Lunar Degree-2 Tidal Love Number Determination Based on Combination of Four-way Radiometric Tracking and LLR Data
文献类型：期刊论文
| 作者 | Wang, Chongyang1; Yan, Jianguo1,2; Sun, Shangbiao1; Qiu, Denggao1; Barriot, Jean-Pierre1,3 |
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2025-04-01 |
| 卷号 | 169期号:4页码:190 |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/adb60b |
| 产权排序 | 2 |
| 英文摘要 | Lunar tidal Love numbers ( k2 , h2 , and l2 ), critical for understanding lunar interior structures, are traditionally derived from methods such as lunar spacecraft radiometric tracking, Lunar Laser Ranging (LLR), and laser altimetry. The Chang'e 7 lander is expected to carry a radio transponder and a retroreflector. In order to assess the ability of the Chang'e 7 data to constrain these Love numbers, we conducted a numerical simulation based on a four-way relay tracking model in terms of different orbital inclinations, varying lander positions (nearside, south pole, and farside of the Moon), combined with LLR. Our simulation results demonstrate the effectiveness of the Chang'e 7 in determining tidal Love numbers, with a particular advantage for h2 and l2 . By combining the LLR data from the nearside and the south pole of the Moon as well as the four-way lander tracking data of Chang'e 7, the formal uncertainties of h2 and l2 are better than 10-4 , which is nearly 1 order of magnitude higher than the existing accuracy estimated by LLR alone ( 10-3 ). For the lunar south pole region, four-way radiometric ranging can still offer higher sensitivity and a longer observation time compared to LLR. This is evident for measurements of h2 , despite the fact that radiometric ranging precision is an order of magnitude lower than that of LLR. This type of observation not only complements laser altimetry and LLR but also holds potential for application to other celestial bodies (e.g., Ganymede, Callisto, Mars) capable of supporting a landed mission. |
| WOS关键词 | GRAVITY-FIELD ; INTERIOR STRUCTURE ; BODY TIDE ; GRAIL ; MOON ; PARAMETERS ; CONSTRAINTS ; SCIENCE ; MODEL |
| 资助项目 | National Natural Science Foundation of China[42241116] ; National Natural Science Foundation of China[42402230] ; National Key Research and Development Program of China[2022YFF0503202] ; The 2022 Project of Xinjiang Uygur Autonomous Region of China for Heaven Lake Talent Program ; Macau Science and Technology Development Fund[SKL-LPS(MUST)-2021-2023] ; DAR grant in planetology from the French Space Agency (CNES) |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001436913200001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; The 2022 Project of Xinjiang Uygur Autonomous Region of China for Heaven Lake Talent Program ; Macau Science and Technology Development Fund ; DAR grant in planetology from the French Space Agency (CNES) |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7469]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Yan, Jianguo |
| 作者单位 | 1.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & Re, 129 Luoyu Rd, Wuhan 430070, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Univ French Polynesia, Geodesy Observ Tahiti, BP 6570, F-98702 Tahiti, French Polynesi, France |
| 推荐引用方式 GB/T 7714 | Wang, Chongyang,Yan, Jianguo,Sun, Shangbiao,et al. Lunar Degree-2 Tidal Love Number Determination Based on Combination of Four-way Radiometric Tracking and LLR Data[J]. ASTRONOMICAL JOURNAL,2025,169(4):190. |
| APA | Wang, Chongyang,Yan, Jianguo,Sun, Shangbiao,Qiu, Denggao,&Barriot, Jean-Pierre.(2025).Lunar Degree-2 Tidal Love Number Determination Based on Combination of Four-way Radiometric Tracking and LLR Data.ASTRONOMICAL JOURNAL,169(4),190. |
| MLA | Wang, Chongyang,et al."Lunar Degree-2 Tidal Love Number Determination Based on Combination of Four-way Radiometric Tracking and LLR Data".ASTRONOMICAL JOURNAL 169.4(2025):190. |
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