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Alex Mahrou
Alex Mahrou is a weblog covering hot topics, trends, product reviews, and lifestyle in the Geospatial industry written from the viewpoint of a working Geospatial Professional, Alex Mahrou.

Trimble GeoExplorer Review Preview

March 22nd, 2011 by Alex Mahrou

I just wanted to post a preview for my upcoming review of the GeoExplorer 6000 series.  I’ve been a little busy lately with other work (go figure.)  In my previous post, I outlined the history of the GeoExplorer Series, and promised an in-depth review.

I received my GeoExplorer last week from Seiler Instruments (Thanks Jay and Lanny!) and just finished my final test last Sunday 3/20/11.  Here is what I’ve performed for my testing….

  1. Canopy Testing: Tim Smith at the NPS loaned me his Saturday and his GPS Test course at his house in Conifer, CO for this test.
  2. Urban Canyon:  I drove around the streets of downtown Denver streaming a Polyline feature in TerraSync.  This was probably the hardest test.
  3. Quick static occupations of NGS Control around the Greater Denver Area.  Just to see how accurate this receiver would be against known control that a surveyor would reference.
  4. Relative Precision: I set out some measuring tape in Washington Park in Denver and measured set lengths of 10 feet.  I tested the VRSNow network as well as the beta test the new little known about NGS CORS NTRIP streaming service.
For all of my tests, I used VRSNow or the NGS Streaming Service.  There is so much more to share.  However I’ll just post a preview below of my Downtown Streaming test.  Trimble had a dataset that they used in their GeoExplorer 6000 series webinar for downtown.  I wanted to see just how repeatable this sort of data was.  I used an external Zephyr Antenna (Provided by Frontier Precision) and VRS.  Note: You will need the Google Earth Plugin to view the frame below.  What you are seeing below has not been edited!  Trying to pull off a polyline like this in the first pass can be a pain; that’s no longer the case with this reciever.

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