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| 研究生： |
李果穎 Kuo-Ying Lee |
|---|---|
| 論文名稱： |
K波段地面鏈路降雨衰減效應之研究 An Experiment of K Band Terrestrial Propagation Through Rain |
| 指導教授： |
陳錕山
Kun-Shan Chen |
| 口試委員: | |
| 學位類別： |
碩士 Master |
| 系所名稱： |
地球科學學院 - 太空科學研究所 Graduate Institute of Space Science |
| 畢業學年度： | 89 |
| 語文別： | 中文 |
| 論文頁數： | 59 |
| 中文關鍵詞： | 地面鏈路 、降雨衰減 、K波段 |
| 外文關鍵詞： | Terrestrial Propagation, Rain Attenuation, K Band |
| 相關次數： | 點閱：11 下載：0 |
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不過由於此一波段在地表大氣通道傳播時，容易受到各項大氣環境因素的影響(如雲、雨滴、冰雹)而產生訊號衰減與去極化等不穩定的現象，因此無線傳輸環境之研究成為重要的課題。其中又以降雨衰減的影響最為顯著。
因此，本論文就是針對降雨衰減效應作一研究，量測及統計在中壢地區的降雨現象對於微波地面鏈路傳輸系統訊號衰減的情形，並嘗試對台灣北、中、南之大都會地區(台北、台中、高雄)的降雨衰減現象作評估。
本研究結果顯示：經過實驗比較之後，ITU(國際電信聯盟) 建議的雨衰預測模式與學者Robert K. Crane所提供的Global模式皆低估了台灣地區雨衰效應之影響。
In this study, we conducted a research on K band terrestrial propagation system to measure the rain attenuation in Chungli. We also made an estimation of rain attenuation in 3 metropolises in Taiwan (Taipei, Taichung, and Kaoshung).
The results show that ITU-R’s rain attenuation prediction model and Robert K. Crane’s Global model both make underestimates of the rain attenuation in Taiwan.
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