THE TRANSPORTATION OF HYPERBOLIC TO GEOGRAPHICAL COORDINATES BY A GRADIENT METHOD

Position fixing with the Omega hyperbolic navigation system requires the use of charts or tables unless the receiver itself is able to display the geographical coordinates directly. Plotting position lines on Omega charts is a simple operation but owing to their small scale (1:2, 187, 400 for the Mediterranean area) it is impossible to obtain a satisfactory accuracy of fix, while the use of Omega tables becomes particularly laborious when frequent fixes are required. A simpler method for position fixing, here called the 'gradient method', is based on the transformation of Omega reading variations into variations in the geographical coordinates. The method has the following advantages: (i) continuous position fixing through simple computation, made easier by a desk calculator; (ii) considerably reduced errors in comparison with the usual transformation methods; (iii) the measurements are linearized, so that they may be used in an integrated navigation system.

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  • Corporate Authors:

    Royal Institute of Navigation

    1 Kensington Gore
    London,   England 
  • Authors:
    • Nastro, V
  • Publication Date: 1975-7

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Filing Info

  • Accession Number: 00099887
  • Record Type: Publication
  • Source Agency: Royal Institute of Navigation
  • Files: TRIS
  • Created Date: Sep 30 1975 12:00AM