碩士 / 國立成功大學 / 電機工程學系 / 103 / Nowadays, satellite navigation techniques have been widely applied in our daily lives. At the same time, spoofing attacks toward satellite navigation have also been advanced. Therefore, the authentication of satellite navigation signals is of importance. The thesis focuses on developing a mechanism of GPS (Global Position System) signal authentication. This mechanism uses two software-defined radio receivers and improve the existing methods. In fact, this method is more flexible than the existing ones. The following are the advantages of this mechanism: (1) it can reduce the sampling rate while receiving GPS signals; (2) two receivers would not be required to have identical sampling rate; and (3) it significantly reduces the amount of data to be stored during signal processing. Furthermore, in the practical application of signal authentication, there is a trade-off between warning and the influence level on GPS positioning. To decrease the probability of false alarm, this study simulates the situation that the receiver is cheated; these experiments investigate the relationship between the influence level of GPS signals and the positioning results. By using the proposed signal authentication algorithm, the positioning results become more reliable.
| Identifer | oai:union.ndltd.org:TW/103NCKU5442096 |
| Date | January 2015 |
| Creators | I-FanWang, 汪羿帆 |
| Contributors | Jyh-Ching Juang, 莊智清 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 60 |
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