Article Index

2. Types

While we didn't identify all the errors affecting electro-optical distance measurement accuracy, we've hit on most of the major ones in each source. Let's categorize those based by their behavior or Type, Table B-1: 

Table B-1

Source Error Type
Personal Centering Random
  Height measurement Systematic
  Atmospheric conditions determination Systematic
Instrumental Bubbles: TSI and rod Systematic
  Optical plummet Systematic
  Manufacturer's Stated Accuracy Random
  Combined constant Systematic
  Reflector height Systematic
Natural Atmospheric conditions Systematic
  Refraction and curvature Systematic
  Atmospheric anomalies Random