Category Archives: Under the Hood

Trimble TerraFlex Desktop add-in

Those of you who are using (or considering using) Trimble TerraFlex are most likely aware of the new release earlier this week. Included in this release is the Trimble TerraFlex Desktop add-in, an ArcMap add-in that can be used to … Continue reading

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Mean Sea Level heights in Trimble Positions

All heights collected in previous versions of Trimble Positions software were expressed as heights above WGS84 ellipsoid (HAE). The new Positions Desktop add-in 10.2.2.1 and Positions Mobile extension 10.2.0.2 add support for Mean Sea Level (MSL), also known as orthometric … Continue reading

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Coordinate Systems and Datum Transformations

As this user community knows, collecting high accuracy data requires a working knowledge of coordinate systems, or spatial references, and datum transformations.  The intent of this (long overdue) post is not to deep dive into these topics but rather to summarize how … Continue reading

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Positions Enables ArcGIS for Windows Mobile for 3D!

Out-of-the-box, ArcGIS for Windows Mobile is a 2D data collection solution.  Although you can take 3D feature classes to the field (new at ArcGIS 10.1 / Mobile 3.0), you will only ever get X/Y values for them. However, by adding … Continue reading

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The Desktop (aka Office-side) Database

The YouTube video posted earlier covers the basic installation of the Trimble Positions Desktop add-in and the creation of the desktop, or office-side, database.  However, we think it would be useful to have a brief discussion about what this database … Continue reading

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Flow of GNSS Session Data

We’ve seen some posts in the ArcGIS forums that contain questions about the flow of GNSS ‘session’ data from the field back to the office.  GNSS sessions are a combination of raw GNSS satellite measurements (required for post-processing) and “construction” … Continue reading

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