GPS Base Station Upgrade

We have completed installing our new Trimble NetR5 GPS Base Station. You can retrieve T01 log files at: http://www.ci.yakima.wa.us/services/gps/t01.asp You can also retrieve files for post processing at the Washington State Reference Network. If you are not a member click on the guest login and proceed to the RINEX Shop. You can select the dates and times for the desired observations.

Background Information

The City of Yakima owns and operates a GPS base station for doing RTK surveys of its infrastructure. In December of 1998 the City of Yakima entered into an agreement with Central Washington GIS Partnership to provide a community base station. The Central Washington GIS Partnership bought the software necessary for this service. The City of Yakima provides the hardware and this web site to post the data sets.

Station Information

• Latitude: 46 36 17.853246 North
• Longitude: 120 30 18.174138 West
• Horizontal Datum: WGS84
• Elevation: 344.392 meters above mean sea level
• Receiver: Trimble NetR5
• Tracking epoch: Position at 5 seconds
• Antenna Location: City Hall, Yakima, Washington

Data Access Information

• Data is available in Trimble DAT and RINEX formats. Other formats can be made available.
• Data is only available from this web site.
• Filename: COYYMMDDHH.ZIP where COY=City Of Yakima; Y=year; MM= month; DD=day; HH=hour in GPS time. All files are in ZIP file format. The file length is one hour.
• Data is retained on the web site for 28 days. (There is no archive beyond 28 days)
• Data is available 24 hours and day, 7 days a week. File transfer is 2 minutes after the hour.

Contact Information

• Contact person: Tom E. Sellsted, Supervising Senior Analyst
• Address: City of Yakima, 129 N 2nd St, Yakima, Washington, 98901
• Email Address: Tom E Sellsted