Data received by a computer from an Omega navigation aid receiver, is converted by fitting of a mathematical model against those sky-wave correction factors associated with area mapping, as prepared and published by the Defense Mapping Agency, Hydrographic Center. Omega receivers produce digital outputs which reflect geographic positions of the receiver, from radio waves propagated from fixed master stations. For each mapping area, an offline data analysis program evaluates and stores five data words, which define a model for the given sky-wave correction factor. An online program selects that stored model appropriate to the present position estimated for own ship. The selected model is exercised, as required, to determine the subcorrection factor for each of the Omega stations then in use by the Omega receiver. These subfactors are combined in standard Omega sequence, to deliver the correction factors applied to the lines of position determined by the Omega receiver.

  • Corporate Authors:

    International Business Machines Corporation

    Boca Raton, FL  United States 
  • Authors:
    • Marazas, G A
  • Publication Date: 1974-10

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00084881
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: May 19 1975 12:00AM