Design and construction of a portable high resolution positioner using star patterns
Today positioning and finding the direction of true North has a significant role in our life. In these days GPS has presented a complete answer to the problem. But sometimes our access to the communication systems will be limited. In this situation what should we do? We present a method using star p...
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| Veröffentlicht in: | Astrophysics and space science 2019-05, Vol.364 (5), p.1-10, Article 75 |
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| container_title | Astrophysics and space science |
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| creator | Izadmehr, Meysam Ghomi, Mehdi Khakian |
| description | Today positioning and finding the direction of true North has a significant role in our life. In these days GPS has presented a complete answer to the problem. But sometimes our access to the communication systems will be limited. In this situation what should we do? We present a method using star patterns to obtain our position (longitude and latitude) and the North direction with an accuracy of about half an arcminute. For the accuracy, some corrections like the refractive index of the atmosphere, relativistic aberration and some other cases were considered in spherical geometry of the sky. The exposure time of the photograph of the sky is 0.50 s. With these considerations, we obtained accuracies of
0.503
′
(932 m) in latitude, and
0.816
′
(1510 m) in longitude and North direction. Among the main goals of the design were a reasonable price and portability of the instrument, which is completely achieved. |
| doi_str_mv | 10.1007/s10509-019-3565-5 |
| format | Article |
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0.503
′
(932 m) in latitude, and
0.816
′
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0.503
′
(932 m) in latitude, and
0.816
′
(1510 m) in longitude and North direction. Among the main goals of the design were a reasonable price and portability of the instrument, which is completely achieved.</description><subject>Astrobiology</subject><subject>Astronomy</subject><subject>Astrophysics</subject><subject>Astrophysics and Astroparticles</subject><subject>Cosmology</subject><subject>Latitude</subject><subject>Longitude</subject><subject>Observations and Techniques</subject><subject>Original Article</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Refractive index</subject><subject>Refractivity</subject><subject>Sky</subject><subject>Space Exploration and Astronautics</subject><subject>Space Sciences (including Extraterrestrial Physics</subject><subject>Star maps</subject><issn>0004-640X</issn><issn>1572-946X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kE1LxDAQhoMouK7-AG8Bz9FJ06TJUdZPWPCywt5C0qbdLmtSk_Tgv7drBU-eZoZ53hl4ELqmcEsBqrtEgYMiQBVhXHDCT9CC8qogqhTbU7QAgJKIErbn6CKl_TQqoaoF2jy41HceG9_gOviU41jnPngcWmzwEGI29uDwru92OLoUDuPPdgipPzYu4jH1vsMpm4gHk7OLPl2is9Yckrv6rUv0_vS4Wb2Q9dvz6-p-TWpGRSZlYwuojLWsrZRta-tAOuHKRkquOKd1qSrbNEy2UtpKqok31LROMGoaZoEt0c18d4jhc3Qp630Yo59e6qKgQjFZgJgoOlN1DClF1-oh9h8mfmkK-ihPz_L0JE8f5Wk-ZYo5kybWdy7-Xf4_9A3srnPq</recordid><startdate>20190501</startdate><enddate>20190501</enddate><creator>Izadmehr, Meysam</creator><creator>Ghomi, Mehdi Khakian</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L7M</scope><scope>M2P</scope><scope>P5Z</scope><scope>P62</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><orcidid>https://orcid.org/0000-0003-0206-4668</orcidid></search><sort><creationdate>20190501</creationdate><title>Design and construction of a portable high resolution positioner using star patterns</title><author>Izadmehr, Meysam ; 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In these days GPS has presented a complete answer to the problem. But sometimes our access to the communication systems will be limited. In this situation what should we do? We present a method using star patterns to obtain our position (longitude and latitude) and the North direction with an accuracy of about half an arcminute. For the accuracy, some corrections like the refractive index of the atmosphere, relativistic aberration and some other cases were considered in spherical geometry of the sky. The exposure time of the photograph of the sky is 0.50 s. With these considerations, we obtained accuracies of
0.503
′
(932 m) in latitude, and
0.816
′
(1510 m) in longitude and North direction. Among the main goals of the design were a reasonable price and portability of the instrument, which is completely achieved.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10509-019-3565-5</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0003-0206-4668</orcidid></addata></record> |
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| ispartof | Astrophysics and space science, 2019-05, Vol.364 (5), p.1-10, Article 75 |
| issn | 0004-640X 1572-946X |
| language | eng |
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| subjects | Astrobiology Astronomy Astrophysics Astrophysics and Astroparticles Cosmology Latitude Longitude Observations and Techniques Original Article Physics Physics and Astronomy Refractive index Refractivity Sky Space Exploration and Astronautics Space Sciences (including Extraterrestrial Physics Star maps |
| title | Design and construction of a portable high resolution positioner using star patterns |
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