The Cyclic Spectrum Analysis of IMFs of EMD and Its Application to Gravity Tide |
| |
Authors: | Quan Haiyan Liu Yan |
| |
Institution: | Kunming University of Science and Technology, Faculty of Information Engineering and Automation, Kunming 650500,China |
| |
Abstract: | IMFs sifted out by EMD are the FM-AM components. In the paper, by the cyclic spectrum analysis, IMFs are demodulated as the two periodic components which are identical to the intrinsic physical concepts. Using the method, the half-day-tide M2, the day-tide O1, and the half-month-tide Mf are extracted from the gravity tide signal, and a conclusion is drawn that the half-day-tide M2 and the day-tide O1 are primary components of gravity tide signal, and the half-month-tide Mf is modulated in the half-day-tide M2 and the day-tide O1. |
| |
Keywords: | EMD Gravity tide Cyclic spectrum Demodulation |
|
| 点击此处可从《地球科学进展》浏览原始摘要信息 |
| 点击此处可从《地球科学进展》下载免费的PDF全文 |
|