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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 黃克寧(Keh-Ning Huang) | |
dc.contributor.author | Yu-Lin Chen | en |
dc.contributor.author | 陳育霖 | zh_TW |
dc.date.accessioned | 2021-05-20T20:41:24Z | - |
dc.date.available | 2011-07-24 | |
dc.date.available | 2021-05-20T20:41:24Z | - |
dc.date.copyright | 2008-07-24 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-22 | |
dc.identifier.citation | Asaki, Y., Saito, M., Kawabe, R., Morita, K.-I., Sasao, T. Radio Science, 31, 1615, 1996
Asaki,Y., Shibata, K. M., Kawabe, R., Roh, D.G., Saito, M., Morita, K.-I., and Sasao, T., Radio Science, 33, 1297, 1998 Asaki, Y., Saito, M., Kawabe, R., Morita, K. I., Tamura,Y. and Baltasar, V.-V., ALMA Memo. No. 535, 2005 Carilli, C. L. and Holdaway, M., ALMA Memo No.262, 1999 Carilli, C. L., Carlstrom, J. E., and Holdaway, M. A., in Synthesis Imaging in Radio Astronomy II, ed. G. B. Taylor, C. L. Carilli, and R. A. Perley, Astronomical Society of the Pacific Conference Series, Vol. 180, 565, 1998 Crane, R. P., in Methods of experimental physics, vol. 12B: Radio Telescopes, ed. M. L. Meekes (Academic Press: New York), 186, 1976 Carrasco, E. and Marc, M. S., RevMexAA (Serie de Conferencias), 19, 103, 2003 Hess, S. L., Introduction to Theoretical Meteorology, 1959 Ho. P., Moran, J. and Lo, K. Y., ApJ, 616, L1, 2004 Holdaway, M., ALMA Memo No.491, 2004 Humphreys, W. J., Physics of the Air, 3rd ed., (McGraw-Hill: New York), 1940 Jackson, J. D., Classical Electrodynamics, 3rd ed. (John Wiley and Sons: New York), 1998 Léna, P., Lebrun, F., Mignard, Observational Astrophysics 2nd ed. (Springer- Verlag, Berlin), 1998 Liebe, H. J., International Journal of Infrared and Millimeter Waves, 10, 6, 1989 McKinnon, M. M., MMA Memo No.49, 1988 Reber, E. E., and Swope, J. R., J. Appl. Met., 11, 1322, 1972 Smith, E. K., Jr., and Weintraub, S., Proc. IRE (Inst. Radio. Eng.), 41, 1035, 1953 Sutton, E. C., and Hueckstaedt, R. M., A&A Supp., 119, 559, 1997 Tatarskii, V.I., Wave Propagation in Turbulent Media (Wiley and Sons: New York), 1961 Taylor, G. B., Carilli,C. L., and Perley, R. A., Synthesis Imaging in Radio Astronomy II, Astronomical Society of the Pacific Conference Series, Vol. 180, 1998 Taylor, G. I., Proc. R. Soc. London Set A, 164, 476, 1938 Garratt, J. R., in The Atmospheric Boundary Layer (Cambridge University Press: Cambridge), 11, 1992 Thompson A, R., Moran J. M., & Swenson G. W., Jr., Interferometry and Synthesis in Radio Astronomy, (Wiley-Interscience), 1986 Thompson, R. D., Atmospheric Processes and Systems (Routledge: New York), 1998 Tornikoski, M., Valtaoja, E., Teräsranta, H., Karlamaa, K., Lainela, M., Nilsson, K., Kotilainen, J., Laine, S., Lähteenmäki, A., Knee, L. B. G. & Botti, L. C. L., A&AS, 116, 157, 1996 Wiedner, M., 183 GHz Radiometer for CSO-JCMT Interferometer, Doctoral Thesis (Cambridge/MRAO), 1998 Wills, D., & Wills. B. J., Nature, 289, 384, 1981 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/9788 | - |
dc.description.abstract | 毫米(millimeter)與次毫米波(Submillimeter)提供了宇宙中低溫塵埃輻射與許多分子光譜資訊,是地面天文觀測最後的波段。建造當中的新一代地表最大次毫米波干涉儀(the Atacama Large Millimeter and submillimeter Array,簡稱ALMA)是有史以來最大的地面望遠鏡興建計畫。毫米和次毫米波的干涉影像相位起伏擾動主要都是受到對流層水汽分布的影響。為了減低觀測影像相位擾動,我們使用夏威夷白山(Mauna Kea)上的次毫米波干涉陣列(Submillimeter Array,簡稱SMA)的觀測數據來發展相位補償修正策略,以作為最大次毫米波干涉儀ALMA當中的短基線密集陣列(the Atacama Compact Array,簡稱ACA)影像修正用。運用內插和外插的演算技巧來比較與了解影像相位補償修正的有效程度。 | zh_TW |
