許多科學家利用各種不同之儀器，觀測電離層赤道異常區的不規則體。然解有利用兩種以上的儀器做觀測與比對。本論文是用電離層探測儀和全球定位系統地面接收站研究在台灣地區（位於赤道異常區）太陽活動極大期與極小期的散狀F層和相位擾亂。除了介紹探測儀器－電離層探測儀和全球定位系統與散狀F層和相位擾亂的計算方式之外，將分別依照不同年份比對散狀F層和相位擾亂的資料，以及更進一步交叉比對兩者之間的關係。研究結果顯示在太陽活動極小期與極大期期間，不同特徵的散狀F層，其月變化分佈不同。另外，全球定位系統相位擾亂的程度在不同太陽活動性的月變化分佈也不同。而依電離層散狀F層和全球定位系統相位擾亂的比較結果顯示，頻率散狀F層與相位擾亂的關連較虛高散狀F層低。

There are many scientists have use many instruments to research the equatorial anomaly crest zone and analyze these data where they get. Because of the differentiation of instruments, the data get from them also have many differentiation. Therefore, using two kind of instruments to observe can provide detailed and overall views of this zone. It will introduce the calculation of phase fluctuation in this paper and compare different years'' result.

參 考 文 獻
Aarons, J., M. Medillo, and R. Yantosca, GPS phase fluctuations in the equatorial region during the MISETA 1994 campaign J. Geophys. Res., 101, 26,851-26,862, 1996.
Basu, S., K. M. Groves, J. M. Quinn, P. Doherty, Acomparison of TEC fluctuation and scintillations at Ascension Island, J. Atmos. Terr. Phys ., 61, 1219-1226, 1999.
Bowman, G. G., A comparison of nighttime TID characteristics between equatorial-ionospheric-anomaly crest and midlatitude regions, related to spread F occurrence, J. Geophys. Res., 106, 1761-1769, 2001.
Booker, H. G. and H. W. Wells, Scattering of radio waves by theF-region of the ionosphere, J. Geophys. Res., 43, 249, 1938.
Huang, C. Y., W. J. Burke, J. S. Machuzak, L. C. Gentile, and P. J. Sultan, DMSP observations of equatorial plasma bubbles in the topside ionosphere near solar maximum, J. Geophys. Res., 106, 8131-8142, 2001.
Chou, S. Y., and F. S. Kuo, A numerical study of the wind field effect on the growth and observability of equatorial spread F, J. Geophys. Res., 101, 17,137-17,149, 1996.
Davies, K., Ionospheric Radio, 580 pp., Peter Peregrinus Ltd, London, 1990.
Haines, D. M., A portable ionosonde using coherent spread-spectrum waveforms for remote sensing of the ionosphere, D. Eng. Thesis, Univ. Mass. Lowell, 1994.
Hofmann-Wellenhof, B., H. Lichtenegger, and J. Collins, GPS Theory and Practice, 2nd version, Springer-Verlag, Wien, New York, 1992.
Huang, Y. N., K Cheng and W. T. Huang, Seasonal and solar cycle variations of spread F at the equatorial Anomaly crest zone, J. Geomag. Geoelectr., 39, 639-657, 1987.
KEL AEROSPACE, IPS – 42 TECHNICAL MANUAL, KEL AEROSPACE PTY. LTD, August 1989.
Kelley, M. C., G. Haerendel, H. Kraaler, A. Valenzuela, B.B. Balsley, D.A. Carter, W.L. Ecklund, C.W. Carlson, B. Hausler, and R. Torbert, Evidence for a rayleigh-taylor type instability and upwelling of depleted density regions during equatorial spread F, Geophys. Res. Lett., 3, 448-450, 1976.
Kelly, T., Preliminary instructions for turning on, setting up, and initial testing of IPS-42 ionosonde, KEL Aerospace PTY. LTD., Australia, 1981.
Kelley, M. C., The Earth''s Ionosphere, 487 pp., Academic Press, SanDiego, 1989.
McClure, J. P., W. B. Hanson, and J. H. Hoffman, Plasma bubbles and irregularities in the equatorial ionosphere, J. Geophys. Res., 82, 2650-2656, 1977.
Medillo, Michael., B. Lin, J. Aarons, The application of GPS observations to equatorial aeronomy, Radio Sci., 35, 885-904, 2000.
Pi, X., A. J. Mannucci, U. J. Lindqwister, and C. M. Ho, Monitoring ofglobal ionospheric irregularities using the worldwide GPS network, Geophys. Res. Lett., 24, 2283-2286, 1997.
Reinisch, B. W., Modern Ionosondes, in Modern Ionospheric Science, edit by H. Kohl, R. Rüster and K. Schlegel, EGS, Katlenburg-Lindau, 1996.
Shan, S. J., J. Y. Liu, F. S. Kuo, C. C. Liu, and H. F. Tsai, GPS phase fluctuations observed along the American secter during low irreqularity activity months of 1997-2000, Earth Planets Space, 54, 141-152, 2002.
Tsai, H. F., and J. Y. Liu, Ionospheric total electron content response to solar eclipses, J. Geophys. Res., 104, 12657, 1999.
Tsunoda, R. T., Control of the seasonal and longitudinal occurrence of equatorial scintillations by the longitudinal gradient in integrated E region Pedersen conductivity, J. Geophys. Res., 90, 447-456, 1985.
Whalen, J. A., Equatorial bubbles observed at the north and south anomaly crests: Dependence on season, local time, and dip latitude, Radio Sci., 32, 1559-1566, 1997.
Woodman, R. F., and C. L. Hoz, Radar observations of F regionequatorial irregularities, J. Geophys. Res., 81, 5447-5466, 1976.
Zalesak, S. T., S. L. Ossakow, and P. K. Chaturvedi, Nonlinear equatorial spread F: The effect of neutral winds and background Pedersen conductivity, J. Geophys. Res., 87, 151-166, 1982.
黃鐘洺, 電波傳播, 聯經出版公司﹐1978.