Page 131 - Electronic Navigation Cyber Book
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VDOP          Vertical dilution of precision.
           VMG           Velocity made good.
           WADGPS        Wide area differential GPS. An experimental system for
                         improving the accuracy of GPS fixes globally.
           WGS-84        World Geodetic Survey 1984.
           XDOP          Cross-track dilution of precision.
           XTE           Cross-track error.






























































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