![]() ![]() Starting with day of year 329/2019, the CNAV files are provided with long RINEX 3 file names in the operational directories for merged navigation files at CDDIS, e.g. CNAV data collected since the start of the pre-operational CNAV are made available on a daily basis in annual directories of the MGEX data archive at CDDIS for 2014 to 2019. The routine transmission of CNAV data started on Apand daily uploads of navigation data are performed since Dec. A detailed description of the data set is provided in a dedicated ReadMe file. The binary raw data as well as post-processed RINEX-style navigation files are made publicly available through the CDDIS and can be accessed in the June 2013 CNAV campaign direcory. The test involved all fully operational Block IIR-M and IIF satellites transmitting L2C and, in part, L5 signals.Īs part of the MGEX project, CNAV navigation data were collected during this campaign by the German Aerospace Center (DLR) and the University of New Brunswick (UNB) with a total of five globally distributed multi-GNSS monitoring stations. ![]() CNAVīetween June 15 and 29, 2013, the GPS Directorate conducted a first live transmission of CNAV navigation messages as described in the L2C L5 CNAV Test Plan. A graphical constellation chart along with a status table is maintained by the University of New Brunswick.Current updates on the service availability of individual satellites are provided in Notice Advisory to Navstar Users (NANU) messages, which are likewise available from the US Coast Guard. Information on the current status of the GPS constellation is available on the web sites of the US Coast Guard. ![]()
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