Title :
Analysis of Brillouin Precursor Propagation Through Foliage for Digital Sequences of Pulses
Author :
Alejos, Ana Vazquez ; Dawood, M. ; Mohammed, H.U.
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
In this letter, we investigate the propagation of Brillouin precursors through dispersive foliage media, using leafy vegetation dielectric models proposed by Fung-Ulaby, El Rayes-Ulaby, Brown-Curry-Ding, Maetzler, and Pearce. A fast-Fourier-transform-based formulation is used to analyze the peak amplitude decay and pulse broadening effect (or effective oscillation frequency) related to the precursor formation for both single pulse and sequence of pulses traveling through the leafy vegetation. The influence of the Brillouin precursor on the receiver structure is also investigated. Simulations have been carried out in frequency bands between 100 MHz and 6 GHz allocated for remote sensing applications and digital satellite communications.
Keywords :
Brillouin spectra; fast Fourier transforms; geophysical signal processing; remote sensing; vegetation; Brillouin precursor propagation; digital pulse sequence; digital satellite communication; dispersive foliage media; fast Fourier transform; leafy vegetation dielectric model; peak amplitude decay; pulse broadening effect; remote sensing; Dielectric losses; Dispersion; Electromagnetic propagation; Frequency; Radio spectrum management; Remote sensing; Satellite communication; Sequences; Soil; Vegetation; Correlation; dielectric losses; dispersive; pseudorandom codes; vegetation;
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2010.2051213
