There was a magnitude 3 earthquake in CA at noon PST on 12/18/2017. Are your observations before and after that time? Edit: I see conflicting/supporti...

Dave, I would like to get a look at your two static RINEX files, as there may be something interesting to learn there. Paul in PA

There are limitations to a single base station that are best overcomer by longer occupations. The advantages to OPUS are multiple bases. The advantage...

OK, I assume you have an RTK base set up but need to get a point?ÿ from somewhere where your base is not talking to the receiver. For that you need to...

Probable error can be estimated by analyzing the data observation steps with all possible setup errors without ever making an observation. Actual erro...

RTK is a nearby solution from an already resolved GPS coordinate point. The base transmits a correction assuming that the coordinates were it is sitti...

Depending on the Bench Mark there my also be one or more nearby?ÿAzimuth Marks. One of those may be sufficient to establish a bearing to the Bench Mar...

Big Highway Project is typically prevailing wage and the overall RFP usually points out the differential pay required. However if you are a company pr...

I am with Jim Frame, occasionally a file needs tweaking to pass OPUS muster. I use WINteqc when I need teqc. Paul in PA ?ÿ

?ÿ While I am happy with Win 7 and also use teqc, I have no clue on what PowerShell is or how it could allegedly improve my life. Please enlighten me....

It is quite clear that early surveyors understood that a monument set on a new line closing to an existing line does not control the existing line. In...

8 receivers for 15 control points plus a benchmark? You are selling your project short with 2 hour observations. In one day you could observe everythi...