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研究生:林伯勳
研究生(外文):Pp-Hsun Lin
論文名稱:雷達海洋回波頻譜之模擬
指導教授:朱延祥
學位類別:碩士
校院名稱:國立中央大學
系所名稱:太空科學研究所
學門:自然科學學門
學類:天文及太空科學學類
論文種類:學術論文
論文出版年:2019
畢業學年度:107
語文別:中文
論文頁數:89
中文關鍵詞:海洋回波模擬
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透過Barrick的一階雷達散射截面理論方程式與二階雷達截面理論方程式來模擬海洋回波頻譜,過程中利用歸一化參數與變數變換,並用牛頓法求得在限制條件下最佳的變數解,以利我們透過理論方程式模擬頻譜,並嘗試與在宜蘭大福的特高頻(VHF)雷達觀測資料做比對。
引用Phillips模型,改變風向參數,探討不同風向對頻譜的影響,並且可利用正、負布拉格峰值的比值反演風向;引用Pierson-Moskowitz(P-M)模型,改變風速參數,探討不同風速對頻譜的影響,得到隨風速越大,二階波回波功率也隨之增加的關係。
最後,透過誤差函數(Error function)擬合風速與二階波回波功率兩者變化關係,並統計不同風向情況下,擬合曲線的變化趨勢,並且透過觀測資料之二階波能量反演風速。
The Phillips model is used to change the wind direction parameters, to explore the influence of different wind directions on the spectrum, and the ratio of positive and negative Bragg peaks can be used to invert the wind direction. The Pierson-Moskowitz (PM) model is used to change the wind speed parameters and explore the influence of different wind speeds on the spectrum. The second-order wave echo power increases as the wind speed.
Finally, the relationship between the wind speed and the second-order wave echo power is fitted by the error function, and the variation trend of the curve is calculated under different wind directions and the wind speed is inverted by the second-order wave energy of the observed data.
摘要 i
Abstract ii
誌謝 iii
目錄 iv
圖表目錄 vii
第一章 前言 1
1.1研究動機 1
1.2測海雷達研究歷史 1
1.3 特高頻(VHF)測海雷達介紹 3
第二章 理論基礎 10
2.1海浪成因 10
2.2電磁波散射理論 12
2.3一階雷達截面理論方程式 15
2.4二階雷達截面理論方程式 15
2.5海洋波數空間分布 18
2.5.1情況一:m=m' 18
2.5.2情況二:m≠m' 19
2.6海洋波頻譜模型 21
2.6.1 Phillips模型 21
2.6.2 Pierson-Moskowitz(P-M)模型 22
2.7雷達反演風向原理 24
2.8歸一化 26
2.9簡化二階雷達理論方程式 28
第三章 高頻雷達二階波海洋頻譜模擬 31
3.1耦合係數Γ 31
3.2二階波模擬 34
第四章 雷達資料處理 38
4.1回波資料處理 38
4.2 頻譜特性 40
第五章 模擬結果與討論 47
5.1海洋回波頻譜模擬結果 47
5.2不同風向對頻譜影響 48
5.2.1反演風向 51
5.3不同風速對頻譜影響 51
5.4二階波與風速之關係 55
5.5模擬結果與觀測資料比較 65
第六章 結論與未來展望 68
6.1結論 68
6.2未來展望 69
參考文獻 70
(1)B. C. Brock, "The Application of Taylor Weighting, Digital Phase Shifters, and Digital Attenuators to Phased-Array Antennas " Sandia National Laboratories, 2008
(2)B. Errasti-Alcala, W. Fuscaldo, P. Braca, G. Vivone, "Realistic extended target model for track before detect in maritime surveillance", Proc. MTS/IEEE OCEANS Conf., May 2015
(3)B. J. Lipa and D. E. Barrick, "Analysis methods for narrow-beam high-frequency radar sea echo," Tech. Rep. ERL 420-WPL 56,NOAA, Boulder, Colo., 1982
(4)C.C. Teague, J.F. Vesecky, and D.M. Fernandez, "Hf radar instruments, past to present. Oceanography, "10(2):40–44, 1997
(5)Chen J. S, Lai J. W, Chien H, Wang C. Y, Su C. L, Lin K. I., Chen M. Y, Chu Y H, "VHF radar observations of sea surface in the Northern Taiwan Strait, "Journal of Atmospheric and Oceanic Technology, Volume 36, Issue 2, p.297-315, 2019
(6)D. E. Barrick, and B. J. Lipa, "The second-order shallow-water hydrodynamic coupling coefficient in interpretation of HF radar sea echo," IEEE J, Oceanic Eng., 0E-11, in press, 1986
