Date: Wed, 21 Jan 2009 13:46:17 -0500 From: "Jim.Ray" Subject: [IGSMAIL-5888]: IGL SP3 header change To: IGSMail Reply-to: jim.ray@noaa.gov Message-id: <49776D79.8080309@noaa.gov> Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit User-Agent: Thunderbird 2.0.0.19 (Windows/20081209) Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 21 Jan 10:46:18 PST 2009 Message Number 5888 ****************************************************************************** Author: Jim Ray A very longstanding format error in the IGS GLONASS SP3 product files -- those with names of the form iglWWWWd.sp3 -- was recently reported to us. Header line 13 of each SP3 file has read: %R G cc GPS ccc cccc cccc cccc cccc ccccc ccccc ccccc ccccc whereas the correct syntax should be: %c R cc GPS ccc cccc cccc cccc cccc ccccc ccccc ccccc ccccc where R/G in column 4 signifies "GLONASS" or "GPS" respectively. It seems that this error has existed for at least several years. Evidently most user software does not actually pay close attention to this comment line. Unless we hear immediate objections, this error will be fixed in the IGLOS orbit products for week 1513, which will be distributed tomorrow (22 Jan 2009). We thank Steve Hilla for bringing this error to our attention.