The GPS Toolbox: ITRF Transformations

 
 
Jan Kouba  
Geodetic Survey of Canada  
Natural Resources Canada (NRCan)  
616 Booth Street  
ottawa, Ontario, Canada KIA 0E9  
 
Fortran 77 source code for transforming GPS orbit files in SP3 format between different realizations of ITRF's used by the International GPS Service (IGS) since 1994. The code can also be used for transforming a set of station coordinates at the same epoch to and from different ITRF's. Optionally, an ERP file in the IGS ERP format can be transformed to and from different ITRF's. The related technical paper was published in GPS Solutions, Volume 5, Number 3, Winter 2002.  
 

Link to the Geodetic Survey of Canada website (source code in file trnfsp3n.f).

 
 
 
 
 
 
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