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Revisiting GRACE Follow-On KBR Antenna Phase Center Calibration by Addressing Multipath Noise

文献类型：期刊论文

作者Li HS(李浩思)6; Xu P(徐鹏)2,3,4,5; Tang, He1,6; Yi, Shuang6
刊名REMOTE SENSING
出版日期2025-02-01
卷号17期号:3页码:21
关键词GRACE Follow-On antenna offset correction K-band ranging multipath noise
DOI10.3390/rs17030353
通讯作者Yi, Shuang(s.yi@ucas.ac.cn)
英文摘要The Gravity Recovery and Climate Experiment Follow-On (GRFO) mission precisely measures the inter-satellite range between the centers of mass of its twin satellites to map the earth's gravity field. The baseline ranging measurement is achieved using the K-band ranging (KBR) system, which is sensitive to satellite attitude variations caused by the offset between the satellite center of mass and the KBR antenna phase center. Accurate decoupling of the KBR range from attitude variations requires precise determination of the KBR's antenna offset vectors (AOVs). To address this, GRFO conducted eight KBR calibration maneuvers on 17 and 28 September 2020. However, these maneuvers exaggerated the impact of microwave multipath noise, complicating AOV estimation. Existing studies have not fully mitigated this noise. This study introduces a new frequency-domain method to estimate AOVs by leveraging double-difference signals and analyzing their spectral characteristics, along with those of the KBR range during calibration maneuvers, to suppress multipath noise. Our recalibrated AOVs achieve good alignment between the KBR and laser ranging interferometer (LRI) ranging signals. We validate our recalibrated AOVs by comparing the residuals between the LRI and KBR ranging signals corrected using both recalibrated AOVs and documented AOVs. The results show that, for the majority (58.4%) of the analyzed period (from January 2020 to June 2023), the residuals corrected by the recalibrated AOVs are closer to the LRI ranging signal. These findings demonstrate the effectiveness of the proposed method in addressing multipath noise and improving the accuracy of KBR range measurements. This work provides a framework for future gravity missions requiring precise calibration of multipath effects in inter-satellite ranging systems.
分类号二类/Q1
资助项目The National Key Research and Development Program of China[2021YFC2201901] ; National Key Research and Development Program of China[E421040401] ; National Key Research and Development Program of China[E3ER0402A2] ; National Natural Science Foundation of China[110400M003] ; University of Chinese Academy of Sciences Research[E2ET0411X2] ; Fundamental Research Funds for the Central Universities[025GJHZ2023106GC] ; Program of the Chinese Academy of Sciences
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
WOS记录号WOS:001419563700001
资助机构The National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; University of Chinese Academy of Sciences Research ; Fundamental Research Funds for the Central Universities ; Program of the Chinese Academy of Sciences
其他责任者Yi, Shuang
源URL[http://dspace.imech.ac.cn/handle/311007/100113]  
专题力学研究所_国家微重力实验室
作者单位1.Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, State Key Lab Precis Geodesy, Wuhan 430077, Peoples R China
2.Lanzhou Univ, Lanzhou Ctr Theoret Phys, Lanzhou 730000, Peoples R China;
3.Univ Chinese Acad Sci, Taiji Lab Gravitat Wave Universe Beijing Hangzhou, Beijing 100049, Peoples R China;
4.Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Key Lab Gravitat Wave Precis Measurement Zhejiang, Hangzhou 310024, Peoples R China;
5.Chinese Acad Sci, Inst Mech, Ctr Gravitat Wave Expt, Natl Micrograv Lab, Beijing 100190, Peoples R China;
6.Chinese Acad Sci, Univ Chinese Acad Sci UCAS, Coll Earth & Planetary Sci, Natl Key Lab Earth Syst Numer Modeling & Applicat, Beijing 101408, Peoples R China;
推荐引用方式
GB/T 7714		 Li HS,Xu P,Tang, He,et al. Revisiting GRACE Follow-On KBR Antenna Phase Center Calibration by Addressing Multipath Noise[J]. REMOTE SENSING,2025,17(3):21.
APA 李浩思,徐鹏,Tang, He,&Yi, Shuang.(2025).Revisiting GRACE Follow-On KBR Antenna Phase Center Calibration by Addressing Multipath Noise.REMOTE SENSING,17(3),21.
MLA 李浩思,et al."Revisiting GRACE Follow-On KBR Antenna Phase Center Calibration by Addressing Multipath Noise".REMOTE SENSING 17.3(2025):21.

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来源：力学研究所

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