论文标题
自动检测和校正算法，用于SMFT/HSOS纵向磁力图中的磁饱和度
Automatic Detection and Correction Algorithms for Magnetic Saturation in the SMFT/HSOS longitudinal Magnetograms
论文作者
论文摘要
当测量在单波长点上执行并采用线性校准时，纵向磁场通常会遭受强磁场区域的饱和效应。在这项研究中，我们开发了一种方法，可以判断太阳能磁场望远镜（SMFT）观察到的Stokes $ v/i $中饱和的阈值并自动校正。该过程是，首先对Stokes $ v/i $ \ textit {VS} $ i/i_ {m {m} $（$ i_ {M} $是Stokes $ i $）曲线的最大值，以估算饱和度的阈值，然后重新构造Stokes $ v/I $ in Stort fortation fortateation fortation fortation fortation fortation。通过与Helioseissic和磁成像仪（HMI）获得的磁图进行比较，该算法被证明是有效的。在175个活动区域中，饱和的准确检测率和校正分别为$ \ sim $ 99.4 \％\％和$ \ sim $ 88 \％。讨论了该算法的优势和缺点。
longitudinal magnetic field often suffers the saturation effect in strong magnetic field region when the measurement performs in a single-wavelength point and linear calibration is adopted. In this study, we develop a method that can judge the threshold of saturation in Stokes $V/I$ observed by the Solar Magnetic Field Telescope (SMFT) and correct for it automatically. The procedure is that first perform the second-order polynomial fit to the Stokes $V/I$ \textit{vs} $I/I_{m}$ ($I_{m}$ is the maximum value of Stokes $I$) curve to estimate the threshold of saturation, then reconstruct Stokes $V/I$ in strong field region to correct for saturation. The algorithm is proved to be effective by comparing with the magnetograms obtained by the Helioseismic and Magnetic Imager (HMI). The accurate rate of detection and correction for saturation is $\sim$99.4\% and $\sim$88\% respectively among 175 active regions. The advantages and disadvantages of the algorithm are discussed.
