From jimr at ngs.noaa.gov Tue Sep 13 13:27:24 2005 From: jimr at ngs.noaa.gov (Jim Ray (NGS 301-713-2850 x112)) Date: Tue, 13 Sep 2005 16:27:24 -0400 (EDT) Subject: [IGSMAIL-5210]: 1-s versus 5-s data ? Message-ID: <200509132027.QAA11878@ness.ngs.noaa.gov> ****************************************************************************** IGS Electronic Mail 13 Sep 13:28:04 PDT 2005 Message Number 5210 ****************************************************************************** Author: Jim Ray NGS is in the process of installing a new GPS station (BRFT) at Fortaleza to replace the old station (FORT). Data will be reported back in hourly files as well as daily 24-hr files. (We hope to implement real-time data transfer too.) For the hourly files, Miranda Chin has tested hourly transfers with 1-s sampling, which seems to work fine so far. But we are not sure that the Internet connection can sustain such a load continuously. Can anybody provide a strong rationale to prefer either 1-s or 5-s sampling for the near-real-time hourly files? For instance, would ionospheric science or scintillation studies be enhanced using 1-s samples from this equatorial site? Any advice you can provide would be appreciated. Thanks, --Jim