Leica Geosystems iCON iCT30 User Manual page 67

Atmospheric
corrections °C
Atmospheric
corrections °F
Technical Data
available. The following formula is valid for cylindrical projections such as that
of Gauss-Krüger:
2
X
ΔD
6
=
· 10
3
2
2R
TS_107
In countries where the scale factor is not unity, this formula cannot be directly
applied.
Atmospheric corrections in ppm with temperature [°C], air pressure [mb] and
height [m] at 60% relative humidity.
550 mb 600 650 700
50°C
40°C
30°C
20°C
10°C
0°C
-10°C
-20°C
550 mb 600 650 700
5000 m 4500 4000 3500 3000
TS_108
Atmospheric corrections in ppm with temperature [°F], air pressure [inch Hg]
and height [ft] at 60% relative humidity.
16 17 18 19 20 21
130°F
120°F
110°F
100°F
90°F
80°F
70°F
60°F
50°F
40°F
30°F
20°F
10°F
0°F
-10°F
-20°F
16 17 18 19 20 21
[ ft ]
TS_109
Projection distortion [ppm]
DD
3
X Easting, distance from projection
zero line with the scale factor 1
[km]
R
6.378 * 10
750 800 850 900 950
750 800 850 900 950
2500 2000 1500 1000 500
22 23 24 25 26 27 28 29 30
22 23 24 25 26 27 28 29 30
6
m
1000 1050 mb
50°C
40°C
30°C
20°C
10°C
0°C
-10°C
-20°C
1000 1050 mb
0 m
31 32 inch Hg
130°F
120°F
110°F
100°F
90°F
80°F
70°F
60°F
50°F
40°F
30°F
20°F
10°F
0°F
-10°F
-20°F
31 32 inch Hg
67