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  ITRF2008 : Datum Definition

Origin:

The ITRF2008 origin is defined in such a way that there are null translation parameters at epoch 2005.0 and null translation rates between the ITRF2008 and the ILRS SLR time series.


Scale:

The ITRF2008 scale is defined in such a way that there null scale and scale rate between ITRF2008 and the average of VLBI and SLR scales/rates.


Orientation:

The ITRF2008 orientation is defined in such a way that there are null rotation parameters at epoch 2005.0 and null rotation rates between the ITRF2008 and ITRF2005. These two conditions are applied over a core network (see section transformation parameters between ITRF2008 and ITRF2005)



 
ITRF Website - Jan 2016 - IGN ©