Identification and localization of layers in the ionosphere using the eikonal and amplitude of radio occultation signals

NCU Institutional Repository > 研究中心 > 太空及遙測研究中心 > 期刊論文 > Item 987654321/101054

請使用永久網址來引用或連結此文件: https://ir.lib.ncu.edu.tw/handle/987654321/101054

題名:	Identification and localization of layers in the ionosphere using the eikonal and amplitude of radio occultation signals
作者:	劉說安;Pavelyev, A. G.;Liou, Y. A.;Zhang, K.;Wang, C. S.;Wickert, J.;Schmidt, T.;Gubenko, V. N.;Pavelyev, A. A.;Kuleshov, Y.
貢獻者:	太空及遙測研究中心
關鍵詞:	Atmosphere;Comparative analysis;Internal waves;Ionosphere;Radio waves;Refractivity;Upper atmosphere;Wave propagation;Wind shear
日期:	2012-01-12
上傳時間:	2026-04-21 14:22:16 (UTC+8)
出版者:	Copernicus Gesellschaft mbH;Katlenburg-Lindau: Copernicus Publications
摘要:	摘要： By using the CHAllenge Minisatellite Payload (CHAMP) radio occultation (RO) data, a description of different types of the ionospheric impacts on the RO signals at the altitudes 30–90 km of the RO ray perigee is given and compared with the results of measurements obtained earlier in the satellite-to-Earth communication link at frequency 1.5415 GHz. An analytical model is introduced for describing propagation of radio waves in a stratified medium consisting of sectors with spherically symmetric refractivity distribution. This model gives analytical expressions for the phase, bending angle, and refractive attenuation of radio waves and is applied to the analysis of radio wave propagation phenomena along an extended path including the atmosphere and two parts of the ionosphere. The model explains significant amplitude and phase variations at altitudes 30–90 km of the RO ray perigee and attributes them to inclined ionospheric layers. Based on this analytical model, an innovative technique is introduced to locate layers in the atmosphere and ionosphere. A necessary and sufficient criterion is obtained for a layer to be located at the RO ray perigee. This criterion gives both qualitative and quantitative estimation of the displacement of an ionospheric and/or atmospheric layer from the RO ray perigee. This is important, in particular, for determining the location of wind shears and directions of the internal wave propagation in the lower ionosphere, and, possibly, in the atmosphere. 出版者： Katlenburg-Lindau: Copernicus Publications 出版日期： 2012-01-01 出處： Atmospheric measurement techniques, 2012-01, Vol.5 (1), p.1-16 資源來源： Publicly available content database 版權： COPYRIGHT 2012 Copernicus GmbH 版權： Copyright Copernicus GmbH 2012 識別號： ISSN: 1867-8548 識別號： ISSN: 1867-1381 識別號： EISSN: 1867-8548 識別號： DOI: 10.5194/amt-5-1-2012
顯示於類別:	[太空及遙測研究中心] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	9	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing

資料載入中.....