Bernese GNSS Software Version 5.2 Tutorial

1.2 Directory StructureThe directory${P}/INTRO/GEN/ contains copies of files from the${X}/GEN directory, whichare used by the processing programs. If you want to view these files, please use those in yourcampaign and not the ones in the ${X}/GEN directory to prevent potential interferenceswith your colleagues.${P}/INTRO/GEN/ CONST. DATUM. GPSUTC. POLOFF.RECEIVER.SATELLIT.I08 PCV.I08 I08.ATXSAT_2010.CRX SAT_2011.CRXIAU2000R06.NUT IERS2010XY.SUB OT_FES2004.TID TIDE2000.TPOEGM2008_SMALL. s1_s2_def_ce.datSINEX. SINEX.PPP SINEX.RNX2SNXIONEX. IONEX.PPP1.2.3 Input Files for the Processing ExamplesAtmosphere files ATMThe input files in this directory are global ionosphere models in the Bernese format obtainedfrom the IGS processing at CODE. They will be used to support the phase ambiguityresolution with the QIF strategy and to enable the higher order ionosphere (HOI)corrections.General files GENThese general input files contain information that is neither user– nor campaign–specific.They are accessed by all users, and changes in these files will affect processing for everyone.Consequently, these files are located in the ${X}/GEN directory. Table 1.3 shows the listof general files necessary for the processing example. It also shows which files need to beupdated from time to time by downloading them from the anonymous ftp–server of AIUB(http://www.aiub.unibe.ch/download/BSWUSER52/GEN).Each Bernese processing program has its own panel for general files. Make sure that youuse the correct files listed in Table 1.3 .Grid files GRDIn this directory the grid files *.GRD are collected. To apply for instance the VMF1 tropospheremodel (a priori information from European Centre for Medium-Range WeatherForecasts (ECMWF) and Vienna mapping function) you need a grid with the necessarycoefficients.Orbit files ORBThe precise orbits in the files *.PRE are usually the final products from CODE analysiscenter containing GPS and GLONASS orbits from a rigorous multi–GNSS analysis. Alternativelyalso the combined final products from the IGS can be used. They do not containorbits for the GLONASS satellites. The combined GLONASS satellite orbits from the IGSare available in IGL–files. Both precise orbit files need to be merged for a multi–GNSSanalysis.The corresponding EOP are given in weekly files with the extension *.IEP (takecare on full consistency with the orbit product).Furthermore, the directory contains monthly means for the DCB.Bernese GNSS Software, Version 5.2 Page 7