Change Request
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NRCan uses biquadrilateral interpolation for geoid models.Open
Change Request Details
Change Id: 2025.021
Report Date: February 27, 2025
Date Closed: March 1, 2025
Reporter: Kevin Kelly; ESRI
Request: Correct Canada velocity grid interpolation method.
Comment: NRCan uses biquadrilateral interpolation for geoid models.
Action: For method 1141, amended remarks. (Method is associated with Point Motion Operations 8676, 9483 and 10707). In GN7-2, interpolation technique for NRCan velocity grids changed to bilinear.