Data Service

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공간적 ASF 보정지도 제작
  • ASF Map is a correction map for the propagation delay time generated in the propagation path of the land area. The actual measurement at the red point in the figure is calculated by inverse double linear interpolation to estimate the ASF value of the grid edge, and whether or not ASF is corrected is a major factor in determining the navigation performance of the eLoran receiver.