No. 3 Backscattering Analysis of Cylinder Shaped Scatterer in Vegetation Medium: Comparison Between Theories
Main Article Content
This paper analyses the backscattering cross section of a cylinder both using traditional method model and a new numerical solution model, namely Relaxed Hierarchical Equivalent Source Algorithm (RHESA). The purpose of this study is to investigate the prospect of incorporating numerical solution model into volume scattering calculation, to be applied into microwave remote sensing in vegetation area. Results show a good match, suggesting that RHESA may be suitable to be used to model the more complex nature of vegetation medium.
H. T. Ewe, H. T. Chuah and A. K. Fung, “A Backscatter Model for A Dense Discrete Medium: Analysis and Numerical Results,” Remote Sensing of Environment, vol. 65, no. 2, pp. 195–203, 1998.
H. T. Ewe and H. T. Chuah, “A Study of Fresnel Scattered Field for Non-spherical Discrete Scatterers,” Prog. in Electromagnet. Res., vol. 25, pp. 189-222, 2000.
H. T. Ewe, “A Microwave Scattering Model for An Electrically Dense Discrete Random Medium,” Unpublished Doctoral Dissertation, Multimedia University, Malaysia, 1999.
S. Syabeela and H. T. Ewe, “Backscattering Analysis for Snow Remote Sensing Model with Higher Order of Surface-Volume Scattering,” Prog. in Electromagnet. Res. M, vol 48, pp. 25-36, 2016.
S. Syahali and H. T. Ewe, “Remote Sensing Backscattering Model for Sea Ice: Theoretical Modelling and Analysis,” Adv. Polar Sci., vol 24, no. 4, pp. 248-257, 2013.
J. Y. Koay, H. T. Ewe and H. T Chuah, “A Study of Fresnel Scattered Fields for Ellipsoidal and Elliptic-Disk-Shaped Scatterers,” IEEE Trans. on Geoscience and Remote Sensing, vol 46, no. 4, pp. 1091 – 1103, 2008.
C. F. Lum, X. Fu, H. T. Ewe and L. J. Jiang, “A Study of Scattering from A Layer of Random Discrete Medium With Hierarchical Equivalent Source Algorithm (HESA),” Prog. in Electromagnet. Res. Symp. (PIERS), Shanghai, China, August 2016.
X. Fu, L. J. Jiang and H. T. Ewe, “A Novel Relaxed Hierarchical Equivalent Source Algorithm (RHESA) for Electromagnetic Scattering Analysis of Dielectric Objects,” J. of Electromagnet. Waves and Appl., vol 30, no. 11, pp. 1631 – 1642, 2016.
J. A. Stratton, Electromagnetic Theory, New York: McGraw-Hill, 1941.
H. C. Van de Hulst, Light Scattering by Small Particles, New York: John Wiley and Sons, 1957.
R. Schiffer and K. O. Thielheim, “Light Scattering by Dielectric Needles and Disks,” J. of Appl. Phys., vol 50, no. 4, pp. 2476-2483, 1979.
M. A. Karam and A. K. Fung, “Leaf-shape Effects in Electromagnetic Wave Scattering from Vegetation,” IEEE Trans. on Geoscience and Remote Sensing, vol 27, no. 6, pp. 687-697, 1989.
A. K. Fung, Microwave Scattering and Emission Models and Their Applications, Norwood, Massachusetts: Artech House, 1994.
H. T. Chuah, S. Tjuatja, A. K. Fung and J. W. Bredow, “A Phase Matrix for A Dense Discrete Random Medium: Evaluation of Volume Scattering Coefficient,” IEEE Trans. on Geoscience and Remote Sensing, vol. 34, no. 5, pp. 1137-1143, 1996.
W. C. Gibson, The Method of Moments in Electromagnetics, Taylor & Francis Group, LLC, 2008.
J. Jin and W. C. Chew, Computational Electromagnetics: The Method of Moments. The Electrical Engineering Handbook, Elsevier Inc, 2005.