Due to the low spatial resolution of sea surface temperature (T_S) retrieval by real aperture microwave radiometers, in this study, an iterative retrieval method that minimizes the differences between brightness temperature (T_B) measured and modeled was used to retrieve sea surface temperature with a one-dimensional synthetic aperture microwave radiometer, temporarily named 1D-SAMR. Regarding the configuration of the radiometer, an angular resolution of 0.43° was reached by theoretical calculation. Experiments on sea surface temperature retrieval were carried out with ideal parameters; the results show that the main factors affecting the retrieval accuracy of sea surface temperature are the accuracy of radiometer calibration and the precision of auxiliary geophysical parameters. In the case of no auxiliary parameter errors, the greatest error in retrieved sea surface temperature is obtained at low T_S scene (i.e., 0.710 6 K for the incidence angle of 35° under the radiometer calibration accuracy of 0.5 K). While errors on auxiliary parameters are assumed to follow a Gaussian distribution, the greatest error on retrieved sea surface temperature was 1.330 5 K at an incidence angle of 65° in poorly known sea surface wind speed (W) (the error on W of 1.0 m/s) over high W scene, for the radiometer calibration accuracy of 0.5 K.

中文翻译：

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一维合成孔径微波辐射计1D-SAMR对海面温度反演的研究

由于海洋表面温度的低空间分辨率（Ť_小号）由实孔径微波辐射计的检索，在这项研究中，一种迭代检索方法，该方法（亮度温度之间最小化的差异Ť_乙测量并建模）用于一维合成孔径微波辐射计（暂时称为1D-SAMR）检索海面温度。关于辐射计的配置，通过理论计算达到了0.43°的角分辨率。在理想参数下进行了海表温度反演实验。结果表明，影响海表温度反演精度的主要因素是辐射计校准精度和辅助地球物理参数精度。在没有辅助参数误差的情况下，在低T _S时获得最大的海面温度误差。场景（即在辐射计校准精度为0.5 K时，入射角为35°时，入射角为0.710 6 K）。尽管假定在辅助参数中的差错遵循高斯分布，对检索到的海表面温度的最大误差是在65的入射角度在知之甚少海面风速（1.330 5 K. w ^）（误差上W¯¯为1.0μm / s）在高W场景下，辐射计的校准精度为0.5K。