Lunar Orbital VLBI Experiment: Motivation, scientific purposes and status
文献类型：期刊论文
| 作者 | Hong, Xiaoyu2; Wu, Weiren10; Liu, Qinghui2; Yu, Dengyun9; Wang, Chi8; Shuai, Tao2; Zhong, Weiye2; Zhu, Renjie2; Xie, Yonghui2; Zhang, Lihua1 |
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2025-11-14 |
| 卷号 | 69期号:1页码:219511 |
| 关键词 | space VLBI lunar exploration Moon-Earth baseline |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-025-2751-2 |
| 产权排序 | 11 |
| 英文摘要 | The Lunar Orbital VLBI Experiment (LOVEX) is a scientific component of the Chinese Lunar Exploration Project (CLEP) Chang'E-7. The spaceborne component of LOVEX is implemented onboard the relay satellite QueQiao-2, which was launched on 20 March 2024, and later placed into an elliptical selenocentric orbit. The LOVEX-specific payload consists of an X-band cryogenic receiver, a hydrogen maser frequency standard, and VLBI data formatting and acquisition electronics. Several components of the QueQiao-2 nominal onboard instrumentation, such as the 4.2-m antenna, the data storage device, and the downlink communication system, contribute to the overall spaceborne VLBI instrumentation. This allows us to form a space radio telescope capable of co-observing with Earth-based radio telescopes in VLBI mode. In this space VLBI system, the length of the baseline extends up to approximately 380000 km. This paper presents the LOVEX scientific objectives, architecture, instrumentation, prelaunch tests, in-flight verification and calibration, and the first in-flight detections of interferometric response ("fringes") achieved through observations of the quasar AO 0235+164 and the Chang'E-6 orbital module, positioned at the Sun-Earth Lagrange point L2. These initial results demonstrate the successful performance of LOVEX, verifying its capability for both astronomical and spacecraft tracking observations at ultra-long VLBI baselines. |
| WOS关键词 | BASE-LINE INTERFEROMETRY ; GENERAL-RELATIVITY ; SPACE ; RADIOASTRON ; EMISSION ; SUBSTRUCTURE ; PULSARS |
| 资助项目 | Lunar Orbital VLBI Experiment of the Chang'E-7 Mission in the Chinese Lunar Exploration Program ; International Talent Program of the Chinese Academy of Sciences[2024PVA0008] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001619523800001 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | Lunar Orbital VLBI Experiment of the Chang'E-7 Mission in the Chinese Lunar Exploration Program ; International Talent Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8326]  |
| 专题 | 星系宇宙学研究团组 |
| 通讯作者 | Hong, Xiaoyu |
| 作者单位 | 1.DFH Satellite Co Ltd, Beijing 100094, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 4.Xian Inst Space Ratio Technol, Xian 710100, Peoples R China 5.Informat Engn Univ, Zhengzhou 450001, Peoples R China 6.Beijing Aerosp Control Ctr, Beijing 100094, Peoples R China 7.Beijing Inst Tracking & Telecommun Technol, Beijing 100094, Peoples R China 8.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China 9.China Aerosp Sci & Technol Corp, Beijing 100048, Peoples R China 10.China Natl Space Adm, Lunar Explorat & Space Engn Ctr, Beijing 100048, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hong, Xiaoyu,Wu, Weiren,Liu, Qinghui,et al. Lunar Orbital VLBI Experiment: Motivation, scientific purposes and status[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2025,69(1):219511. |
| APA | Hong, Xiaoyu.,Wu, Weiren.,Liu, Qinghui.,Yu, Dengyun.,Wang, Chi.,...&Ye, Shuhua.(2025).Lunar Orbital VLBI Experiment: Motivation, scientific purposes and status.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,69(1),219511. |
| MLA | Hong, Xiaoyu,et al."Lunar Orbital VLBI Experiment: Motivation, scientific purposes and status".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 69.1(2025):219511. |
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