e-survey E3L User Manual

SHANGHAI ESURVEY GNSS CO., LTD.
102
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:

e-survey E3L Specifications

General

Brand	e-survey
Model	E3L
Category	Measuring Instruments
Language	English