Title :
Shadow boundary and truncated wedge ILDCs in Xpatch [radar applications]
Author :
Moore, John T. ; Yaghjian, Arthur D. ; Shore, Robert A.
Author_Institution :
Sci. Applications Int. Corp., Austin, TX, USA
Abstract :
Recent electromagnetic formulation efforts related to the shooting and bouncing ray tracing code suite Xpatch have concentrated upon higher order diffractive phenomena such as creeping waves and the truncation effects due to diffraction from finite sized wedge faces. These classes of diffraction are essential components of the radar returns at large bistatic angles from complex, low observable targets composed of smooth, rounded surfaces. This paper explains that during 2002-2004 the shadow boundary incremental length diffraction coefficients (ILDCs) and truncated wedge ILDC formulations were implemented in Xpatch. In addition, the supporting Xpatch geometry tools were modified to support these new ILDC capabilities.
Keywords :
electromagnetic wave diffraction; electromagnetic wave scattering; radar signal processing; ray tracing; Xpatch geometry tools; complex low observable targets; creeping waves; finite sized wedged face truncation effects; higher order diffractive phenomena; incremental length diffraction coefficients; large bistatic angle radar returns; scattered field responses; shadow boundary ILDC; shooting/bouncing ray tracing code; smooth rounded surface targets; truncated wedge ILDC; Electromagnetic diffraction; Electromagnetic forces; Electromagnetic scattering; Geometry; Laboratories; Lighting; Optical surface waves; Piecewise linear approximation; Radar; Ray tracing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551228
