(3.238.96.184) 您好!臺灣時間:2021/05/12 23:52
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

: 
twitterline
研究生:楊富盛
研究生(外文):Fu-Sheng Yang
論文名稱:電磁波散射場模擬與視覺化
論文名稱(外文):Electromagnetic Field Simulation and Visualization
指導教授:翁世光
指導教授(外文):Shyh-Kuang Ueng
學位類別:碩士
校院名稱:國立臺灣海洋大學
系所名稱:資訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2008
畢業學年度:96
語文別:中文
論文頁數:59
中文關鍵詞:電磁波散射場光線追蹤法資料視覺化
外文關鍵詞:scattering electric fieldray tracingscientific visualization
相關次數:
  • 被引用被引用:1
  • 點閱點閱:200
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:39
  • 收藏至我的研究室書目清單書目收藏:0
本文提出了一個新的方法來模擬和呈現目標物被雷達波照射時所散射出來的電場。我們首先利用光線追蹤法計算出電磁波的傳遞路徑與電場,並計算出最後反射點的遠端散射場,然後將散射場累積在多層Ray Buffer上。最後這些Ray Buffer上的散射場強度被重新取樣,並進一步利用傳統電場視覺化的方法和實體成像法來呈現模擬結果。
In this thesis, an innovative method is proposed to simulate and visualize the scattering electric field of a target illuminated by radar waves. The propagation of the electromagnetic waves is computed by using a ray-tracing procedure first. Then the scattering electric field is accumulated on some concentric spherical surfaces. The magnitude of the scattering electric field is calculated and resampled on a 3D regular grid. The simulation results are illustrated by using both traditional visualization methods and volume rendering techniques.
1 緒論 1
1.1 前言 1
1.2 相關研究 2
1.3 研究方法簡介與論文結構 4
2 背景知識介紹 7
2.1 發射與接收天線 7
2.2 彈跳射線法 7
2.3 平面波入射場 8
2.4 散射場 9
3 散射電場計算與預測 10
3.1 電磁波路徑追蹤與幾何光學 10
3.2 物理光學計算 12
3.3 資料結構 15
3.4 Aperture 設定 16
4 加速模組 18
4.1 K-d tree 18
4.2 射線與三角片交集偵測 21
4.3 射線與Ray Buffer交集偵測 22
5 顯示模組 24
5.1 電場相位顯示方法 24
5.2 幾何光學顯示方法 25
5.3 目標物顯示方法 26
5.4 散射場顯示方法 26
6 實作結果與分析 30
6.1 測試環境 30
6.2 實作分析 30
6.3 SBR與MoM的結果比較 32
6.4 實作結果 34
6.4.1 BOX反射器 34
6.4.2 平板反射器1 37
6.4.3 平板反射器2 38
6.4.4 四面體反射器 41
6.4.5 F14戰鬥機 43
7 結論與未來發展 44
參考文獻 45
[1] D. Andersh, J. Moore, S. Kosanvich, D. Kapp, R. Bhalla, T. Courtney, A. Nolan, F. Germain, J. Cook, and J. Hughes, XPATCH 4: The Next Generation in High Frequency Electromagnetic Modeling and Simulation Software, 2000.
[2] J. Baldauf, and S. W. Lee, "On physical optics for calculating scattering from coated bodues", Journal of Electromagnetic Wave and Application, vol. 3, no. 8, pp. 725-746,1989.
[3] R. Bhalla, H. Ling, J. Moore, D. J. Andersh, S. W. Lee, and J. Hughes, "3D Scattering Center Representation of Complex Targets Using the Shooting and Bouncing Ray Technique: A Review," IEEE Antennas and Propagation Magazine, vol. 40, pp. 30-38, 1998.
[4] R. J. Burkholder, T. Lundin, "Foreard-Backward Iterative Physical Optics Algorithm for Computing the RCS of Open-Ended Cavities", IEEE Transactions on Antenna nad Propagation, vol. 53, no. 2, pp 793-799, 2005.
[5] S.H. Chen and S.K. Jeng, "SBR Image Approach for Radio Wave Propagation in Tunnels with and without Traffic," IEEE Transactions on Vehicular Technology, vol. 45, pp. 907-919, 1996.
[6] S.H. Chen and S.K. Jeng, "SBR Image Approach for Radio Wave Propagation in Indoor Environments with Metallic Furniture," IEEE Transactions on Antennas and Propagation, vol. 45, pp. 98-106, 1997.
[7] K. Engel, M. Hadwiger, J. M. Kniss, C. Rezk-Salama, and D. Weiskopf, Real-Time Volume Graphics: AK Peters, Ltd, 2006.
[8] A. Glassner, An Introduction to Ray Tracing: Academic Press, 1989.
