- Integration and Coregistration of Multisource Lunar Topographic Data Sets for Synergistic Use

Lunar topographic information is essential for lunar scientific investigations and lunar exploration missions. For example, high-resolution topographic data are critical for understanding the ring structures, mare fill, ejecta, and other crustal features of impact basins. They have major implications for determining the origin and evolution of the Moon. The Moon’s crustal

CONTENTS

5.1 Introduction .................................................................................................. 97 5.2 Lunar Topographic Data Sets from Chang’E-1, SELENE, and

LRO Missions ...............................................................................................99 5.3 A Multifeature-Based Surface Matching Method for

Coregistration of Multisource Lunar DTMs .......................................... 103 5.4 Coregistration of Multiple Lunar DTMs in the Apollo 15

Landing Area .............................................................................................. 103 5.4.1 Coregistration of Chang’E-1 and LRO DTMs in the

Apollo 15 Landing Area ................................................................ 103 5.4.2 Coregistration of SELENE and LRO DTMs in the

Apollo 15 Landing Area ................................................................ 106 5.5 Coregistration of Multiple Lunar DTMs in the Sinus Iridum Area .... 108

5.5.1 Coregistration of Chang’E-1 and SELENE DTMs in the Sinus Iridum Area .......................................................................... 108

5.5.2 Coregistration of SELENE and LRO DTMs in the Sinus Iridum Area .................................................................................... 112

5.6 Synergistic Use of Multisource Lunar Topographic Data Sets ............ 113 5.7 Summary ..................................................................................................... 115 References ............................................................................................................. 117

features have largely been established from a combination of satellite-altimetry-derived topography analyses and satellite observations of the lunar gravity field (Potts and von Frese 2005). The topographic information of lunar impact craters can provide fundamental insights into lunar crust properties, the role of volatiles, and the relative surface age and physics of the craters (Garvin et  al. 1999), and their morphological characterizations are significant sources for scientific research. Surface slope measurements are reliable indicators of the importance of gravity-driven processes to a surface. Lunar topographic data also play a critical role in landing-site selection, precision landing, and ground science experiments in lander, vehicle/robot, astronaut, and outpost explorations.