Le 20/05/2010 06:29, John Smith a écrit : > Here's a sample generated from NASA site log files: > > <node id='-1' visible='true' lat='44.463944444444' lon='26.125738888889'> > <tag k='fixme' v='not_reviewed' /> > <tag k='man_made' v='monitoring_station' /> > <tag k='monitoring:gps' v='yes' /> > <tag k='monitoring:glonass' v='yes' /> > <tag k='iers_domes_number' v='11401M001' /> > <tag k='antenna' v='LEIAT504GG LEIS' /> > <tag k='receiver' v='LEICA GRX1200GGPRO' /> > <tag k='name' v='Bucuresti / Romania' /> > <tag k='ele' v='143.2' /> > <tag k='source:url' > v='http://igscb.jpl.nasa.gov/igscb/station/log/bucu_20100503.log' /> > </node> > > Just to make things more interesting, the lat/lon given for some/all > sites are in country or region specific datums, eg Australian > locations use GDA94, but the site log file can't automatically be > parsed for which datum is used. > > _______________________________________________ >
Arrgh... Compared with the monitoring sites with other purposes (nice aircraft noise tracking site by the way), I thought that at least for the positioning systems monitoring sites, precise lat/lon should be available. Looking at the Toulouse log file (and Bucarest's as well), it seemed to use ITRF reference system (International Terrestrial Reference Frame - http://itrf.ensg.ign.fr/), apparently fairly close to WGS84 for OSM purposes (ftp://itrf.ensg.ign.fr/pub/itrf/WGS84.TXT). Best, Jean-Guilhem _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
