User's Manual
Table Of Contents
- 1. Precautions for safety
- 2. Nomenclature
- 3. Preparation before measurement
- 4. Basic functions
- 5. Instrument settings
- 6. Measurement
- 7. Data management
- 8. Check and adjustment
- 9. Technical features
- 10. Kit components
- Appendix I: Atmospheric correction formula and chart
- Appendix II: Correction for refraction and earth curvature
- Appendix III: Technical drawing
- Limited warranty standard
- Environmental recycling
Stonex R80 Robotic Total Station - User Manual 68
Appendix II: Correction for refraction and earth curvature
The factory setting for the refraction coefficient K is 0.142.
Considering the correction of refraction and earth curvature for distance measurement, the formula for slope
distance, horizontal distance and vertical distance applied in the instrument are as followings:
The conversion formula for horizontal and vertical distance is as follows when correction for refraction and earth
curvature is not applied:
𝐻𝐷 = 𝑆𝐷 cos 𝜉
𝑉𝐷 = 𝑆𝐷 ∣ sin 𝜉 ∣
NOTE:
• The factory setting for the refraction coefficient K is 0.142.
• Refer to the section 5.2.1. Measure condition settings.