國際高頻信號標觀測與無線電波電離層傳播研究;Hf Beacon Signal Observations and the Study of Wave Propagation in the Ionosphere

NCU Institutional Repository > 研究中心 > 太空及遙測研究中心 > 研究計畫 > Item 987654321/62415

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/62415

题名:	國際高頻信號標觀測與無線電波電離層傳播研究;Hf Beacon Signal Observations and the Study of Wave Propagation in the Ionosphere
作者:	蔡龍治
贡献者:	國立中央大學太空及遙測研究中心
关键词:	大氣科學;環境科學
日期:	2012-12-01
上传时间:	2014-03-17 11:32:16 (UTC+8)
出版者:	行政院國家科學委員會
摘要:	研究期間：10108~10207;Since 1979, the International Beacon Project sponsored jointly by the Northern California DX Foundation and the International Amateur Radio Union has independently built 18 stations transmitting HF beacons at the frequencies of 14.1，18.11，21.15，24.93, and 28.2 MHz. The project was proposed to correct the observation results by international amateur radio stations and to evaluate HF radio wave propagation in the ionosphere. The results can be used to study the ionosphere structure too. In 2004 and 2010, National Central University has built up two NOAA (National Oceanic and Atmospheric Administration) MF/HF radars, also referred as Dynasondes, at ChungLi (24.97°N, 121.19°E) and HuaLien (23.89°N, 121.55°E), separately, in Taiwan. The Dynasondes utilize an interferometric array (including four or eight receivers connected to different spaced dipole antennas) to receive ionospherically reflected signals and/or echoes and is a fully digital research ionosonde capable of providing high precision spatial and temporal ionospheric measurements. Further utilizing a pulse set defined by four pulses transmitted at two closely spaced frequencies, the measured parameters are the time-of-flight and sixteen or thirty-two complex-amplitudes from four or eight receivers. We propose to apply radar interferometry to improve measurements of incident/tilt angles, deduction of velocity estimates and wave parameters, and tracking of HF beacon signals. The further ray-tracing experiments can be used for the study of wave propagation in the ionosphere.
關聯:	財團法人國家實驗研究院科技政策研究與資訊中心
显示于类别:	[太空及遙測研究中心] 研究計畫

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	407	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....