基于LROC NAC影像的高分辨率连续DEM数据制作

doi:10.13474/j.cnki.11-2246.2021.0281

测绘通报 ›› 2021, Vol. 0 ›› Issue (9): 93-97.doi: 10.13474/j.cnki.11-2246.2021.0281

基于LROC NAC影像的高分辨率连续DEM数据制作

马顶¹, 赵尚民¹, 程维明²

1. 太原理工大学矿业工程学院, 山西太原 030024;
2. 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室, 北京 100101

收稿日期:2021-04-29 修回日期:2021-06-11 出版日期:2021-09-25 发布日期:2021-10-11
通讯作者: 赵尚民。E-mail:zhaoshangmin@tyut.edu.cn
作者简介:马顶(1995-),男,硕士生,主要从事数字地形地貌与DEM数据研制。E-mail:mading7118@163.com
基金资助:
山西省自然科学基金（201901D111098）；国家重点研发计划（2017YFB0503603）

Exploration on the production of high-resolution continuous DEM data based on LROC NAC images

MA Ding¹, ZHAO Shangmin¹, CHENG Weiming²

1. College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2. State Key Laboratory of Resources and Environ-mental Information System, Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences, Beijing 100101, China

Received:2021-04-29 Revised:2021-06-11 Online:2021-09-25 Published:2021-10-11

摘要/Abstract

摘要： 具有高分辨率和连续表面的DEM数据是获取月球形貌特征并进行数字地形分析的主要数据源。本文选择嫦娥五号候选着陆区中的一个区域作为试验区，首先，基于LROC NAC立体影像、ISIS3和Stereo Pipeline软件生成高分辨率DOM影像及对应DEM数据，并将其与日本SELENE数据进行对比；然后，利用反距离权重、径向基函数和经验贝叶斯克里金3种插值方法对DEM数据的空洞区域进行修复，并对不同修复方法进行交叉验证分析。结果表明：生成的DOM和DEM分辨率约3.5 m，明显比7.4 m分辨率的日本SELENE数据清晰，并具有更强的地形表达能力；径向基函数插值法的空洞修复效果最好，交叉验证均方根误差为0.26 m。本文对准确获取月球形貌特征、探测器选址等具有一定作用，并能够为其他区域的高分辨率连续DEM数据生成提供参考。

关键词: DEM数据, 插值方法, LROC NAC影像, DOM影像, 嫦娥五号候选着陆区

Abstract: DEM data with high-resolution and continuous surface is the main data source for obtaining lunar morphological features and performing digital terrain analysis. A region of Chang'E-5 candidate landing region is selected as the experimental area. First, high-resolution DEM data and corresponding DOM images are generated based on LROC NAC stereo images, ISIS3 and Stereo Pipeline software, and compared with Japanese SELENE (KAGUYA) TC images; Then, Inverse Distance Weighting, Radial Basis Function and Empirical Bayesian Kriging are used to interpolate the hollow areas of DEM data and cross validation analysis was performed for three different interpolation methods. The results show that the resolution of DEM and DOM generated in this study is about 3.5 m, which is obviously clearer than that of 7.4 m resolution Japanese TC images, and has stronger terrain expression ability; Radial Basis Function interpolation is the best method for hollow interpolation, and the mean square error of cross-validation is 0.26 m. The study has a certain role in accurately acquiring lunar morphological features and locating detectors, and provides a reference for high resolution continuous DEM data generation in other regions.

Key words: DEM data, interpolation method, LROC NAC image, DOM image, Chang'E-5 candidate landing region

中图分类号:

P237

马顶, 赵尚民, 程维明. 基于LROC NAC影像的高分辨率连续DEM数据制作[J]. 测绘通报, 2021, 0(9): 93-97.

MA Ding, ZHAO Shangmin, CHENG Weiming. Exploration on the production of high-resolution continuous DEM data based on LROC NAC images[J]. Bulletin of Surveying and Mapping, 2021, 0(9): 93-97.

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基于LROC NAC影像的高分辨率连续DEM数据制作

Exploration on the production of high-resolution continuous DEM data based on LROC NAC images

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