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Swell parameters retrieval using ALOS/PALSAR data

机译:使用ALOS / PALSAR数据检索膨胀参数

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We have developed retrieval methods for swell parameters such as wave height, wavelength, and wave propagation direction from images of ALOS/PALSAR taken over coastal seas around Japan. The retrieval methods for wavelength and wave direction used the PALSAR image spectrum. Using the coupling swell spectra and the PALSAR image spectra, an empirical L-band modulation transfer function (MTFL-band) was obtained for the wave height retrieval through linear regression analysis. A comparison between SAR-derived and in situ wave parameters showed close agreement. For the wave direction, the bias, root mean-square error (RMSE) and correlation coefficient were 1.3°, 15.5° and 0.94, respectively. For the wavelength, the bias, RMSE and correlation coefficient were 10.4 m, 18.3 m and 0.93, respectively. These results demonstrate that the L-band SAR imaging mechanism for swells is mostly linear. For the wave height, the bias, RMSE and correlation coefficient were 0.08 m, 0.30 m and 0.80, respectively.
机译:我们已经开发了从日本沿海海沿海地区的Alos / Palsar的图像诸如波高,波长和波传播方向的膨胀参数的检索方法。用于波长和波长方向的检索方法使用了PALSAR图像谱。使用耦合膨胀光谱和PALSAR图像光谱,通过线性回归分析获得了波高检索的经验L波段调制传递函数(MTF L波段)。 SAR导出和原位波参数之间的比较显示了密切的协议。对于波方向,偏置,均方根误差(RMSE)和相关系数分别为1.3°,15.5°和0.94。对于波长,偏差,RMSE和相关系数分别为10.4M,18.3米和0.93。这些结果表明,用于膨胀的L波段SAR成像机构主要是线性的。对于波高,偏差,RMSE和相关系数分别为0.08米,0.30米和0.80。

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