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There is the paper "Transformations between NAD83 (2011) and WGS84 (G1674)" from the US NGS detailing the process of converting NAD83 data to WGS84 data.


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Short answer is yes. You need to convert from your coordinates' native reference frame to the NAD83 realization's reference frame, then possibly add an adjustment. In the case of NAD83(CSRS), which I use, there are 3 steps: Native RF -> ITRF96(1997.0) ITRF96 (1997.0) -> NAD83(CSRS) Grid shift Steps 1 and 2 require the Helmert transformation. Step 3 uses ...



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