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.

Appleton E. V., "The anomalous equatorial belt in the F-layer," J. Atoms. Terr. Phys. 5, 349, 1954.
Austen, J. R., S. J. Franke, and C. H. Liu, "Ionospheric imaging using computerized tomography," Radio Science, vol. 23, no. 3, pp. 299-307, 1988.
Bracewell, R. N., "Strip integration in radio astronomy," Aust. J. Phys., vol. 9, pp. 198-217, 1956.
Davies, K., "Ionospheric radio," IEEE Waves Series, Peter Peregrinus Ltd., 31, 1989.
Deans, S. R., "The Radon Transform and Some of Its Applications," John Wiley, New York, 1983.
Hounfield, G. N., "A method of and apparatus for examination of a body by radiation such as x-ray or gamma radiation," British Patent No. 1283915, 1972.
Kak, A. C. and M. Slaney. "Principles of Computerized Tomographic Imaging, " IEEE press, New York, 1988.
Kak, A. C. and M. Slaney. "Principles of Computerized Tomographic Imaging, " IEEE press, New York, 1988.
Kak, A. C. and M. Slaney. "Principles of Computerized Tomographic Imaging, " IEEE press, New York, 1988.
Leipzing, Math. --- Phys. Kl., 69, pp. 262-267. 1917.
Ratcliffe, J. A., "An Introduction to the Ionosphere and Magnetosphere, " Cambridge University Press, London, 1972.
Raymund, T. D., J. R. Austen, S. J. Franke, C. H. Liu, J. A. Klobuchar and J. Stalker, "Application of computerized tomography to investigation of ionospheric structures," Radio
Sci., vol. 25, 771-789. 1990.
Rawer, K., "Wave propagation in the ionosphere, " Kluwer Academic Publishers, Dordrecht, 1993.
Special Issue, "Computerized Ionospheric Tomography," Int. J. Imag. Syst. Tech., 1990.
Special Issue, "Computerized Ionospheric Tomography, " H. R. Na(Guest Editor), Int. J. Imag. Syst. Tech., 1994.
Yeh, K. C. and T. D. Raymund, "Limitations of ionospheric imaging by tomography," Radio Sci., vol. 26, 1361-1380, 1991.
王承就, ''沿台灣經度低緯電離層電腦斷層資料反演之研究,'' 中央大學太空科學研究所碩士論文, 1996.
蔡宏利, ''沿台灣經度低緯電離層電腦斷層掃描的研究,'' 中山大學電機工程研究所碩士論文, 1995.
黃啟瑞, ''發展與應用電腦斷層掃描技術以研究赤道異常區之電離層,''中央大學電機工程研究所博士論文, 1997.