Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2021. №11
ContentsFull text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2021.11.2
UDC: 538.566
ZENITH TROPOSPHERIC DELAY ACCORDING TO GPS OBSERVATIONS AND WATER VAPOR MEASUREMENTS BY A RADIOMETER AT BADG POINT (BADARY, REPUBLIC OF BURYATIYA)
M. G. Dembelov.
Institute of physical materials science SB RAS, 670047, Sakhyanovoy str. 6, Ulan-Ude, Russia
The paper was received November 31, 2021
Abstract. A comparison was carried out of the values of the total zenith tropospheric delay (ZTD) revealed from the observations of the GPS satellite navigation system and measurements by a microwave radiometer of water vapor (MRWV) at the BADG permanent measurement point located on the territory of the “Badary” Observatory of the Institute of Applied Astronomy of the Russian Academy of Sciences. GPS antenna, MRWV device and meteorological station are located in close proximity to each other. This significantly affected the accuracy of the processed data. The differences in the values of the total zenith tropospheric delay obtained from GPS observations and measurements with a microwave radiometer of water vapor are analyzed in terms of mean and standard deviations and the coefficient of cross-correlation. Comparison of the results for 2020 year showed very good agreement. In summer, the BIAS of the difference between the ZTD data from GPS and MRWV observations is about 0.63% of the average summer ZTD value, the cross-correlation coefficient between the data is K = 0.85. In winter, the BIAS of the difference was about 0.21% of the average winter value of ZTD, the cross-correlation coefficient between the data is about K = 0.93. A high degree of reliability of data on ZTD and tropospheric moisture content obtained by continuous GPS measurements is shown.
Key words: GPS measurements, tropospheric delay, microwave water vapor radiometer, tropospheric moisture content
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For citation:
Dembelov M.G. Zenith tropospheric delay according to GPS observations and water vapor measurements by a radiometer at Badg point (Badary, republic of Buryatiya). Zhurnal Radioelektroniki [Journal of Radio Electronics] [online]. 2021. №11. https://doi.org/10.30898/1684-1719.2021.11.2 (In Russian)