| DC 欄位 |
值 |
語言 |
| DC.contributor | 太空科學研究所 | zh_TW |
| DC.creator | 陳建智 | zh_TW |
| DC.creator | Jian-Jr Chen | en_US |
| dc.date.accessioned | 2000-7-5T07:39:07Z | |
| dc.date.available | 2000-7-5T07:39:07Z | |
| dc.date.issued | 2000 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=87227004 | |
| dc.contributor.department | 太空科學研究所 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 本研究是利用位於中緯度地區的中壢特高頻雷達，從1999年7月到2000年2月，以52MHz的發射頻率觀測3公尺左右結構的不規則體，針對所觀測的資料做分析，另外也分析1996年所觀測的資料，分析的內容包括：(1)利用雷達干涉法研究不規則體於空間中的漂移運動，(2)系統相位差的估計，(3)頻寬與平均都卜勒頻移的關係。另外亦提出以散塊漂移的理論來說明，在回波功率之高度-時間-強度(RTI)圖中呈線紋結構的準週期性回波(QP Echo)，是由場沿不規則體準週期性的漂入雷達體積所造成的現象。 | zh_TW |
| dc.description.abstract | Employing the Chung-Li 52MHz radar, the observations of meter-scale irregularities were carried out from July, 1999 to February, 2000. In addition, the analysis of data taken in 1996 was also included in this study. The analysis include: (1) using radar interferometer to research the drift motions of irregularities (2) the estimation of system phase difference (3) relationships between spectral widths and mean doppler shifts. Futhermore, propose a possible mechanism to explain the quasi-periodic(QP) echoes that present the striated structures in the RTI plot, which is the phenomenon caused by field aligned irregularities drift into radar volume quasi-periodically. | en_US |
| DC.subject | 電離層 | zh_TW |
| DC.subject | 不規則體 | zh_TW |
| DC.subject | VHF雷達 | zh_TW |
| DC.subject | 準週期性回波 | zh_TW |
| DC.subject | ionosphere | en_US |
| DC.subject | irregularity | en_US |
| DC.subject | VHF radar | en_US |
| DC.subject | quasi-periodic echo | en_US |
| DC.title | 梯度漂移不規則體之準週期性移動的研究 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |