TopoSat - GPS calculations and coordinates

[http://www.ign.fr]
[http://www.esgt.cnam.fr/fr/recherche/geoide.htm]
[http://en.wikipedia.org/wiki/Geodesy]
[http://www.swisstopo.admin.ch/internet/swisstopo/en/home/topics/survey/sys/refsys/europe.html]
[http://www.epsg.org/]
[ftp://itrf.ensg.ign.fr/pub/itrf/WGS84.TXT]
[http://itrf.ensg.ign.fr/]
[http://www.ngi.be/FR/FR2-1-2.shtm]
[http://www.esgt.cnam.fr/fr/recherche/geoide.htm]
[http://www.geod.nrcan.gc.ca/online_data_e.php]
[http://www.ga.gov.au/geodesy/sgc/wwwgps/]
[http://sopac.ucsd.edu/cgi-bin/SCOUT.cgi]
[http://igscb.jpl.nasa.gov/components/prods_cb.html]
[http://rgp.ign.fr/PRODUITS/iono.php]
[http://rgp.ign.fr/PRODUITS/tropo.php]
[http://igs.bkg.bund.de/index_ntrip.htm]
Geodesy A summary of what should be known can be found on Wikipedia Information about global and European systems Geodetic transformation parameters with OGP Surveying & Positioning Committee More details about WGS84 (G730, G873, G1150) and ITRF/ITRS coordinates Understanding the differences between "geoid" and "ellipsoid" Local (French geoid) or global model Online post-processing calculations Provided that one is able to make proper use of global coordinate systems and has dual-frequency receivers, post-processing calculations can be carried out on: - The Geoscience Australia website - The Natural Resources Canada Website - The SOPAC (Scripps Orbit and Permanent Array Center) website Precise data Broadcast data can prove to be too inaccurate for some post-processing calculations. Instead, it is possible to use: - Precise ephemeris - Ionosphere files - Troposphere files NTRIP NTRIP is a protocol allowing GPS data to be sent/received via Internet ,
GPS calculations and coordinates
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