(7)D. E. Barrick, "FMCW radar signals and digital processing, " NOAA Tech. Rep., ERL 283-WPL26, 22 pp., 1973
(8)D. E. Barrick, "Remote Sensing of Sea State by Radar, " in V. E. Derr(ed.)Remote Sensing of the Troposphere, Ch. 12, U.S. Government Printing Office, Washington, D.C., 1972b
(9)D. Prandle, "The fine-structure of nearshore tidal and residual circulations revealed by h.f. radar surface current measurements," J. Phys. Oceanogr., 17(2):231–245, 1987
(10)D. M. Fernandez, H. C. Graber, J. D. Paduan, and D. E. Barrick,
"Mapping wind direction with HF radar, " Oceanography, 1997
(11)H. C. Graber, D. R. Thompson, and R. E. Carande, "Ocean surface features and currents measured with synthetic aperture radar interferometry and hf radar. J. Geophys. Res., " 101(C11):25,813–25,832,1996
(12)J. Burkardt, " The Truncated Normal Distribution. Department of Scientific Computing Website," Florida State University, 2014
(13)J. Harlan and T. Georges., "An empirical relation between ocean‐surface wind direction and the Bragg line ratio of HF radar sea echo spectra," J. Geophys. Res., 99:7971-7978, 1994
(14)JA, Stewart et al. , " Dynamic removal of replication protein A by Dna2 facilitates primer cleavage during Okazaki fragment processing in Saccharomyces cerevisiae. " J Biol Chem 283(46):31356-65, 2008
(15)K. W. Gurgel, H. H. Essen, and S. P. Kingsley. , " Hf radars: Physical limitations and recent developments.Coastal Engineering, " 37:201–218, 1999b
(16)L.K. Shay, H.C. Graber, D.B. Ross, and R.D. Chapman. , " Mesoscale ocean surface current structure detected by high-frequency radar. Journal of Atmospheric and Oceanic Technology, " 12(4):881–900, 1995
(17)O. M. Phillips, "The Dynamics of the Upper Ocean. " Cambridge University Press, Cambridge, England, 336 pp., 1977
(18)Tyson Hilmer, "Radar sensing of ocean wave heights", 2010
(19)Wang C. Y., Su C. L., Wu K. H, and Chu Y H, "Cross spectral analysis of CODAR-SeaSonde echoes from sea surface and ionosphere at Taiwan, " International Journal of Antennas and Propagation,vol. 2017, Article ID 1756761, 14 pages, 2017
(20)W. J. Pierson, and L. Moskowitz, " A proposed spectral form for fully developed wind seas based on the similarity theory of S. A. Kitaigorodskii, " J. Geophys. Res., 69(24), 5181-5190, 1964
(21)X. Shi, X. Xu, Z. Shi and Z. Tang, "Measurement of the Cross-Loop Antenna Patterns in High-Frequency Surface Wave Radar, " in IEEE Geoscience and Remote Sensing Letters, vol. 12, no. 6, pp.1272-1276, June 2015
(22)李雪,基於實際環境的高頻地波雷達威力範圍預估,哈爾濱大學,碩士論文,2013年
(23)范光龍,台灣附近的海域,科學月刊0221期,科學月刊雜誌社,1988 5月
(24)陳奇珍,海洋學(上),中央圖書供應社,1967年
(25)傅兆平,特高頻測海雷達回波分析與比對,國立中央大學,2017年
(26)黃泓偉,24 GHz 頻率調變連續波雷達系統之前端電路設計與整合,國立交通大學,2007年
(27)http://www.pengky.cn/bolangneng/bolangneng-gaishu/hailangneng.html
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