Справочник Пользователя для Leica TPS1200
Technical Data
205
8.10
Scale Correction
Use
By entering a scale correction, reductions proportional to distance can be taken into
account.
•
account.
•
Atmospheric correction
•
Reduction to mean sea level
•
Projection distortion
Atmospheric
correction ΔD
correction ΔD
1
The slope distance displayed is correct if the scale correction in ppm, mm/km, which
has been entered corresponds to the atmospheric conditions prevailing at the time
of the measurement.
has been entered corresponds to the atmospheric conditions prevailing at the time
of the measurement.
The atmospheric correction includes:
•
•
Adjustments for air pressure
•
Air temperature
•
Relative humidity
For highest precision distance measurements, the atmospheric correction should be
determined with an accuracy of 1 ppm. The following parameters must be redeter-
mined:
•
determined with an accuracy of 1 ppm. The following parameters must be redeter-
mined:
•
Air temperature to 1°C