A model of the time-variable gravity field inverted from combined GRACE on-board GPS and KBR range rate data
文献类型：期刊论文
| 作者 | Guo NanNan1; Zhou XuHua1; Wu Bin1; Zhao Gang1
|
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2017 |
| 卷号 | 60期号:7页码:2568 |
| 关键词 | GRACE Time-variable gravity field K-band range-rate measurements On-board GPS observations Combined solution |
| ISSN号 | 0001-5733 |
| 英文摘要 | Recovering the GRACE time-variable gravity field in high precision remains a challenging task of satellite gravity. To solve this problem, we use Gravity Recovery and Climate Experiment (GRACE) on-board GPS observations and K-band range-rate (KBRR) measurements to achieve the orbit of GRACE satellite and monthly temporal gravity field solutions to degree/order 60 at the same time. The results are discussed in the aspects of orbit determination accuracy, GRACE on-board GPS data phase residuals, K-band range-rate measurements residuals and the precision of temporal gravity field solutions. The results show that: (1) compared with reduced dynamic orbit provided by NASA's Jet Propulsion Laboratory (JPL), three-dimensional position accuracy of our GRACE orbit solution is better than 5 cm. (2) The residuals of on-board GPS phase observations are about 5 similar to 8 mm, and the residuals of KBRR are about 0. 18 similar to 0. 30 mu m . s(-1) (3) Comparing the time-varying signal of our GRACE monthly solution with the RL05 models of Centre for Space Research (CSR) and JPL as well as the GeoForschungsZentrum (GFZ) RL05 model, our solutions agree with all of them in terms of the spatial distribution. Mass change signals in the Amazon basin and the Yangtze basin calculated by our model are compared with that of other models. The average correlation coefficients between ShangHai Astronomical observatory (SHA) and the aforementioned three time-variable gravity field models are all greater than 0. 9. It is evident that the algorithm presented in this paper has the ability to recover the GRACE time-variable gravity field model with a high precision which achieves the satellite orbits and the gravity field model at the same time. It can provide an important technical support for inversion of the Chinese satellite gravity field. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/61618]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.中国科学院国家天文台 2.中国科学院大学 |
| 推荐引用方式 GB/T 7714 | Guo NanNan,Zhou XuHua,Wu Bin,et al. A model of the time-variable gravity field inverted from combined GRACE on-board GPS and KBR range rate data[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2017,60(7):2568. |
| APA | Guo NanNan,Zhou XuHua,Wu Bin,&Zhao Gang.(2017).A model of the time-variable gravity field inverted from combined GRACE on-board GPS and KBR range rate data.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,60(7),2568. |
| MLA | Guo NanNan,et al."A model of the time-variable gravity field inverted from combined GRACE on-board GPS and KBR range rate data".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 60.7(2017):2568. |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。