Improvement of edge effect of the wavelet time-frequency spectrum: application to the length-of-day series
文献类型：期刊论文
| 作者 | Zheng, D; Chao, BF; Zhou, Y; Yu, N
|
| 刊名 | JOURNAL OF GEODESY
 |
| 出版日期 | 2000-03-01 |
| 卷号 | 74期号:2页码:249-254 |
| 关键词 | wavelet transform edge effect length of day |
| 英文摘要 | The edge effect in the wavelet time-frequency spectrum of a time series is treated. The time series is first extended on both ends by applying a non-linear model, namely the leap-step time series analysis (LSTSA) model: prior to the wavelet transform. The results of a series of simulation experiments and an application to the observed length-of-day (LOD) series demonstrate that the edge effect is effectively reduced this way. Thus, the application of the LSTSA model improves the wavelet time-frequency spectrum, especially enhancing the ability to detect the low-frequency signals. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Geochemistry & Geophysics ; Remote Sensing |
| 研究领域[WOS] | Geochemistry & Geophysics ; Remote Sensing |
| 关键词[WOS] | EL-NINO ; SOUTHERN OSCILLATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000086651600004 |
| 源URL | [http://119.78.226.72/handle/331011/28665]  |
| 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.NASA, Goddard Space Flight Ctr, Space Geodesy Branch, Greenbelt, MD 20771 USA |
| 推荐引用方式 GB/T 7714 | Zheng, D,Chao, BF,Zhou, Y,et al. Improvement of edge effect of the wavelet time-frequency spectrum: application to the length-of-day series[J]. JOURNAL OF GEODESY,2000,74(2):249-254. |
| APA | Zheng, D,Chao, BF,Zhou, Y,&Yu, N.(2000).Improvement of edge effect of the wavelet time-frequency spectrum: application to the length-of-day series.JOURNAL OF GEODESY,74(2),249-254. |
| MLA | Zheng, D,et al."Improvement of edge effect of the wavelet time-frequency spectrum: application to the length-of-day series".JOURNAL OF GEODESY 74.2(2000):249-254. |
入库方式： OAI收割
来源：上海天文台
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。