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4 results

  • Position by Observation of a Single Body

  • Roy Williams
  • Journal:
    The Journal of Navigation / Volume 47 / Issue 1 / January 1994
    Published online by Cambridge University Press:
    21 October 2009, pp. 99-103
    Print publication:
    January 1994
    • Article
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  • Position Fixing in a Fast Moving Ship by Culmination of a Celestial Body

  • Matti A. Ranta
  • Journal:
    The Journal of Navigation / Volume 43 / Issue 2 / May 1990
    Published online by Cambridge University Press:
    21 October 2009, pp. 276-286
    Print publication:
    May 1990

  • A well-known navigational method is to determine position through observation of the highest altitude of the Sun at noon. This procedure is based tacitly on the assumption that the observed altitude is a symmetrical function of time about the highest point which appears thus in the meridian. In order to examine the accuracy of this approximation for a fast moving ship, let us consider the situation in more detail. The equations will be formulated using the standard functions in a modern pocket calculator and its application modules.