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題名 | A 2-D Ray Tracing Model for the Prediction of Uhf Wave Propagation in Microcellular Environments=微蜂巢環境下超高頻傳輸之二維射線追蹤模式 |
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作者 | 陳興義; 趙耀庚; Chen, Hsing-yi; Chau, Yawgeng A.; |
期刊 | 中國工程學刊 |
出版日期 | 19990300 |
卷期 | 22:2 1999.03[民88.03] |
頁次 | 頁221-229 |
分類號 | 448.82 |
語文 | eng |
關鍵詞 | 微蜂巢; 均勻幾何繞射理論; 二維射線追蹤; Microcellular; Uniform theory of diffraction; 2-D ray tracing; |
中文摘要 | 在微蜂巢系統無線傳輸預估中,以幾何光學(GO)及均勻幾何繞射理論(UTO)為基 礎之射線追�j模式是一種非常有效之技術。在這些應用技術中,射線追�j應用於大部份的實 際例子中是最複雜且耗時的方法,本論文提出之〞由平面到空間〞射線追�j模式特別適合微 蜂巢之環境。本文所提之射線追�j模式是使用二維之追�j演繹來解決空間之問題,而非利用 複雜的三維演繹法。本文同時利用一種自動方法有效的去建立建築物之數據。研究結果發現 ,預估值與量測值相當吻合。 |
英文摘要 | Ray tracing tecniques using Geometrical Optics (GO) and the Uniform Geometrical Theory of Diffraction (UTD) are very effective in the prediction of radio wave propagation for a microcellular system. In the applications of those techniques, ray tracing is the most complicated and time consuming procedure in most practical cases. In this paper a very efficient "from plane to space" ray tracing model is presented, which is particularly suitable for applications of the ray tracing techniques in microcellular environments. This model uses an equivalent 2-D ray tracing algorithm instead of a complicated 3-D algorithm to solve space problems. An auto-generating method for efficiently building the database is also presented in this paper. Excellent aggreement between predictions and measurements was found. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。