SHANGHAI ESURVEY GNSS CO., LTD.
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8 Appendix
8.1 Atmospheric Correction Formula and Chart (Just for reference)
The related information is as follows:
Factory setting: temperature: 20℃, pressure:1013 hpa, 0 ppm
Correction: Kpt = 274.417-0.2904 * p / (1 + 0.0036 * t)
Where:
Kpt: atmospheric correction (ppm)
p: pressure value (hPa)
t: temperature value (℃)
Example:
If t=20℃, p=1013hpa, L0=1000m, then:
Kpt = 0ppm
L = L0 (1 + Kpt) = 1000 * (1 + 0 *10 - 6) = 1000.000m
The atmospheric value is obtained easily with the following atmospheric correction chart:
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