Inversion of ionospheric GPS occultation data
文献类型：期刊论文
| 作者 | Zeng, Z; Hu, X; Zhang, XJ; Wan, WX |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2004-07-01 |
| 卷号 | 47期号:4页码:578-583 |
| 关键词 | GPS/MET dual-frequencies method single-frequency method ionospheric occultation |
| 英文摘要 | Based on the assumption of the local spherical symmetric ionosphere, we propose two inversion methods with which ionospheric density profiles are extracted from the dual frequencies mid single frequency radio occultation data respectively. The estimation errors of the dual-frequency method come from errors of the carrier phase measurements, while the errors of the single frequency method mainly are determined by the precision of the pseudo-range measurements. Since the pseudo-range measurements tend to be about 100 times noisier than those of the carrier phase, the retrieval precision with the dual-frequency method may be generally higher than that with the single frequency. However, slightly different paths of carrier L1 and L2 will bring errors to estimations of the dual-frequency method. The radio occultation simulation data. with a 3 dimensional ray-tracing program are used to evaluate these inversion methods. Results show that the inversion profiles agree very well with the given model ionosphere, which indicates reliabilities and accuracies of both methods. Then, two inversion methods are applied to the processing of GPS/MET ionospheric occultation data. The inversion results show reasonable ionospheric profiles. Inversion profiles with the single-frequency method are consistent with those of the dual-frequency method, which provide the theoretical inversion base for ionosphere radio occultation observations with a single frequency GPS receiver onboard LEO. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geochemistry & Geophysics |
| 研究领域[WOS] | Geochemistry & Geophysics |
| 关键词[WOS] | GLOBAL POSITIONING SYSTEM ; ELECTRON-DENSITY ; NEUTRAL ATMOSPHERE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000222988300005 |
| 公开日期 | 2015-12-08 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/8982]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Z,Hu, X,Zhang, XJ,et al. Inversion of ionospheric GPS occultation data[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2004,47(4):578-583. |
| APA | Zeng, Z,Hu, X,Zhang, XJ,&Wan, WX.(2004).Inversion of ionospheric GPS occultation data.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,47(4),578-583. |
| MLA | Zeng, Z,et al."Inversion of ionospheric GPS occultation data".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 47.4(2004):578-583. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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