Date: Mon, 30 Oct 2000 16:47:21 -0800 (PST) From: Michael B Heflin Message-Id: <200010310047.QAA14806@eiffel.jpl.nasa.gov> To: SCIGN@IGSCB.JPL.NASA.GOV Subject: [SCIGN-860] Near Real Time Products from JPL Sender: owner-scign Precedence: bulk ****************************************************************************** SCIGN Electronic Mail 30 Oct 16:47:22 PST 2000 Message Number 860 ****************************************************************************** Author: M B Heflin Near real time GPS orbit and clock solutions with 15 minute latency are now produced at JPL with the Real-Time GIPSY (RTG) software. The new products can be found at ftp://sideshow.jpl.nasa.gov/pub/15min. The directory contains two sp3 files that are updated every 15 minutes. The file named 15min.sp3 contains the 15 most recent 1 minute orbit and clock estimates. The second file named --
.sp3 contains the most recent entries for that day and results from the previous day. ( is the 4-digit year, is the 2-digit month, and
the 2-digit day of month.) Comparisons with our current final IGS orbits show agreement at the level of 30-40 cm 3DRMS. These products are still experimental. In the near future we intend to provide Earth orientation parameters and ECI representation of the products in support of GIPSY users.