DOI 10.17586/0021-3454- 2021-64-5-412-421
UDC 520.42:527:519.7
METHOD FOR MEASURING A CELESTIAL BODY HEIGHT FROM THE SKY DIGITAL PHOTOGRAPH
Admiral Makarov State University of Maritime and Inland Shipping, Department of Inland Waterways Navigation;
S. A. Zakharov
St. Petersburg State Marine Technical University, Department of Design and Technology of Production of Marine Submersibles and Robots; Senior Lecturer
V. A. Sibilev
Admiral Makarov State University of Maritime and Inland Shipping, Department of Inland Waterways Navigation;
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Abstract. The widespread use of global navigation satellite systems (GNSS) has made possible to identify the dangers of its use. In the merchant shipping GNSS are only positioning device and any its interruptions becomes high threat to the safety of navigation. A solution to the problem by using celestial navigation is proposed. A new method for measuring the height of a celestial body based on processing of a digital photograph of the sky is considered. Mathematical models and computational algorithms for photos processing are described, and the results of their testing with imitation examples are presented..
Keywords: navigation safety, celestial navigation, Hough transform, digital photography, raster image, horizon, star height, identification
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