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RCS and trajectory calculation of the moving object in the virtual reality technology

Author: LiMinQuan
Tutor: WuXianLiang
School: Anhui University
Course: Electromagnetic Field and Microwave Technology
Keywords: Electromagnetic scattering Radar cross section GRECO Track Doppler shift Complex targets
CLC: TP391.9
Type: Master's thesis
Year: 2001
Downloads: 214
Quote: 0
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Abstract


In this paper, complex target geometric modeling , and analysis of the attitude of the static, dynamic target electromagnetic scattering , Doppler frequency and time targets . First, the NURBS spline arbitrarily complex target precisely constructed , lay the foundation for electromagnetic calculations . And static complex target high-frequency electromagnetic scattering study . In typical example GRECO proved that this method has high accuracy and efficiency , and the complexity of the calculation accuracy and target . On this basis , the dynamic and complex electromagnetic scattering from the study . In the analysis of electromagnetic scattering of the moving target , first introduced two different inertial coordinate system - stationary coordinate system , motion coordinate system . The incident field in the stationary coordinate system to the Lorentz transformation , motion coordinate system of the incident field , and then find the scattered field in the moving frame , and then the Lorentz inverse transform obtained the scattered field in the stationary coordinate system . The first time visualization of calculation applied to a complex moving target RCS calculation . Necessary to coordinate adjustment , contributing part of the scattered field on the surface of the target with the greatest proportion of the display in a visible area . Pixel summation of the visible area of ??the radar cross section of the moving target . Calculated the trajectory of the flight target several special flight status , given the different moments attitude angle . In introducing a reasonable approximation and simplified based on the Doppler shift of the moving target for research , and the calculation result of the Doppler signal is given .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Computer simulation
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