English  |  正體中文  |  简体中文  |  Items with full text/Total items : 65421/65421 (100%)
Visitors : 22269261      Online Users : 154
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/65029


    Title: 大氣環境對中頻無線電波地波傳播強度影響的分析與研究
    Authors: 程海翔;Cheng,Hai-Hsiang
    Contributors: 太空科學研究所
    Keywords: 中頻無線電波;地波傳播
    Date: 2014-08-19
    Issue Date: 2014-10-15 14:38:38 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 在使用電離層觀測儀觀測天波時,在觀測資料上總會有些一日性的週期變化,普遍會以電離層之電子濃度變化來解釋,在地波資料上也有同樣情形,但卻無法以電子濃度變化來解釋,這篇論文主要由地波的角度來說明地波環境背景強度波動的變化情形,由屏東動態式電離層觀測儀加上環形天線所觀測到的地波資料,選出周圍特定調幅站台的頻率,並以大氣環境模式(Weather Research and Forecasting, WRF)得到大氣環境資料,藉由地波資料的強度變化與大氣環境變化的相對關係,對應到於地波理論中的大氣波,判斷其合理性,並說明與大氣環境變化的關係。;When we observe the sky-wave data by dynasonde, we find that observation data has some period during one day. We always says that the reason is the difference of electronic density. But when we find the some problem in the ground-wave, the reason as same as sky-wave. In this thesis, we will explain the variation caused by the background surrounding oscillation with ground-wave. The purpose of thesis is to use the ground-wave data measured by the circle antenna compare with the atmospheric data observed by WRF model.
    Appears in Collections:[太空科學研究所 ] 博碩士論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML337View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明