tailieunhanh - Báo cáo hóa học: " 3D Visualization of Radar Backscattering Diagrams Based on OpenGL"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: 3D Visualization of Radar Backscattering Diagrams Based on OpenGL | EURASIP Journal on Applied Signal Processing 2004 3 358-365 2004 Hindawi Publishing Corporation 3D Visualization of Radar Backscattering Diagrams Based on OpenGL Yulia V. Zhulina Interstate Joint Stock Corporation Vympel . Box 83 Moscow 1010001 Russia Email yuliajulina@ Received 20 May 2003 Revised 13 October 2003 Recommended for Publication by Xiang-Gen Xia A digital method of calculating the radar backscattering diagrams is presented. The method uses a digital model of an arbitrary scattering object in the 3D graphics package OpenGL and calculates the backscattered signal in the physical optics approximation. The backscattering diagram is constructed by means of rotating the object model around the radar-target line. Keywords and phrases radar scattering backscattering diagrams physical optics. 1. INTRODUCTION The task which represents a constant interest in radiolocation is constructing a scattering diagram of an object illuminated by a radar. This task has been resolved more than once by the accurate mathematical methods of electrodynamics 1 2 3 by experimental modeling of the radar systems 4 5 by digital modeling of irradiated objects as combination of elements with known backscattering diagrams such as pieces of the flat plates 6 7 8 9 10 . The various methods for electromagnetic field modeling are comprehensively summarized in 11 . A review of generalized moment methods in the differential equations of electromagnetics is given in 12 . At present the first method widely uses the numerical solution of the problem. Digital electromagnetics simulation allows accurate modeling of physical systems in combination with an accurate numerical solution of either differential or integral formulations of Maxwell s equations. This computational electromagnetics can be applied to many practical engineering problems for example antenna design calculation backscattering diagrams targets recognition and so forth. However the accurate analysis and synthesis of .

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