23
Input the Refraction factor, temperature,
pressure, and Atmospheric PPM values.
Press SET. to save the change.
【
Atmospheric Data
】
Refrcorr
:
0.14
Temp
:
20.0 °C
Pressure
:
1013.0 hPa
Atmos PPM
:
0 PPM
BACK
PPM=0.
SET.
Notice:
a. The inputting scope of refraction factor is 0.00(SHUT) ~0.20.
b. The inputting scope: Temperature:-40~+60°C (step length 0.1°C) or -40~140°F (step length
0.1°F).
c.
Air pressure:420~799.5mmHg (step length 0.1mmHg) or 560~1066 hPa (step length
0.1hpa) or 16.5~31.5 inchHg (step length 0.1 inchHg).
d. The atmospheric correction value will be calculated according to the temperature and
pressure value entered.
3.2.3 Grid Factor
In coordinate calculation, use horizontal distance to multiply scale factor.
Calculation Formula
1. HEIGHT FACTOR=
ELEV
R
R
R: The average radius of the earth
ELEV: The height of the mean sea level
2. SCALE FACTOR
Scale factor: the scale on the measurement station
3. GRID FACTOR
Grid factor = height factor×scale factor
Distance Calculation
1. GRID DISTANCE
HDg = HD × Grid factor
HDg: Grid distance
HD: Ground distance
2. GROUND DISTANCE
HD =
Grid
HDg
Note: 1).Inputting range of scale:0.990000 ~ 1.010000. The default value: 1.00000
2).Inputting range of average altitude: -9999.8 ~ 9999.8.
The average altitude value is rounded off to the nearest tenth and the default value is
zero.
Содержание STS-750RC Series
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