Geodetski list, Vol. 66 (89) No. 3, 2012.
Izvorni znanstveni članak
Automation of the Measurement of Atmospheric Parameters in Precise Distance Measurement
Nikola Solarić
; Geodetski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Đuro Barković
orcid.org/0000-0003-3382-253X
; Geodetski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Mladen Zrinjski
orcid.org/0000-0003-0834-6009
; Geodetski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Sažetak
This paper presents the developed automated measurement of atmospheric parameters by means of two sensors Väisälä WXT510 and the notebook for the purpose of precise distance measurements at the calibration baseline of the Faculty of Geodesy, University of Zagreb. During the precise distance measurements, it is very important to measure the atmospheric parameters as precisely as possible: temperature, pressure and relative air humidity. The error in temperature measurement of 1 °C causes the error in the measured distance of 1 mm at 1000 m. For precise distance measurements it is therefore necessary to measure the temperature with the accuracy of ±0.1 °C. For this purpose, in order to measure the atmospheric parameters as accurately as possible, the automation of recording the atmospheric parameters measured by means of the sensors Väisälä has been developed. The testing in the Laboratory for Measurements and Measuring Techniques of the Faculty of Geodesy has shown that after the connection to the voltage one should wait approximately 70 minutes for it to be stabilized. At the calibration baseline of the Faculty of Geodesy it has been found out, that the sensors Väisälä need to be set on 5 equally arranged places at the calibration baseline at the distance of 1000 m for the purpose more accurate temperature measurement. After the automatic gathering of atmospheric parameters and their automated processing, we obtain the results for average temperature, pressure and relative air humidity needed in further automated processing and adjustment of distances measured with precise electro-optical distance meter.
Ključne riječi
automated measurement of atmospheric parameters; Väisälä WXT510; WeatherTransmitter; precise distance measurements
Hrčak ID:
95828
URI
Datum izdavanja:
21.9.2012.
Posjeta: 1.340 *