| Autor: |
Mark L. Psiaki, Brien Flewelling, Shawn Hackett |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Proceedings of the 31st International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2018). |
| ISSN: |
2331-5954 |
| DOI: |
10.33012/2018.16067 |
| Popis: |
A new method of terrestrial navigation is developed, one that derives position information from laser-induced fluorescence of atomic Sodium in the Earth’s upper atmosphere. This concept has the potential to provide a backup or alternative to GPS and other Global Navigation Satellite System positioning and timing services. This new navigation method uses a camera to observe fluorescing line segments in the Sodium layer that are excited by a guidestar Sodium laser which is commonly used to adjust adaptive optics. The measured directions to points on 4 or more independent guide-star line segments have the potential to determine 3D user position to an accuracy on the order of 10 m or better. The method is insensitive to uncertainty about which point or points along a given guide-star line segment are measured by the system. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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