行動無線通訊電波在市區環境中之傳播模式

Abstract

在本論文中,吾人利用幾何光學,統一繞射理論及電磁波學理來發展市區 或住宅區的電波傳播模式,並利用RTM方法來建立電波經多重建築物繞射之 模式,以處理不同樓高及樓房彼此間距離不同的情形.為驗證吾人所發展之 理論模式,將在交大校園中選擇適當之傳播環境進行電波場強量測,並將理 論值與量測值互相比較,驗證後發現各驗證模式之準確度不錯. In this paper, geometric optics, uniform theory of diffraction and theory of wave propagation are employed to develop the radio propagation model in a urbanor residential area. The method of ray transmission matrix is incorporated in the model to explore the situation when the spacing betweeb rows of buildings is different and the heights of buildings are different.To assuer the prediction accuracy of the model, several measurementsare carried out at the Campus of Chiao Tung University in Hsinchu.