Lunar digital elevation model and elevation distribution model based on Chang’E-1 LAM data  

作　　者：CAI ZhanChuan1,2,ZHENG CaiMu1,2,TANG ZeSheng1,2,3 & QI DongXu1,2,4 1 Faculty of Information Technology,Macao University of Science and Technology,Macao,China 2 Collaborative Research Laboratory on Lunar and Planetary Exploration,Macao University of Science and Technology,Macao,China 3 School of Information Science and Technology,Tsinghua University,Beijing 100084,China 4 School of Information Science and Technology,Sun Yat-sen University,Guangzhou 510275,China 

出　　处：《Science China(Technological Sciences)》2010年第9期2558-2568,共11页中国科学（技术科学英文版）

基　　金：supported by the Macao Science and Technology Development Fund (Grant Nos. 003/2008/A1, 008/2008/A1);the National Natural Science Foundation of China (Grant No. 10631080)

摘　　要：More than 8.2 million effective data samples were obtained by the Chang’E-1 Laser Altimeter (LAM).In order to produce a global topographic model of the moon with improved accuracy,a hierarchical many-knot spline method was proposed in this paper.This algorithm makes use of a hierarchy of control lattices to approximate or interpolate the LAM data.Based on the proposed algorithm,a 0.0625°×0.0625° grid of global lunar DEM was obtained and it was compared with ULCN2005,CLTMs01 and Kaguya models,respectively.At the same time,this paper explored the elevation distribution law and established the elevation distribution model.It is shown that the global lunar and nearside elevation distribution is positively skewed and leptokurtic normal distribution,and the farside elevation distribution is a positively skewed and platykurtic normal distribution.More than 8.2 million effective data samples were obtained by the Chang’E-1 Laser Altimeter (LAM).In order to produce a global topographic model of the moon with improved accuracy,a hierarchical many-knot spline method was proposed in this paper.This algorithm makes use of a hierarchy of control lattices to approximate or interpolate the LAM data.Based on the proposed algorithm,a 0.0625°×0.0625° grid of global lunar DEM was obtained and it was compared with ULCN2005,CLTMs01 and Kaguya models,respectively.At the same time,this paper explored the elevation distribution law and established the elevation distribution model.It is shown that the global lunar and nearside elevation distribution is positively skewed and leptokurtic normal distribution,and the farside elevation distribution is a positively skewed and platykurtic normal distribution.

关 键 词：Chang’E-1 LAM DEM DISTRIBUTION model 

分 类 号：TH[机械工程]