基于嫦娥二号立体影像的全月高精度地形重建

提出了一种针对嫦娥二号高分辨率立体影像的全月处理方法，采用5个激光反射器的月面位置作为绝对控制点，制作了一个新的全月地形产品（CE2TMap2015），包括7 m、20 m和50 m 3种不同分辨率类型的数据，实现了全月球范围内的无缝镶嵌和高精度绝对定位，数字高程模型（DEM）和数字正射影像（DOM）均实现了全月球覆盖。在评估CE2TMap2015地形数据产品平面位置精度和高程精度的基础上，与SLDEM2013、GLD100和LOLA DEM等全月地形产品进行了比较，结果显示CE2TMap2015地形数据产品在空间分辨率、全月覆盖率、数据连续性、绝对定位精度和地貌结构细节表达等方面与其他全月地形产品相比具有明显的优势，可广泛用于月球科学研究和应用。

Lunar Global High-precision Terrain Reconstruction Based on Chang'e-2 Stereo Images

A new method for lunar global topographic processing based on Chang'e-2 (CE-2) stereo images is investigated in this paper. 5 laser reflectors located on the lunar surface are used as absolute control points to produce a new global lunar terrain product, which is named CE2TMap2015 with three different resolution types of data of 7 m、20 m and 50 m. The Digital Elevation Model (DEM) data and the Digital Orthophoto Map (DOM) data of CE2TMap2015 both cover the lunar global surface with a coverage rate of 100%. The horizontal and elevation accuracy of CE2TMap2015 is evaluated and a detailed comparison between CE2TMap2015 and the same type of products is made, such as SLDEM2013, GLD100 and LOLA DEM. The results show that the lunar global terrain product in this paper can achieve a seamless mosaic within the entire lunar surface and high-precision absolute positioning. Compared with other global lunar terrain products, CE2TMap2015 has obvious advantages in terms of spatial resolution, global coverage, data continuity, absolute positioning accuracy, detailed representation of geomorphological structures, and so on. It can be widely used in lunar scientific research and engineering application.