dc.description.abstract | Millimeter and submillimeter astronomers pursue science and technology development with ground-based millimeter/submillimeter interferometers through the opaque atmosphere. This waveband provides a unique window on cold dust emission and highly excited lines from molecules and ions. The next generation interferometer at this waveband is the Atacama Large Millimeter and submillimeter Array (ALMA) with the Atacama Compact Array (ACA). The interferometers at this waveband are, however, highly affected by the water vapor induced refraction, which results as phase fluctuations. To reduce the phase fluctuation, we conducted a phase correction scheme using the observing data of the Submillimeter Array (SMA) for the ACA. The phase correction schemes, interpolation and extrapolation, are studied to know how effective these scheme are.
Three simultaneously detected antenna phases form a plane of a wave front, and this phase screen are used for the interpolation and extrapolation. The interpolation scheme can apparently obtain improved results, while the extrapolation scheme often does not. There are unexpectedly large phase fluctuations showed up only around the 60 meters away from the reference antennas. This can be explained with considering the frozen phase screen. It may be explained more clearly after more careful investigation of the wind aloft and the temporal and spatial turbulent structure on the summit of Mauna Kea. | en |
dc.description.provenance | Made available in DSpace on 2021-05-20T20:41:24Z (GMT). No. of bitstreams: 1 ntu-97-P94222004-1.pdf: 1875737 bytes, checksum: 21d5c468c81a9a43c777c7a7cb7e70c5 (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | Content
List of Figures……………………………………………………………ii List of Tables……………………………………………………………iv Acknowlegements…………………………………………………v Abstract…………………………………………………………vi Chapter 1. Introduction……………………………………1 Chapter 2. Theory……………………………………………4 2.1 Basic Principle of Millimeter and Submillimeter Interferometry…………4 2.2 Mean Tropospheric Effect on Interferometric Phase……6 2.3 Phase Change in the Atmosphere…………………………………………13 Chapter 3. Measurements and Data Reduction………………………………16 3.1 Measurements…………………………………………………16 3.2 Data Reduction………………………………………………………………20 Chapter 4. Results…………………………………………………………………22 4.1 Comparisons between Observed, Interpolated, Extrapolated, and Residual Phase Fluctuations……22 4.2 Re-Define the Phase…………………………………………………………25 Chapter 5. Discussion……………………………………………………40 5.1 Interpolation and Extrapolation……………………………………………40 5.2 Extraordinary 60-meter Fluctuations………………………………………42 Chapter 6. Conclusion…………………………………………………………49 Lists of References……………………………………………………………51 | |
dc.language.iso | en | |
dc.title | 次毫米波干涉陣列影像相位修正策略 | zh_TW |
dc.title | Phase Compensation Scheme for ACA Using SMA | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.coadvisor | 松下?樹(Satoki Matsushita) | |
dc.contributor.oralexamcommittee | 高桑繁久(Shigehisa Takakuwa) | |
dc.subject.keyword | 次毫米波,次毫米波干涉儀,干涉相位, | zh_TW |
dc.subject.keyword | Submillimeter,the ALMA,SMA,interferometric phase, | en |
dc.relation.page | 51 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2008-07-24 | |
dc.contributor.author-college | 理學院 | zh_TW |
dc.contributor.author-dept | 物理研究所 | zh_TW |
顯示於系所單位: | 物理學系 |
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