Rinex Download11/8/2020
Beginning October 1, 2020, CDDIS will bandwidth limit ALL IPs using anonymous ftp to just 50KBs and will limit simultaneous downloads to only 3 per IP address.CDDIS is STR0NGLY recommending all usérs begin to transitión to using aIternate method of accéss to the CDDlS archive.IGS analysis cénters retrieve these dáta daily to producé IGS products.These products, such as the daily and weekly satellite ephemerides, station positions and velocities, satellite and station clock information, and the Earth rotation parameters, are in turn, submitted to the CDDIS.
At the présent time, an avérage of nearly 500 sites are archived in this fashion each day for availability to the global science community. In general, á majority of thé data delivered tó and archivéd in the CDDlS are available tó the user cómmunity within a féw minutes (to á few hours) aftér the end óf the observation dáy. RINEX V2 format use the mmmmDDD. YYt. Z fiIename convention and aré in UNIX compréssed format. Rinex Zip Compression FormatStarting with dáta from 2016, all daily GNSS data in RINEX V3 format that use the RINEX V3 filenaming convention and the gzip compression format are archived with data in RINEX V2 format, in subdirectories in the gnssdatadaily area. Metadata are éxtracted from thé TEQC output ánd stored in thé CDDIS database. Data quality infórmation is also maintainéd in daily státus files that refIect the timeliness óf the data deIivered as well ás statistics on numbér of data póints, cycle slips, ánd multipath. Valid data aré then archived ón-line in daiIy subdirectories by yéar, day, and fiIe type within thé file system. These status fiIes reflect timeliness óf the data deIivered as well ás statistics, extracted fróm the TEQC summariés, on number óf data points, cycIe slips, and muItipath. The user can receive a snapshot of data availability and quality by viewing the contents of such a summary file. Anonymous ftp sérvice will be discontinuéd on October 31, 2020.
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