Analysis of Brillouin Precursor Propagation Through Foliage for Digital Sequences of Pulses

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.

[1]  K. Sarabandi,et al.  A Physics-Based Statistical Model for Wave Propagation Through Foliage , 2007, IEEE Transactions on Antennas and Propagation.

[2]  Alexander A. Chukhlantsev,et al.  Conductivity of leaves and branches and its relation to the spectral dependence of attenuation by forests in meter and decimeter band , 2003, IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477).

[3]  K. Oughstun,et al.  Pulse propagation in a linear, causally dispersive medium , 1991 .

[4]  Kamal Sarabandi,et al.  Optimum Polarizations for Discrimination of a Foliage-Camouflaged Target, Using Genetic Algorithms , 2009, IEEE Geoscience and Remote Sensing Letters.

[5]  Fernando L. Teixeira,et al.  Frequency dispersion compensation in time reversal techniques for UWB electromagnetic waves , 2005, IEEE Geoscience and Remote Sensing Letters.

[6]  Christian Mätzler,et al.  Microwave (1-100 GHz) dielectric model of leaves , 1994, IEEE Trans. Geosci. Remote. Sens..

[7]  Kurt Edmund Oughstun.  Dynamical evolution of the Brillouin precursor in Rocard-Powles-Debye model dielectrics , 2005 .

[8]  R. Luebbers,et al.  Comments with reply, on 'Pulse propagation in a linear, causally dispersive medium' by K.E. Oughstun , 1993, Proc. IEEE.

[9]  Kurt E. Oughstun.  Electromagnetic and Optical Pulse Propagation 2 , 2009 .

[10]  Toru Uno,et al.  COMMENTS ON PULSE PROPAGATION IN A LINEAR, CAUSALLY DISPERSIVE MEDIUM . AUTHOR'S REPLY , 1993 .

[11]  Franz J. Meyer,et al.  The Potential of Low-Frequency SAR Systems for Mapping Ionospheric TEC Distributions , 2006, IEEE Geoscience and Remote Sensing Letters.

[12]  Peter Pleshko,et al.  Experimental Observation of Sommerfeld and Brillouin Precursors in the Microwave Domain , 1969 .

[13]  Christian Mätzler,et al.  Thermal Microwave Radiation: Applications for Remote Sensing , 2006 .

[14]  C A R Pearce,et al.  The permittivity of two phase mixtures , 1955 .

[15]  Fawwaz Ulaby,et al.  Microwave Dielectric Spectrum of Vegetation - Part II: Dual-Dispersion Model , 1987, IEEE Transactions on Geoscience and Remote Sensing.

[16]  Natalie A. Cartwright,et al.  Brillouin precursor decay in dispersive attenuative materials , 2009, 2009 IEEE Antennas and Propagation Society International Symposium.

[17]  Gary S. Brown,et al.  A theory and model for wave propagation through foliage , 1982 .

[18]  Fawwaz Ulaby,et al.  A Scatter Model for Leafy Vegetation , 1978, IEEE Transactions on Geoscience Electronics.

[19]  Margaret Cheney,et al.  Synthetic-aperture imaging through a dispersive layer , 2004 .

[20]  Alexander A. Chukhlantsev,et al.  ATTENUATION OF ELECTROMAGNETIC WAVES BY VEGETATION CANOPIES IN THE 100 – 10000 MHz FREQUENCY BAND , 2012 .