012
Conference_Location :
Hampton Roads, VA
Print_ISBN :
978-1-4673-0829-8
DOI :
10.1109/OCEANS.2012.6405031
