As the results show, when the excursion is little, the PSF obtained by Gauss function fitting is feasible.A baffle will reduce the error and improve the spatial resolution remarkably.

• 研究结果表明，在偏离量较小时，利用高斯拟合得到的中子针孔成像系统的PSF是可行的，而采用挡板可以很显著地减少拟合误差和提高其空间分辨率。