I am doing my undergraduate thesis. My topic is comparing different troposphere models for modelling GPS data. The problem is that I don't have meteorological data or water vapour radiation data. I'm done with data processing using the Bernese software. The products I have are the coordinates, interger ambiguity resolution file file, helmert transformation file (transforming from Trignet to IGS). I also have the tropospheric delay file. The data was observed for a week and processed using five different processing strategies in the Bernese software. Any advise on this will be much appreciated. Thank you in advance!
You can use reanalysis data for the water vapour. ERA or NASA's MERRA are both good options. Here's a link to the MERRA data: http://mirador.gsfc.nasa.gov/cgi-bin/mirador/collectionlist.pl?search=1&page=1&keyword=merra&startTime=&endTime=&location=&submit=Search+GES-DISC&event=
You'll want the 3D files. No one file will have everything you want, as you need water vapour, pressure, and temperature to calculate the tropospheric refractive index for the UHF band.
Yôu can , but thé précision Will n't good ! Wiithout comparaison diferent sources.
Thank you David and Seddik for answering my question. I did get data from Souminet website whereby they have calculated the tropospheric delay using Precipitable Water Vapour(PWV). I also now have the IGS calculated troposphere delay as well. Now I have to work on my analysis
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