NRCan's PPP (Precise Point Positioning) is a free online post-processing service that allows GPS users in Canada (and abroad) to compute better-accuracy positions from their GPS raw observation data.
Compute better-accuracy positions from GPS raw observation data
Submit RINEX raw data online and receive via email centimetric-accuracy corrected coordinates (latitude, longitude, ellipsoid height) in either the NAD83(CSRS) or the ITRF reference system.
CSRS-PPP can now produce NAD83(CSRS) coordinates at the epoch of your choice:
the 2 different epochs adopted by Canada's provincial geodetic agencies:
- 1997.0: BC(Vancouver Island), MB, NB, NL, NS, ON, PEI, QC, SK
- 2002.0: GSD, AB, BC(Mainland), NT, NU, YK
- the epoch of the GPS data
- a user-defined epoch
CSRS-PPP uses a velocity grid that accounts for crustal motion over time (mostly vertical motion due to post-glacial rebound).
PPP now also applies the HTv2.0 height transformation and produces orthometric (mean-sea-level) heights compatible with CGVD28 elevations.
PPP can process raw GPS data from single or dual-frequency receivers in either Static mode (output is a single position) or Kinematic mode (each epoch is corrected individually).
Note: CSRS-PPP can now process your static or kinematic RINEX GPS data to produce NAD83-CSRS (or ITRF) positions 90 minutes after acquisition using NRCan hourly GPS orbits and clocks.