基于PSF参考模型的星敏感器单粒子效应在轨校正方法

为了提高星敏感器在遭受单粒子效应打击情况下的质心提取精度，提出了一种基于点扩散函数参考模型的在轨校正方法。通过构建星点参考模型及残差校正，该方法能有效去除单粒子噪声，校正噪声星点形态，降低星点质心定位误差。与传统去噪算法相比，该方法能在有效去噪的同时保护星点能量不被破坏。通过仿真实验验证了该算法抗单粒子效应的有效性，通过对比实验验证了该算法相比传统算法的优越性。

An On-orbit Correction Method for Star Sensor Under Single Event Effect Based on PSF Reference Model

In order to improve the accuracy of star centroid extraction of star sensor under single event effect condition, an on-orbit correction method based on PSF reference model was proposed. With the construction of star reference model and residual image correction, the proposed method could effectively accomplish single event effect noise elimination and star shape correction, which reduced star centroid error. Compared with existing methods, the proposed method could maintain the energy of stars while denoising. A simulation experiment certificated the effectiveness of the proposed method. A contrast experiment showed the superiority of the proposed method compared with other denoising algorithms.