高頻地波雷達風(fēng)速直接反演的經(jīng)驗?zāi)Ｐ?/h2>
doi: 10.11999/JEIT140850
基金項目:
國家自然科學(xué)基金重點項目(61032011)和中國博士后科學(xué)基金(2013M531559)資助課題
基金項目:
國家自然科學(xué)基金重點項目(61032011)和中國博士后科學(xué)基金(2013M531559)資助課題
An Empirical Model for Wind Speed Inversion Directly from High Frequency Surface Wave Radar Sea Echo
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摘要: 利用風(fēng)浪經(jīng)驗?zāi)Ｐ蛷母哳l地波雷達(HFSWR)的回波譜數(shù)據(jù)中反演風(fēng)速需要有效波高等先驗信息，因此風(fēng)速的反演受有效波高反演精度的影響。該文基于風(fēng)浪經(jīng)驗?zāi)Ｐ?，利用風(fēng)速和高頻地波雷達海面回波二階譜與一階譜能量之比的關(guān)系，發(fā)展了無需波高信息的風(fēng)速直接反演的經(jīng)驗?zāi)Ｐ汀L(fēng)速反演經(jīng)驗?zāi)Ｐ蛻?yīng)用到高頻地波雷達風(fēng)速的反演中，對兩部不同頻率的雷達在不同海域獲得的數(shù)據(jù)進行了比較分析，結(jié)果表明，該文中采用的經(jīng)驗?zāi)Ｐ湍軌蛴行У貙︼L(fēng)速進行反演，其中三參數(shù)模型的結(jié)果略好于雙參數(shù)模型。
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關(guān)鍵詞:
- 高頻地波雷達 /
- 風(fēng)速反演 /
- 經(jīng)驗?zāi)Ｐ?/a>
Abstract: The information of the significant wave height is needed in the wind speed inversion from the sea echo of High Frequency Surface Wave Radar (HFSWR) by using the empirical model of wind waves. Therefore, the accuracy of the significant wave height has an effect on the wind speed inversion. Based on the empirical model of wind waves, a wind speed inversion empirical model for wind retrieval without the information of wave height is developed, which uses the relationship between the wind speed and ratio of second-order to first-order spectrum energies. The inversion model is applied to the wind speed extraction. And the data obtained from two radars with different frequency in different detecting area are analyzed. The results show that the proposed model can be used to extract the wind speed from the HFSWR sea echo and the results of which three-parameter model are better than the two-parameter model. -
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