Error sources of a total station measurment
I’m creating a list of total station measurement errors, take a look and let me know if I missed one…
1. Horizontal collimation – internal
2. Vertical collimation – internal
3. Tilting & trunnion axis error – internal
4. Compensator index error – internal
5. Autolock collimation – internal
6. EDM error – internal
7. Standing axis error – external
8. PPM compensation – external
9. Prism constant compensation – external
10. Instrument centering error – external
11. Target centering error – external
12. Curvature and correction compensation – external
Obviously these branch off into subcategories of error (ex target centering error includes pole plumbness error, reflector centering error, physically centering over the point, vertical target centering error, ect) but can you think of any other categories I’m missing?
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