ZHAO Jianhu, ZHANG Hongmei, John E Hughes Clarke. Establishment of Local Seamless Vertical Datum[J]. Geomatics and Information Science of Wuhan University, 2006, 31(5): 448-450.
Citation: ZHAO Jianhu, ZHANG Hongmei, John E Hughes Clarke. Establishment of Local Seamless Vertical Datum[J]. Geomatics and Information Science of Wuhan University, 2006, 31(5): 448-450.

Establishment of Local Seamless Vertical Datum

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  • Received Date: January 15, 2006
  • Revised Date: January 15, 2006
  • Published Date: May 04, 2006
  • A two-step transformation,which is from ellipsoidal height to orthometric height then to chart height,is studied.For the first transformation,two kinds of methods are studied.For the step 2,a cross-section linear interpolation method is developed for ensuring these chart datums continuous variation and the transformation from orthometric height to chart height.The above studies are applied for Saint John River,and corresponding models are developed.An on-the-fly GPS tidal level measurement was implemented in the river segment for testing above models.Which proves these methods and theories are credible and feasible in actual applications.
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