News: NAD83(CSRS) v7
The Canadian Geodetic Survey (CGS) is releasing a new version of NAD83(CSRS) (version 7.0). This realization:
- is compatible with all previous versions of NAD83(CSRS);
- uses the same 2010.0 coordinate reference epoch as NAD83(CSRS) v6;
- provides a more accurate realization of NAD83(CSRS) for both coordinates and velocities of CACS and CBN stations;
- Includes a new velocity grid for crustal motion in 3D which is implemented in CSRS-PPP and TRX.
The coordinate differences with NAD83(CSRS) v6 at epoch 2010.0 are generally less than 1cm while the velocity differences are of the order of 0.5-1 mm/yr.
Geodetic reference systems stem from the need to provide a consistent and integrated reference surface for data analysis. Applications include surveying, mapping, navigation, remote sensing and mineral exploration amongst others. At the national level, NRCan maintains the Canadian Spatial Reference System (CSRS), through the use of the North American Datum of 1983 (NAD83CSRS), which is the adopted standard in Canada.
This site provides end-users with the geodetic data and tools they need for a range of commercial and private uses. One of the most popular services is the online CSRS-PPP service, which provides centimetre-accuracy positioning in either NAD83(CSRS) or ITRF using GNSS technologies.