Notice: 24 Hour RINEX files are logged upon request only.

Station "OBEC" Community CORS Station Links

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1-Hour T02 Files

1-Hour RINEX Files

24-Hour RINEX Files - (see notice below)

Notice: 24 Hour RINEX files are logged upon request only.

Please with the dates you require the 24-hour RINEX files. We appreciate as much advance notice you can provide with your request however at least a 2 business day notice is required for coordination.

Other Sites of Interest

Oregon Real-Time GPS Network (ORGN) - The Oregon DOT Geometronics Unit is operating and expanding the Oregon Real-time GPS Network, a network of permanently installed, continuously operating GPS reference stations.
Online Positioning User Service (OPUS) - OPUS allows users to submit their GPS data files in RINEX format to NGS, where the data will be processed to determine a position using NGS computers and software. Each RINEX file that is submitted will be processed with respect to the 3 best national CORS sites (9 for OPUS-RS).
Global Positioning System Overview - an excellent on-line resource on the Global Positioning System by Peter H. Dana, The Geographer's Craft Project, Department of Geography, The University of Colorado at Boulder.
U.S. Coast Guard Navigation Center - Information on the status of GPS, DGPS, Loran-C and other navigational aids. This site includes information on GPS satellite launches and forecast of service outages.
National Geodetic Survey CORS NGS coordinates a network of continuously operating reference stations (CORS) throughout the United States.
NGS Products and Services
Data, software, publications and services provided by the National Geodetic Survey.


Global Navigation Satellite System (GNSS) Continuously Operating Reference Station (CORS), Eugene, ORSite Photo

Since 2001, OBEC Consulting Engineers has maintained a Global Navigation Satellite System (GNSS) Cooperative Continuously Operating Reference Station (CORS).

The original station officially came online at 920 Country Club Road in Eugene, Oregon on January 1, 2001 and the station was designated with ID "OBEC" (see below for new designation) for OBEC Consulting Engineers.  Code and carrier phase GPS data are generated and provided free of charge, in Receiver Independent Exchange (RINEX) format and Trimble proprietary DAT/T02 format.  This data is used to obtain more accurate results from a variety of GPS projects.

On November 1, 2013, station "OBEC" was decommissioned in favor of our new site "OB3C".  This decommission was due to a change in the antenna base mount.  By replacing a Leica style quick release adapter to a SECO Adjustable Tilt Monument Mount (PN: 2072-31 A) the ARP was changed.  This change required us to decommission the site due to NGS CORS Rules and Guidelines.   A new application OB3C was submitted to NGS however the application was declined due to the close proximity of another CORS station. In addition to the antenna mount, we also upgraded the previous Trimble NetRS to a Trimble NetR9 GNSS multi-constellation receiver and upgraded the previous Trimble Zephyr Geodetic antenna with a Trimble GNSS Choke Ring antenna with SCIGN short radome (TRM59800.00 SCIS).  The new antenna is permanently mounted on a concrete and block building for stability.

Note that as of November 15, 2013 the position imbedded in data files was updated from autonomous to NAD_83 (2011) (2010.0000). The position was derived by Randy Oberg with the Oregon Real-time GPS Network (ORGN) using OPUS-Projects and 7 consecutive days of data. The position is available on our reference station coordinates page in addition to the final adjustment report.

Logged data beginning November 1, 2013 will be freely available on-line using File Transfer Protocol (FTP) here at using "guest" as both username and password (less quotes).  Note: The links above have the username and password already embedded into them.

24-hour RINEX files are logged upon request only.  Please with the dates you require. We appreciate as much advance notice you can provide with your request however at least a 2 business day notice is required for coordination.

Alternatively you can concatenate 2 or more of the 1-hour RINEX files into a single file using the TEQC utility available from UNAVCO or by using the Leica SpiderQC Software Demo available from Leica.

If you have a special logging request, need assistance or have any questions, please  .

This page was last modified ?Monday, ?August ?24, ?2015.