Research Article
May 1971
Solar Astronavigation in High Latitudes
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VIEW THE REPLYPublication: Journal of the Surveying and Mapping Division
Volume 97, Issue 1
Abstract
Navigator–surveyors with traversing expeditions in the Arctic or Antarctic have two basic methods of astronavigation available to them: zenith angle observations or azimuth angle observations. A major constraint applicable to either method is the fact that the sum may be the only consistently detectable target during the 24-hr long polar day. An analytical analysis is used to compare the two methods for similar observing configurations and comparable viewing errors, and the conclusion is made that, analytically, the zenith method is superior for polar astronavigation. To aid the polar navigator when he must determine positions to a given precision, a means of ascertaining an observing configuration which will yield the desired geometric results is suggested. Also included is a method for determining the observation error which reflects, for a given individual, actual conditions encountered in polar observations.
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Published In
Journal of the Surveying and Mapping Division
Volume 97 • Issue 1 • May 1971
Pages: 27 - 38
Copyright
© 1971 American Society of Civil Engineers.
History
Published in print: May 1971
Published online: Feb 12, 2021
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Authors
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Gerald W. Johnson, M.ASCE
Asst. Prof. of Civ. Engrg., Univ. of Minnesota, Minneapolis, Minn.
James L. Clapp, M.ASCE
Assoc. Prof. of Civ. Engrg., Univ. of Wisconsin, Madison, Wis.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.