Emlid Reach RS2+ with Tilt - Accuracy Test

You can collect building corners and other hard to reach points more easily than ever by using X-PAD's X-TILT function with any Emlid receiver, including the Reach RS2+ and Reach RX.  

X-TILT uses the sensors on your Android device for tilt compensation on your GNSS receiver.  Simply collect two shots of the same point at two different angles, and X-TILT does the rest.  Check out the video below to see how it works.

The tilted pole shots must be accurate in order to be useful for building corners and other hard to reach shots.  To test the accuracy of the X-TILT function, we compared level shots and tilted shots with points collected with a robotic total station.

Using two control points, we ran a resection with the GeoMax Zoom95 Robotic Total Station.  Then, we collected ten points with the Zoom95 in order to compare the GNSS shots taken.  

Next the Reach RS2+ was used by leveling the rod and storing points at each of the ten locations.  Finally the RS2+ was used again, this time tilting the rod and using the X-TILT function to compensate for the tilt.  

The root mean squared error in feet for the RS2+ without tilt in the Northing, Easting and Elevation, was 0.04', 0.10', and 0.03' respectively.

The root mean squared error in feet for the RS2+ using X-TILIT in the Northing, Easting and Elevation, was 0.02', 0.08', and 0.03' respectively.

The results of this test show that the RS2+ maintains high accuracy using the tilt compensation of the X-TILT function.  

The shot-by-shot results are shown below.