[9] O. Gutierrez, F. S. deAdana, M. F. Catedra, P. Perez, "Accelaration Technique Base on Ray-Tracing to Analyze the RCS in Open Cavities", IEEE Antenna nad Propagation society International Symposium, pp. 4499-4502, 2004.
[10] S. C. Hung, C. C. Chiu, C. H. Chen, "Wireless communication characteristics for tunnels with and without traffic", ICUPC’98, pp. 117-122, 1998.
[11] A. Ishimaru, "Electromagnetic Wave Propagation, Radiation, and Scattering", Englewood Cliff: PrenticeHall, pp 306-308, 1991.
[12] J. Jin, The Finite Element Method in Electromagnetics, 2nd Edition, Wiley-IEEE Press, 2002.
[13] J. Kniss, C. Hansen, M. Grenier, and T. Robinson, "Volume rendering multivariate data to visualize meteorological simulations:a case study", Proceedings of the symposium on Data Visualisation 2002, pp.189-ff, 2002.
[14] S. Kuroda, Y. Inasawa, S. Morita, S. Nishikawa, Y. Konishi, Y. Sunahara, and S. Makino, "Radar Cross Section Analysis Considering Multi-Reflection Inside a Radome Based on SBR Method," IEICE Transactions on Electron., vol. E88-C, pp. 2274-2280, 2005.
[15] S. W. Lee, and R. Mittra, "Fourier Transform of a Polygonal Shape Function and Its Application in Electromagnetics", IEEE Transactions on Antennas and Propagation, vol. AP-31, no. 1, January 1983.
[16] G. Liang and L. B. Henry, "A New Approach to 3-D Ray Tracing for Propagation Prediction in Cities," IEEE Transactions on Antennas and Propagation, vol. 46, pp. 853-863, 1998.
[17] H. Ling, R.C. Chou, and S.W. Lee, "Shooting and Bouncing Rays: Calculating the RCS of an Arbitrarily Shaped Cavity," IEEE Transactions on Antennas and Propagation, vol. 37, pp. 194-205, 1989.
[18] D. A. McNamara, C. W. I. Pistorius, J. A. G. Malherbe, Introduction to the uniform Geometrical Theory of Diffraction, Boston: Artech House, 1990.
[19] T. Moller, E. Haines, and T. Akenine-Moller, Real-Time Rendering, 2nd,2002
[20] M.M.Ney, "Method of Moments as Applied to Electromagnetic Problems", IEEE Transactions on Microwave Theory and Techniques, vol.33, no.10,pp. 972-980,1985.
[21] T.J. Purcell, I. Buck, W. R. Mark, and P. Harahan, "Ray Tracing on Programmable Graphics Hardware", ACM SIGGRAPH’02, pp. 703-7112, 2002.
[22] J. M. Rius, M. Ferrando, and L. Jofre, "GRECO: Graphical Electrmagnetic Computing for RCS Prediction in Real Time," IEEE Antennas and Propagation Magazine, vol. 35, pp. 7-17, 1993.
[23] H. Samet, The Design and Analysis of Spatial Data Structures: Addison-Wesley, 1990.
[24] U. S. INAN, and A. S. INAN, Electromagnetic Waves, Prentice Hall,1999
[25] L. Szirmay-Kalos, V. Havran, B. Balazs, and L. Szecsi, On the Efficiency of Ray-shooting Acceleration Schemes, 2002.
[26] F. Weinmann, "Ray Tracing with PO/PTD for RCS Modeling of Large Complex Objects," IEEE Transactions on Antennas and Propagation, vol. 54, pp. 1797-1806, 2006.
[27] T. Whitted, "An Improved Illumination Model for Shaded Display," Communication of ACM, vol. 23, pp. 343-349, 1980.
[28] S.Woop, J. Schmittler, P. Slusallek, "RPU: a programmable ray processing unit for real time ray tracing", ACM SIGGRAPH’05, pp. 434-444, 2005.
[29] C.F. Yang, B.C. Wu, and C.J. Ko, "A Ray-Tracing Method for Modeling Indoor Wave Propagation and Penetration," IEEE Transactions on Antennas and Propagation, vol. 48, pp. 907-919, 1998.
[30] C. L. Yu and S. W. Lee, Radar Cross Section Computation and Visualization by Shooting and Bouncing Ray (SRB) Technique, 1992.
[31] 翁世光,楊富盛, "電磁波散射場模擬與視覺化", 96年度國方科技學術合作計畫成果發表會, 2007年11月
[32] 鄭士康, "飛機外形最佳化整合設計程式隱密外形副程式發展",國防科技發展方案學術合作協調小組研計畫成果報告, 1993年7月.
[33] 歐陽明,鄭士康, "飛機雷達截面積分析及視覺化", 國防科技發展方案學術合作協調小組研究計畫成果報告, 1994年11月
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