SkyPole—A method for locating the north celestial pole from skylight polarization patterns
| Autor: | Kronland-Martinet, Thomas, Poughon, Léo, Pasquinelli, Marcel, Duché, David, Serres, Julien, Viollet, Stéphane |
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| Přispěvatelé: | Aix Marseille Université (AMU), Institut des Sciences du Mouvement Etienne Jules Marey (ISM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Centre National de la Recherche Scientifique (CNRS), Julien R Serres a reçu un financement de l'Initiative d'Excellence d'Aix-Marseille Université - A*Midex, un programme français d'Investissements d'Avenir AMX-21-ERC-02 et AMX-20-TRA-043 qui l'a aidé à mener à bien ce projet. Ce travail de recherche a également été soutenu par la Région SUD Provence-Alpes-Côte d'Azur (PACA) (Grant \#2021/08135). Thomas Kronland-Martinet a été soutenu par un contrat inter-écoles doctorales d'Aix Marseille Université. |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
geolocation
celestial compass ACM: I.: Computing Methodologies/I.4: IMAGE PROCESSING AND COMPUTER VISION [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic polarized vision GPS-denied environment celestial navigation [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing [SPI.AUTO]Engineering Sciences [physics]/Automatic |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America Proceedings of the National Academy of Sciences of the United States of America, 2023, 120 (30), ⟨10.1073/pnas.2304847120⟩ |
| ISSN: | 0027-8424 1091-6490 |
| DOI: | 10.1073/pnas.2304847120⟩ |
| Popis: | International audience; True north can be determined on Earth by three means: magnetic compasses, stars, and via the global navigation satellite systems (GNSS), each of which has its own drawbacks. GNSS are sensitive to jamming and spoofing, magnetic compasses are vulnerable to magnetic interferences, and the stars can be used only at night with a clear sky. As an alternative to these methods, nature-inspired navigational cues are of particular interest. Celestial polarization, which is used by insects such as Cataglyphis ants, can provide useful directional cues. Migrating birds calibrate their magnetic compasses by observing the celestial rotation at night. By combining these cues, we have developed a bioinspired optical method for finding the celestial pole during the daytime. This method, which we have named SkyPole, is based on the rotation of the skylight polarization pattern. A polarimetric camera was used to measure the degree of skylight polarization rotating with the Sun. Image difference processes were then applied to the time-varying measurements in order to determine the north celestial pole’s position and thus the observer’s latitude and bearing with respect to the true north. |
| Databáze: | OpenAIRE |
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