Title :
Scattering analysis of human body modeled by NURBS surfaces in MM-wave band
Author :
Mokhtari-Koushyar, Farzad ; Shishegar, Amir Ahmad
Author_Institution :
Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran
Abstract :
In this paper, we propose a frequency-independent method for calculation of scattered electromagnetic (EM) fields by the human body in millimeter-wave (MMW) band. The surface of the body is accurately modeled by non-uniform rational B-spline (NURBS) surfaces and is illuminated by a plane wave. The scattered EM fields are formulated by physical optics (PO) approximation. This approximation yields PO surface highly oscillatory integrals that are solved by numerical steepest descent path (NSDP) method, frequency-independently. This paper provides an efficient and accurate method for considering human body in indoor propagation, surveillance and medical imaging, and detection of human body by radiometry.
Keywords :
approximation theory; biological effects of fields; computational electromagnetics; electromagnetic wave scattering; millimetre wave propagation; physical optics; splines (mathematics); EM fields; MM-wave band; NSDP method; NURBS surfaces; PO approximation; frequency-independent method; human body detection; human body scattering analysis; indoor propagation; medical imaging; millimeter-wave band; nonuniform rational B-spline surfaces; numerical steepest descent path method; oscillatory integrals; physical optics approximation; plane wave; radiometry; scattered electromagnetic fields; surveillance; Biological system modeling; Optical surface waves; Splines (mathematics); Surface impedance; Surface reconstruction; Surface topography; Surface waves; Electromagnetic scattering; NURBS surfaces; human body; millimeter-wave band; physical optics;
Conference_Titel :
Millimeter-Wave and Terahertz Technologies (MMWATT), 2014 Third Conference on
Print_ISBN :
978-1-4799-6590-8
DOI :
10.1109/MMWaTT.2014.7057202
