Detection of mass, shape and surface roughness of target asteroid of MUSES-C by LIDAR

被引：14
|
作者：
Mukai, T [1 ]
Araki, H
Mizuno, T
Hatanaka, N
Nakamura, AM
Kamei, A
Nakayama, H
Cheng, A
机构：
[1] Kobe Univ, Grad Sch Sci & Technol, Kobe, Hyogo 6578501, Japan
[2] Natl Astron Observ, Mizusawa, Japan
[3] Inst Space & Astronaut Sci, Kanagawa 2298510, Japan
[4] Johns Hopkins Univ, Appl Phys Lab, Baltimore, MD 20723 USA
来源：
EXPLORATION OF SMALL SOLAR SYSTEM OBJECTS: PAST, PRESENT AND FUTURE | 2002年 / 29卷 / 08期
关键词：
Gravitational fields;
D O I：
10.1016/S0273-1177(02)00141-2
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
The LIght Detection And Ranging instrument (LIDAR) is a laser altimeter to be launched with the MUSES-C spacecraft. This ranging function of LIDAR will be applied also to measure the gravitational field around the target asteroid, as well as its shape and surface roughness. Theoretical simulations for the free fall trajectories of the spacecraft suggest that we can estimate the mass of the asteroid with the error of about 5similar to7% by LIDAR. Loboratory measurements of laser backscattering by regolith analogue material showed that the reflected intensity decreased with increasing incident angle relative to normal intensity. The variation becomes weak when the target is covered with regolith compared to the reflected intensity from bedrock. (C) 2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1231 / 1235
页数：5
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