Vector solution 2 CoP (com.Vector_solution_2_CoP) on Google Play

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Celestial navigation.Fix by two circles of position: vector solution.With a sextant take two altitudes, correct them and obtain the observed altitudes: Ho.Take the Nautical Almanac and find the coordinates of the celestial bodies: GHA, declination.Use this app to calculate the two solutions, and to plot the circles of position, or circles of equal altitude on a google maps.Running fix:- The app moves the first sight to the time of the second, taking into account the motion of the observer.Method explained in the papers:- Vector Solution for the intersection of two Circles of Equal Altitude. (Andrés Ruiz González. Journal of Navigation 2008, 61:355-365. The Royal Institute of Navigation).- Use of rotation matrices to plot a circle of equal altitude. (Andrés Ruiz. JOURNAL OF MARITIME RESEARCH, Vol 8, Nº3, 2011)Available on the author's website.