期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
SAR Azimuth Cut-off to Estimate Wind Speed under High Wind Regimes
1
作者 Valeria CORCIONE Ferdinando NUNZIATA +3 位作者 Marcos PORTABELLA Giuseppe GRIECO Xiaofeng YANG Maurizio MIGLIACCIO 《Journal of Geodesy and Geoinformation Science》 2021年第1期30-37,共8页
In this study,the azimuth cut-off method,typically used for SAR moderate wind speed estimation purposes,is analyzed under high wind regimes.Firstly,the importance of the pixel spacing,the size of the boxes selected fo... In this study,the azimuth cut-off method,typically used for SAR moderate wind speed estimation purposes,is analyzed under high wind regimes.Firstly,the importance of the pixel spacing,the size of the boxes selected for Synthetic Aperture Radar(SAR)image partitioning and the image texture in terms of homogeneities are discussed by considering their influence on the azimuth cut-off(λc)estimation.Secondly,a quality control analysis of the reliability ofλc is carried out by evaluating the distance between the autocorrelation functions(ACF)and their correspondent fittings.This analysis points out the importance of filtering out the unreliable and unfeasibleλc values in order to improve the wind speed estimation.The quality control procedure is based on a x2 test,applied on a large Sentinel-1 A dataset.The soundness of the test is verified by an increment in terms of correlation betweenλc estimations and wind speed values.This approach is,then,applied under high wind regimes,i.e.,tropical cyclones. 展开更多
关键词 SAR wind speed azimuth cut-off significant wave height
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部