****************************************************************************** BSW Electronic Mail 06-Apr-2004 17:10:07 CET Message Number 0186 ****************************************************************************** Author: CODE AC Team Subject: CODE high rate clocks Dear colleagues, the CODE analysis center started to generate high-rate (30-second) satellite clocks on a routine basis for the rapid as well as for the final product. All clock-RINEX files delivered to the IGS contain high-rate clock corrections for all GPS satellites starting with doy 095/2004 for the rapid, and with doy 094/2004 for the final product submissions. The clock corrections are based on an efficient phase-consistent interpolation of 5-minute precise clock results using phase time differences. Data from 90 stations (rapid) resp. 120 stations (final) are used. Such interpolated clock offset values are indicated with blank rms fields in the clock-RINEX files. Validation using precise point positioning showed that the quality of these clock interpolations is comparable with that of the original 5-minute clock values, which are included (unchanged) in the clock- RINEX files. The clock RINEX files from the final analysis will be available at ftp://cddisa.gsfc.nasa.gov/pub/gps/products/ wwww/codwwwwd.clk.Z and at our anonymous ftp server ftp://ftp.unibe.ch/aiub/CODE/ yyyy/CODwwwwd.CLK.Z (final product) ftp://ftp.unibe.ch/aiub/CODE/ CODwwwwd.CLK_R (rapid product) Files from the rapid analysis are replaced as soon as final products are available. Final clock RINEX files will be replaced on our server by high rate clock files back to doy 024. For BSW users, final high-rate GPS satellite clocks will be available in Bernese format at ftp://ftp.unibe.ch/aiub/BSWUSER/ORB/ yyyy/CODyyddd.CLK.Z starting with next week. Best regards The CODE AC Team [Mailed from: Urs Hugentobler ]