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Point cloud collected without backsight

Question asked by Matthew Nolasco on Apr 15, 2019

Two point clouds were collected using an SX10 totalstation. It seems the prism did not register when setting up the backsight, but scans were collected anyways. Now, in Trimble Business Center the two scans do not stitch together correctly; one scan is 180 degrees offset from the other. We have tried to use the Scan Registration tool using the pairwise registration function but it is very difficult to match the two point clouds correctly. Has anyone had a similar issue, and how have you corrected this issue?

 

Also, what is the precision lost when collecting a scan without the use of the prism for reference? I would assume the lack of a backsight reference would decrease the accuracy of point collection exponentially as distance from the total station increases. 

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