Dielectric Properties of Lunar Materials at the Chang’e-4 Landing Site
On January 3rd 2019, the Chang’e-4 mission successfully landed in the Von Kármán Crater inside the South Pole-Aitken (SPA) basin and achieved the first soft landing on the farside of the Moon. Lunar penetrating radar (LPR) equipped on the rover measured the shallow subsurface structure along the mot...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2021
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs13204056 |
id |
ftmdpi:oai:mdpi.com:/2072-4292/13/20/4056/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2072-4292/13/20/4056/ 2023-08-20T04:09:52+02:00 Dielectric Properties of Lunar Materials at the Chang’e-4 Landing Site Jialong Lai Feifei Cui Yi Xu Chaofei Liu Ling Zhang agris 2021-10-11 application/pdf https://doi.org/10.3390/rs13204056 EN eng Multidisciplinary Digital Publishing Institute Satellite Missions for Earth and Planetary Exploration https://dx.doi.org/10.3390/rs13204056 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 13; Issue 20; Pages: 4056 Chang’e-4 lunar penetrating radar loss tangent Text 2021 ftmdpi https://doi.org/10.3390/rs13204056 2023-08-01T02:55:19Z On January 3rd 2019, the Chang’e-4 mission successfully landed in the Von Kármán Crater inside the South Pole-Aitken (SPA) basin and achieved the first soft landing on the farside of the Moon. Lunar penetrating radar (LPR) equipped on the rover measured the shallow subsurface structure along the motion path for more than 700 m. LPR data could be used to obtain the dielectric properties of the materials beneath the exploration area, providing important clues as to the composition and source of the materials. Although the properties of the upper fine-grained regolith have been studied using various methods, the underlying coarse-grained materials still lack investigation. Therefore, this paper intends to estimate the loss tangent of the coarse-grained materials at depth ranges of ~12 and ~28 m. Stochastic media models with different rock distributions for the LPR finite-difference time-domain (FDTD) simulation are built to evaluate the feasibility of the estimation method. Our results show that the average loss tangent value of coarse-grained materials is 0.0104±0.0027, and the abundance of FeOT+TiO2is20.08wt.%, which is much higher than the overlying fine-grained regolith, indicating different sources. Text South pole MDPI Open Access Publishing South Pole Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Remote Sensing 13 20 4056 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Chang’e-4 lunar penetrating radar loss tangent |
spellingShingle |
Chang’e-4 lunar penetrating radar loss tangent Jialong Lai Feifei Cui Yi Xu Chaofei Liu Ling Zhang Dielectric Properties of Lunar Materials at the Chang’e-4 Landing Site |
topic_facet |
Chang’e-4 lunar penetrating radar loss tangent |
description |
On January 3rd 2019, the Chang’e-4 mission successfully landed in the Von Kármán Crater inside the South Pole-Aitken (SPA) basin and achieved the first soft landing on the farside of the Moon. Lunar penetrating radar (LPR) equipped on the rover measured the shallow subsurface structure along the motion path for more than 700 m. LPR data could be used to obtain the dielectric properties of the materials beneath the exploration area, providing important clues as to the composition and source of the materials. Although the properties of the upper fine-grained regolith have been studied using various methods, the underlying coarse-grained materials still lack investigation. Therefore, this paper intends to estimate the loss tangent of the coarse-grained materials at depth ranges of ~12 and ~28 m. Stochastic media models with different rock distributions for the LPR finite-difference time-domain (FDTD) simulation are built to evaluate the feasibility of the estimation method. Our results show that the average loss tangent value of coarse-grained materials is 0.0104±0.0027, and the abundance of FeOT+TiO2is20.08wt.%, which is much higher than the overlying fine-grained regolith, indicating different sources. |
format |
Text |
author |
Jialong Lai Feifei Cui Yi Xu Chaofei Liu Ling Zhang |
author_facet |
Jialong Lai Feifei Cui Yi Xu Chaofei Liu Ling Zhang |
author_sort |
Jialong Lai |
title |
Dielectric Properties of Lunar Materials at the Chang’e-4 Landing Site |
title_short |
Dielectric Properties of Lunar Materials at the Chang’e-4 Landing Site |
title_full |
Dielectric Properties of Lunar Materials at the Chang’e-4 Landing Site |
title_fullStr |
Dielectric Properties of Lunar Materials at the Chang’e-4 Landing Site |
title_full_unstemmed |
Dielectric Properties of Lunar Materials at the Chang’e-4 Landing Site |
title_sort |
dielectric properties of lunar materials at the chang’e-4 landing site |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/rs13204056 |
op_coverage |
agris |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
South Pole Aitken |
geographic_facet |
South Pole Aitken |
genre |
South pole |
genre_facet |
South pole |
op_source |
Remote Sensing; Volume 13; Issue 20; Pages: 4056 |
op_relation |
Satellite Missions for Earth and Planetary Exploration https://dx.doi.org/10.3390/rs13204056 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs13204056 |
container_title |
Remote Sensing |
container_volume |
13 |
container_issue |
20 |
container_start_page |
4056 |
_version_ |
1774723597023051776 |