Chen Shica
Abstract
In the theory and practice of navigation, we often meet with the calculation of difference of latitude and difference of longitude. This paper approves that Mercator sailing actually conforms to middle latitude sailing if we take the shape of the earth as spheroid when calculating difference of longitude.
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In the theory and practice of navigation, we often meet with the calculation of difference of latitude and difference of longitude. This paper approves that Mercator sailing actually conforms to middle latitude sailing if we take the shape of the earth as spheroid when calculating difference of longitude.
Key concepts: Mercator projection, Longitude, Latitude, Geographic coordinate system, Geodesy, Significant difference, Geography, Geology