An Innovative Synthetic Aperture Radar Design Method for Lunar Water Ice Exploration

Owing to the Moon’s rough surface, there is a growing controversy over the conclusion that water ice exists in the lunar permanently shadowed regions (PSRs) with a high circular polarization ratio (CPR). To further detect water ice on the Moon, an innovative design method for spaceborne synthetic ap...

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Main Authors: Yanyan Zhang, Fei Zhao, Sheng Chang, Mingliang Liu, Robert Wang
Format: Article
Language:English
Published: MDPI AG 2022-04-01
Series:Remote Sensing
Subjects:
Online Access:https://www.mdpi.com/2072-4292/14/9/2148
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author Yanyan Zhang
Fei Zhao
Sheng Chang
Mingliang Liu
Robert Wang
author_facet Yanyan Zhang
Fei Zhao
Sheng Chang
Mingliang Liu
Robert Wang
author_sort Yanyan Zhang
collection DOAJ
description Owing to the Moon’s rough surface, there is a growing controversy over the conclusion that water ice exists in the lunar permanently shadowed regions (PSRs) with a high circular polarization ratio (CPR). To further detect water ice on the Moon, an innovative design method for spaceborne synthetic aperture radar (SAR) system is proposed, to obtain radar data that can be used to distinguish water ice from lunar regolith with a small difference in the dielectric constants. According to Campbell’s dielectric constant model and the requirement that SAR radiometric resolution is smaller than the contrast of targets in images, a newly defined SAR system function involved in the method is presented to evaluate the influence of some system parameters on the water ice detection capability of SAR. In addition, several simulation experiments are performed, and the results demonstrate that the presented SAR design method may be helpful for lunar water ice exploration.
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spelling doaj.art-fb85594ef8e14a9cbb41ff73b72208812023-11-23T09:11:20ZengMDPI AGRemote Sensing2072-42922022-04-01149214810.3390/rs14092148An Innovative Synthetic Aperture Radar Design Method for Lunar Water Ice ExplorationYanyan Zhang0Fei Zhao1Sheng Chang2Mingliang Liu3Robert Wang4Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaOwing to the Moon’s rough surface, there is a growing controversy over the conclusion that water ice exists in the lunar permanently shadowed regions (PSRs) with a high circular polarization ratio (CPR). To further detect water ice on the Moon, an innovative design method for spaceborne synthetic aperture radar (SAR) system is proposed, to obtain radar data that can be used to distinguish water ice from lunar regolith with a small difference in the dielectric constants. According to Campbell’s dielectric constant model and the requirement that SAR radiometric resolution is smaller than the contrast of targets in images, a newly defined SAR system function involved in the method is presented to evaluate the influence of some system parameters on the water ice detection capability of SAR. In addition, several simulation experiments are performed, and the results demonstrate that the presented SAR design method may be helpful for lunar water ice exploration.https://www.mdpi.com/2072-4292/14/9/2148permanently shadowed regions (PSRs)water iceCampbell modelsynthetic aperture radar (SAR)radiometric resolutionsystem design method
spellingShingle Yanyan Zhang
Fei Zhao
Sheng Chang
Mingliang Liu
Robert Wang
An Innovative Synthetic Aperture Radar Design Method for Lunar Water Ice Exploration
Remote Sensing
permanently shadowed regions (PSRs)
water ice
Campbell model
synthetic aperture radar (SAR)
radiometric resolution
system design method
title An Innovative Synthetic Aperture Radar Design Method for Lunar Water Ice Exploration
title_full An Innovative Synthetic Aperture Radar Design Method for Lunar Water Ice Exploration
title_fullStr An Innovative Synthetic Aperture Radar Design Method for Lunar Water Ice Exploration
title_full_unstemmed An Innovative Synthetic Aperture Radar Design Method for Lunar Water Ice Exploration
title_short An Innovative Synthetic Aperture Radar Design Method for Lunar Water Ice Exploration
title_sort innovative synthetic aperture radar design method for lunar water ice exploration
topic permanently shadowed regions (PSRs)
water ice
Campbell model
synthetic aperture radar (SAR)
radiometric resolution
system design method
url https://www.mdpi.com/2072-4292/14/9/2148
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