Precise Point Positioning

Update to CSRS-PPP outputs: addition of uncertainties related to epoch transformation

The Canadian Geodetic Survey of Natural Resources Canada updated the CSRS-PPP service on Thursday, October 17, 2019. This update affects the CSRS-PPP outputs if users request to have the results in NAD83(CSRS) at an epoch other than the epoch of GNSS data. In this case, a coordinate transformation is applied using the predicted velocities from the Canadian Velocity Grid and the uncertainty associated with the epoch transformation will be added to the uncertainty associated with the PPP coordinate estimation. The output files have been updated to show both the uncertainty associated with PPP estimations as well as the total uncertainty including the uncertainty due to epoch transformations, if any.

New velocity grid NAD83(CSRS)v7

View documentation about the new NAD83(CSRS) v7.0 velocity grid.

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View documentation for Precise Point Positioning

Use of Canadian Geodetic Survey products and data is subject to the Open Government Licence - Canada

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