The simulation of low latitude ionospheric tomography by using ITS system
| Autor: | Her-Yuan Chen, 陳鶴元 |
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| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 The Low Latitude Ionospheric Tomographic Network (LITN) suitable for the study of lare scale ionosphere structure, especially in the Taiwan area, we can study the large scale electron density variation in the equatorial anomaly region. In the past, NCU had begun to set up LITN. It consisted of six ground-based receivers spanning 20∘along Taiwan meridian (121∘E) to receiver beacon signals from the US Naval Navigation Satellite System (NNSS) with receiver JMR-1 in order to carry out the large scale experiments on two-dimensional ionospheric imaging by computerized tomography until the decommission of NNSS satellites in late 1997.Since July 2003, NCU has purchased 4 ITS30 receivers from North West Research Associates, Inc. (NWRA) and set them in Pingtung, Nantou and Taoyuan in Taiwan for the reestablishment of the NEW LITN with the hope to promote the receiving stations to other countries such as Philippines, Indonesia and so on in the near future. In this thesis, We have applied STK, IRI-model to determine the location of LEO satellite and initial electron number density. In addition, the simulation study of GPS/MET and real data inversion with the ITS receiver were accomplished. A comparison is made between our results and dynasonde data, some possible explanation were discussed. After Formosat-3, which consist of six LEO satellites and one more frequency band (1066.67MHz), entered into their orbits, we can get more data for the inversion of CIT study. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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