An imaging method for Chang'e-5 Lunar Regolith Penetrating Radar

被引：17

作者：

Feng, Jianqing ^{[1
,2
]}

Su, Yan ^{[1
,2
]}

Li, Chunlai ^{[1
,2
]}

Dai, Shun ^{[1
,2
]}

Xing, Shuguo ^{[1
,2
]}

Xiao, Yuan ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Key Lab Lunar & Deep Space Explorat, Beijing 100012, Peoples R China

[2] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100012, Peoples R China

来源：

PLANETARY AND SPACE SCIENCE | 2019年 / 167卷

基金：

中国国家自然科学基金;

关键词：

Moon; Surface; Radar observation; Regolith; Instrumentation; MIGRATION; GPR;

D O I：

10.1016/j.pss.2019.01.008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Lunar Regolith Penetrating Radar (LRPR) is an instrument that will be carried by the Chang'e-S (CE-5) lander to investigate lunar regolith. In this paper, a specific imaging method is developed to process LRPR data obtained in ground tests. We measure and subtract the 'background' from test data to reduce signal clutter, and apply the envelope velocity spectrum to estimate the propagation velocity of electromagnetic waves in regolith simulant. Then a modified pre-stack migration using Hilbert transformed signals is proposed for subsurface imaging. In this method, media absorption, spherical spread loss, and Snell's law are also taken into consideration. The modified migration clearly images the granite slates buried within 2.5m and produces cleaner results than the conventional method. The introduced algorithms prove to be robust and applicable to LRPR data.

引用

页码：9 / 16

页数：8

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