Title :
Discrete ray-tracing method (DRTM) analysis of propagation characteristics along random rough surface in relation to development of wireless sensor network
Author :
Honda, Junichi ; Uchida, Kazunori
Author_Institution :
Intell. Inf. Syst. Eng., Fukuoka Inst. of Technol., Fukuoka
Abstract :
Discrete ray tracing method (DRTM) is applied to numerically analyze electromagnetic wave propagation along random rough surfaces. In the DRTM analysis, we make some assumptions in order to simplify the ray searching algorithm as well as to save computation time. First we discretize the rough surface in terms of linear piece wise edges (1D), and second we determine whether the two edges are on the line of sight (LOS) or not by checking whether two representative points on the two edges can be seen each other or not. Diffraction rays are also determined by this algorithm. In the numerical computation, we neglect multiple diffractions or higher order of scattered waves in terms of between edges. As for reflection, we include reflection rays having at most two times reflections at the source side and two times reflections at the receiver side. Numerical examples are given for ray examples and propagation characteristics along three types of rough surfaces.
Keywords :
radiowave propagation; ray tracing; wireless sensor networks; diffraction rays; discrete ray-tracing method analysis; electromagnetic wave propagation; line of sight; linear piece wise edges; random rough surface; ray searching algorithm; reflection rays; wireless sensor network; Computer vision; Diffraction; Electromagnetic analysis; Electromagnetic propagation; Ray tracing; Reflection; Rough surfaces; Surface roughness; Surface waves; Wireless sensor networks; Discrete Ray-Tracing Method (DRTM); random rough surface; sensor network; spectrum;
Conference_Titel :
Radio and Wireless Symposium, 2009. RWS '09. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2698-0
Electronic_ISBN :
978-1-4244-2699-7
DOI :
10.1109/RWS.2009.4957363