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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Retrieval of the Ocean Skin Temperature Profiles From Measurements of Infrared Hyperspectral Radiometers—Part I: Derivation of an Algorithm
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Retrieval of the Ocean Skin Temperature Profiles From Measurements of Infrared Hyperspectral Radiometers—Part I: Derivation of an Algorithm

机译：从红外高光谱辐射计的测量中反演海洋皮肤温度曲线-第一部分：算法的推导

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摘要

The retrieval of vertical profiles of the sea surface temperature through the electromagnetic and thermal skin layers is demonstrated. The inversion equation applied to the high-resolution radiance spectra measurements obtained from hyperspectral infrared spectrometers is introduced and is known to be nonlinear and ill-conditioned. To constrain the solution and reduce the errors in this ill-conditioned retrieval problem, the truncated singular value decomposition regularization technique is adopted. This technique's feasibility is demonstrated on synthetic data with and without the addition of noise. Results sometimes include an unphysical temperature inversion in the solution which was avoided by iteratively adjusting the lower boundary condition. The presence of noise required an additional step of averaging the radiance spectrum into 11 wavenumber intervals to solve the issue of an overconstrained problem and reduce the errors involved.
机译：演示了通过电磁和热皮层对海表温度垂直剖面的检索。介绍了适用于从高光谱红外光谱仪获得的高分辨率辐射光谱测量值的反演方程，该方程是非线性的且条件恶劣。为了约束该解决方案并减少该病态检索问题中的错误，采用了截断奇异值分解正则化技术。在添加和不添加噪声的情况下，在合成数据上证明了该技术的可行性。结果有时包括溶液中出现非自然的温度反转，这可以通过迭代地调整下边界条件来避免。噪声的存在要求将辐射光谱平均为11个波数间隔的附加步骤，以解决过度约束的问题并减少所涉及的误差。

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