三維電離層斷層掃描之模擬研究

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/5091

Title:	三維電離層斷層掃描之模擬研究
Authors:	董志聖;Chih-Sheng Tung
Contributors:	太空科學研究所
Keywords:	電離層;斷層掃描;模擬;ionosphere;tomography;simulation
Date:	2000-07-06
Issue Date:	2009-09-22 09:44:53 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	本篇論文進行三維電離層斷層掃描之模擬研究。以IRI-90電離層模型的白天及夜晚各一組資料作為原始資料，並以一個經度一個接收站來設計兩組不同的接收站位置。首先模擬衛星相位，並使用多站法由相位求得積分常數及斜向全電子含量，再利用MART演算法迭代得到電子濃度在三維空間中之分佈，最後將結果與原始資料作一比較，並探討其可能造成誤差的原因。　模擬結果發現以多站法求得之積分常數接近正確值，因此以多站法估計積分常數為一可行之方式。而電子濃度重建結果的誤差則包括接收站的數量的多寡、外插、原始資料的分佈、接收站的配置及衛星軌道與接收站的相對關係等。 This paper proceeds a simulation of three-dimensional computerized ionospheric tomography. We using IRI-90 model as initial electron density and choosing two sets of ground stations separated at different longitude location. The process is started from the phase simulation and estimate the initial phase and slant TEC, then using MART algorithm to reconstruct the three-dimensional images of ionospheric electron density. Comparisons of the tomographic images and the initial electron density form IRI-90 model is discussed in this paper.
Appears in Collections:	[Graduate Institute of Space Science] Department of Earth Sciences

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