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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/25443

Title: Nonlinear Influences on Ocean Waves Observed by X-band Radar
Authors: Li-Chung Wu;Dong-Jiing Doong;Beng-Chun Lee;Laurence Zsu-Hsin Chuang;Chia Chuen Kao
Contributors: NTOU:Department of Marine Environmental Informatics
Keywords: Radar backscatter;Nonlinearity;Bispectral analysis
Date: 2008-01
Issue Date: 2011-10-20T08:23:14Z
Publisher: Marine Geophysical Researches
Abstract: abstract:The purpose of this study is to discuss the influence of signal nonlinearity upon X-band radar observations. A method for estimating the degree of nonlinearity by bispectral analysis was applied and discussed. We found that bispectral analyses from spatial radar backscatter series are similar to results obtained from water level time series. In addition, the average nonlinear degree from radar backscatter is related to wind speed. The accuracy of wave observations derived by consideration of the nonlinear effect from radar backscatter was also investigated. The estimated error in wave height from the radar data is also related to the degree of nonlinearity. In order to improve accuracy, the modulation transfer function method was applied in order to eliminate the influence of nonlinearity.
Relation: 29(1), pp.43-50
URI: http://ntour.ntou.edu.tw/handle/987654321/25443
Appears in Collections:[海洋環境資訊系] 期刊論文

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