A new GPS-based calibration of GRACE accelerometers using the arc-to-chord threshold uncovered sinusoidal disturbing signal
文献类型：期刊论文
| 作者 | Calabia, Andres1,2; Jin, Shuanggen1,3 ; Tenzer, Robert4
|
| 刊名 | AEROSPACE SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 45期号:1页码:265-271 |
| 关键词 | Accelerometers Calibration Global Positioning System (GPS) Low Earth Orbit (LEO) satellites Error analysis |
| 英文摘要 | In order to guarantee an unbiased solution in accelerometer measurements, calibration parameters have been finally calculated without using any kind of regularization or constraint. In this paper, a better calibration of the GRACE accelerometers is achieved from the instantaneous GPS-based non-gravitational accelerations. The first derivatives of the precise-orbit velocity are computed under an a priori arc-to-chord threshold, while the modelled time-varying forces of gravitational origin and reference-system rotations are computed according to current conventions (including sub-daily tide variations). After subtracting the modelled time-varying gravity from the GPS-based accelerations, cross-track axes of both GRACE satellites seem to be affected by a periodic error of unknown source. With the purpose of extracting the underlying information from the resulting data, the systematic error is modelled and subtracted successfully. According to this approach, the resulting accelerations serve as a reliable reference for accelerometer calibration. (C) 2015 Elsevier Masson SAS. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Aerospace |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | ORBIT DETERMINATION ; CHAMP ; SATELLITE ; GRAVITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000360597800030 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://119.78.226.72/handle/331011/28246]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, Beijing 10047, Peoples R China 3.Bulent Ecevit Univ, Dept Geomat Engn, TR-67100 Zonguldak, Turkey 4.Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430079, Peoples R China |
| 推荐引用方式 GB/T 7714 | Calabia, Andres,Jin, Shuanggen,Tenzer, Robert. A new GPS-based calibration of GRACE accelerometers using the arc-to-chord threshold uncovered sinusoidal disturbing signal[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2015,45(1):265-271. |
| APA | Calabia, Andres,Jin, Shuanggen,&Tenzer, Robert.(2015).A new GPS-based calibration of GRACE accelerometers using the arc-to-chord threshold uncovered sinusoidal disturbing signal.AEROSPACE SCIENCE AND TECHNOLOGY,45(1),265-271. |
| MLA | Calabia, Andres,et al."A new GPS-based calibration of GRACE accelerometers using the arc-to-chord threshold uncovered sinusoidal disturbing signal".AEROSPACE SCIENCE AND TECHNOLOGY 45.1(2015):265-271. |
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