From noll at CDDIS.GSFC.NASA.GOV Mon Feb 26 05:50:35 2001 From: noll at CDDIS.GSFC.NASA.GOV (Carey Noll) Date: Mon, 26 Feb 2001 8:50:35 -0500 Subject: [IGSMAIL-3213]: New "hourly" broadcast ephemeris files at CDDIS Message-ID: <010226085035.ec7@CDDIS.GSFC.NASA.GOV> ****************************************************************************** IGS Electronic Mail 26 Feb 05:52:54 PST 2001 Message Number 3213 ****************************************************************************** Author: Carey Noll/CDDIS The CDDIS has begun to generate combined broadcast ephemeris files on an hourly basis from all hourly navigation files archived at the CDDIS. This file, denoted /gps/nrtdata/yyddd/hourddd0.yyn.Z (ddd is the 3-digit day of year, yy is the 2-digit year), contains all broadcast messages with the TOE of the day ddd that are available when the file is created at the top of the hour. The file is updated each hour with new navigation messages. At the end of the UTC day, when the final version of the file is generated, the file is copied to the /gps/gpsdata/yyddd/yyn and /gps/brdc/yyyy directories and becomes the "daily" broadcast ephemeris file (denoted as brdcddd0.yyn.Z). Thanks to Werner Gurtner for generating the software and process for creating these new files. Regards, Carey.