Abstract We describe a technique of geometric and photometric corrections of high-resolution LROC NAC data at the level of NAC resolution. The technique does not exploit external DEMs, requiring solely LROC NAC images and LRO SPICE-kernels, i.e. a principle of self-orthorectification is realized. This significantly suppresses the topography influence on photometric data both in albedo and phase-ratio images. The proposed technique significantly expands the effectiveness of the phase-ratio method on the basis of LROC NAC data allowing the use of ratio components with similar illumination/observation (difference between solar azimuths is not more 30°) conditions not only exactly the same. The method also produces additional high-precision, high-resolution information about the topography of the lunar surface. We apply this to the area around a young 700 ​m crater (0.778°N, 132.95°W) located on the inner flank of the wall of the crater Hertzsprung S. We detect ejecta asymmetry around the crater, which shows that the impact creating the crater was oblique. We also found structures generated, perhaps, with wind-like processes during crater formation.

中文翻译：

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从 LROC NAC 图像中去除地形效应，适用于 HertzSPRUNS S 陨石坑的内侧面

摘要 我们描述了一种在 NAC 分辨率级别对高分辨率 LROC NAC 数据进行几何和光度校正的技术。该技术不利用外部 DEM，仅需要 LROC NAC 图像和 LRO SPICE 内核，即实现了自正射校正原理。这显着抑制了地形对反照率和相位比图像中光度数据的影响。所提出的技术显着扩展了基于 LROC NAC 数据的相位比方法的有效性，允许使用具有相似照明/观测（太阳方位角之间的差异不超过 30°）条件且不仅完全相同的比率分量。该方法还产生了关于月球表面地形的额外高精度、高分辨率信息。我们将此应用于位于 Hertzsprung S 陨石坑壁内侧的 700 米年轻陨石坑（0.778°N，132.95°W）周围的区域。我们检测到陨石坑周围的喷射物不对称，这表明撞击产生了火山口是倾斜的。我们还发现了在陨石坑形成过程中产生的结构，可能是类似风的过程。