Electromagnetic Signal Attenuation Characteristics in the Lunar Regolith Observed by the Lunar Regolith Penetrating Radar (LRPR) Onboard the Chang’E-5 Lander
The Chinese Chang’E-5 probe landed in the Mons Rümker of Oceanus Procellarum on the near side of the Moon. The lunar regolith penetrating radar (LRPR) carried by the Chang’E-5 probe allows for the determination of in situ lunar regolith dielectric properties, which are probably related to the age an...
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MDPI AG
2022-10-01
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| author | Chunyu Ding Yan Su Zhonghan Lei Zongyu Zhang Mi Song Yuanzhou Liu Ruigang Wang Qingquan Li Chunlai Li Shaopeng Huang |
| author_facet | Chunyu Ding Yan Su Zhonghan Lei Zongyu Zhang Mi Song Yuanzhou Liu Ruigang Wang Qingquan Li Chunlai Li Shaopeng Huang |
| author_sort | Chunyu Ding |
| collection | DOAJ |
| description | The Chinese Chang’E-5 probe landed in the Mons Rümker of Oceanus Procellarum on the near side of the Moon. The lunar regolith penetrating radar (LRPR) carried by the Chang’E-5 probe allows for the determination of in situ lunar regolith dielectric properties, which are probably related to the age and chemical composition of the regolith. In this paper, we analyze the Chang’E-5 LRPR data with the frequency shift method to estimate the loss tangent of the lunar regolith within a depth of ∼2.8 m. The loss tangent of the Chang’E-5 landing site is constrained to be 0.0148 ± 0.0016, which is substantially higher than that of the typical lunar regolith. The high loss tangent is found to be characteristic of the young basalt age (∼2.0 Ga) and high TiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>+FeO content (28.21 ± 1.57%) of the Chang’E-5 landing site. Integrated analysis of results from Chang’E-3, Chang’E-4, and Chang’E-5 show that the younger is the geologic age of the mare unit, the greater is the loss tangent of the lunar regolith, and the weaker is the radar electromagnetic signal penetrating ability. |
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| spelling | doaj.art-b9cad75acaee4b84a62b0e4933ff7fce2023-11-24T02:20:53ZengMDPI AGRemote Sensing2072-42922022-10-011420518910.3390/rs14205189Electromagnetic Signal Attenuation Characteristics in the Lunar Regolith Observed by the Lunar Regolith Penetrating Radar (LRPR) Onboard the Chang’E-5 LanderChunyu Ding0Yan Su1Zhonghan Lei2Zongyu Zhang3Mi Song4Yuanzhou Liu5Ruigang Wang6Qingquan Li7Chunlai Li8Shaopeng Huang9Institute of Advance Study, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, ChinaInstitute of Advance Study, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, ChinaSpace and Earth Interdisciplinary Center, Shenzhen University, Shenzhen 518060, ChinaSpace and Earth Interdisciplinary Center, Shenzhen University, Shenzhen 518060, ChinaThe 54th Research Institute of China Electronic Technology Corporation (CETC), Shijiazhuang 050081, ChinaSpace and Earth Interdisciplinary Center, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, ChinaSpace and Earth Interdisciplinary Center, Shenzhen University, Shenzhen 518060, ChinaThe Chinese Chang’E-5 probe landed in the Mons Rümker of Oceanus Procellarum on the near side of the Moon. The lunar regolith penetrating radar (LRPR) carried by the Chang’E-5 probe allows for the determination of in situ lunar regolith dielectric properties, which are probably related to the age and chemical composition of the regolith. In this paper, we analyze the Chang’E-5 LRPR data with the frequency shift method to estimate the loss tangent of the lunar regolith within a depth of ∼2.8 m. The loss tangent of the Chang’E-5 landing site is constrained to be 0.0148 ± 0.0016, which is substantially higher than that of the typical lunar regolith. The high loss tangent is found to be characteristic of the young basalt age (∼2.0 Ga) and high TiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>+FeO content (28.21 ± 1.57%) of the Chang’E-5 landing site. Integrated analysis of results from Chang’E-3, Chang’E-4, and Chang’E-5 show that the younger is the geologic age of the mare unit, the greater is the loss tangent of the lunar regolith, and the weaker is the radar electromagnetic signal penetrating ability.https://www.mdpi.com/2072-4292/14/20/5189China lunar exploration program (CLEP)lunar regolith penetrating radar (LRPR)loss tangent estimationradar pulse attenuationfrequency shift method |
| spellingShingle | Chunyu Ding Yan Su Zhonghan Lei Zongyu Zhang Mi Song Yuanzhou Liu Ruigang Wang Qingquan Li Chunlai Li Shaopeng Huang Electromagnetic Signal Attenuation Characteristics in the Lunar Regolith Observed by the Lunar Regolith Penetrating Radar (LRPR) Onboard the Chang’E-5 Lander Remote Sensing China lunar exploration program (CLEP) lunar regolith penetrating radar (LRPR) loss tangent estimation radar pulse attenuation frequency shift method |
| title | Electromagnetic Signal Attenuation Characteristics in the Lunar Regolith Observed by the Lunar Regolith Penetrating Radar (LRPR) Onboard the Chang’E-5 Lander |
| title_full | Electromagnetic Signal Attenuation Characteristics in the Lunar Regolith Observed by the Lunar Regolith Penetrating Radar (LRPR) Onboard the Chang’E-5 Lander |
| title_fullStr | Electromagnetic Signal Attenuation Characteristics in the Lunar Regolith Observed by the Lunar Regolith Penetrating Radar (LRPR) Onboard the Chang’E-5 Lander |
| title_full_unstemmed | Electromagnetic Signal Attenuation Characteristics in the Lunar Regolith Observed by the Lunar Regolith Penetrating Radar (LRPR) Onboard the Chang’E-5 Lander |
| title_short | Electromagnetic Signal Attenuation Characteristics in the Lunar Regolith Observed by the Lunar Regolith Penetrating Radar (LRPR) Onboard the Chang’E-5 Lander |
| title_sort | electromagnetic signal attenuation characteristics in the lunar regolith observed by the lunar regolith penetrating radar lrpr onboard the chang e 5 lander |
| topic | China lunar exploration program (CLEP) lunar regolith penetrating radar (LRPR) loss tangent estimation radar pulse attenuation frequency shift method |
| url | https://www.mdpi.com/2072-4292/14/20/5189 |
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