Mars Orientation Parameters Estimation with Simulated Same Beam Interferometry
文献类型：期刊论文
| 作者 | Liu, Yixiao2; Wang, Bo3; Yan, Jianguo1,2; Sun, Shangbiao2; Yang, Wanling2; Barriot, Jean-Pierre2,4 |
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2025-07-01 |
| 卷号 | 170期号:1页码:25 |
| ISSN号 | 0004-6256 |
| DOI | 10.3847/1538-3881/add5ec |
| 产权排序 | 3 |
| 英文摘要 | The accurate determination of Mars orientation parameters (MOP) is essential for investigating the internal structure, seasonal variations of polar dry ice, and dynamic evolution of Mars. Current methods rely on Doppler and range tracking between Earth ground station and Mars lander, which are constrained by ionospheric, tropospheric and other errors. Same-beam interferometry (SBI), employing two Earth ground stations simultaneous to observe two Mars landers, effectively mitigates common-mode errors by leveraging differential phase measurements. We evaluate the accuracy enhancement of SBI in resolving MOP, key findings include: SBI with landers at lower latitudes and larger longitude difference yields higher accuracy; SBI alone is unsuitable for MOP due to its lower sensitivity to parameters compared to two-way Doppler and two-way range most of time; Combining with SBI data, two-way Doppler improves the accuracy of precession rate ( psi 0 ), obliquity rate ( I0 ), and spin rate ( phi 0 ) by up to 43%, and reduced the correlation between some parameters, for certain rigid amplitudes, length-of-day (LOD) variation and polar motion parameters, there are different durations and degrees of accuracy improvement before the 700th mission day. Two-way range integrated with SBI achieves up to 45% precision gain about these three parameters, for certain rigid amplitudes and LOD variation, there are also different durations and degrees of accuracy improvement before the 600th mission day, with no significant improvement in polar motion parameters. SBI has duration selectivity and observation mode dependence for the improvement, and low-noise and low-latitude lander distribution can further extend the accuracy improvement duration. |
| WOS关键词 | RADIO SCIENCE EXPERIMENT ; ORBIT DETERMINATION ; INTERIOR STRUCTURE ; GRAVITY-FIELD ; TRACKING ; ROTATION |
| 资助项目 | National Key Research and Development Program of China[2022YFF0503202] ; National Natural Science Foundation of China[42241116] ; The 2022 Project of Xinjiang Uygur Autonomous Region of China for Heaven Lake Talent Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001505464000001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; The 2022 Project of Xinjiang Uygur Autonomous Region of China for Heaven Lake Talent Program |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7834]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Yan, Jianguo |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & Re, Wuhan, Peoples R China 3.Shanghai Inst Satellite Engn, Shanghai 200240, Peoples R China 4.Univ French Polynesia, Geodesy Observ Tahiti, Tahiti, French Polynesi, France |
| 推荐引用方式 GB/T 7714 | Liu, Yixiao,Wang, Bo,Yan, Jianguo,et al. Mars Orientation Parameters Estimation with Simulated Same Beam Interferometry[J]. ASTRONOMICAL JOURNAL,2025,170(1):25. |
| APA | Liu, Yixiao,Wang, Bo,Yan, Jianguo,Sun, Shangbiao,Yang, Wanling,&Barriot, Jean-Pierre.(2025).Mars Orientation Parameters Estimation with Simulated Same Beam Interferometry.ASTRONOMICAL JOURNAL,170(1),25. |
| MLA | Liu, Yixiao,et al."Mars Orientation Parameters Estimation with Simulated Same Beam Interferometry".ASTRONOMICAL JOURNAL 170.1(2025):25. |
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来源：新疆天文台
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