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http://dx.doi.org/10.7319/kogsis.2013.21.4.095

Determination of Precipitable Water Vapor from Combined GPS/GLONASS Measurements and its Accuracy Validation  

Sohn, Dong Hyo (Department of Geoinformatic Engineering, Inha University)
Park, Kwan Dong (Department of Geoinformatic Engineering, Inha University)
Kim, Yeon Hee (Applied Meteorology Research Division, National Institute of Meteorological Research)
Publication Information
Journal of Korean Society for Geospatial Information Science / v.21, no.4, 2013 , pp. 95-100 More about this Journal
Abstract
Several observation equipments are being used for determination of the water vapor content and precipitable water vapor (PWV) because the water vapor is highly variable temporally and spatially. In this study, we used GNSS systems such as GPS and GLONASS in standalone and combined modes to compute PWV and validated their accuracy with respect to the results of other water-vapor monitoring systems. The other systems used were radiosonde and microwave radiometer, and the comparisons were convenient because all three systems were collocated at the test site. The differences of PWW were in the range of 0.6-3.4 mm in the mean sense, and their standard deviations were 1.0-3.8 mm. The relatively large difference of GNSS compared with the other two systems were believed to be caused by the fact that the GNSS antenna used in this study was the kind for which the international standard of phase center variations (PCV) calibration is not available. We expect better accuracy of PWV determination and improved availability of it through integrated data processing of GPS/GLONASS when an appropriate antenna with PCV correction model is used.
Keywords
Precipitable Water Vapor; GPS; GLONASS; Radiosonde; Microwave Radiometer;
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Times Cited By KSCI : 5  (Citation Analysis)
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1 Bevis, M., Businger, S., Herring, T. A., Rocken, C., Anthes, R. A., and Ware, R. H., 1992, GPS meteorology: Remote sensing of atmospheric water vapor using the global positioning system, Journal of Geophysical Research, Vol. 97, No. D14, pp.15787-15801.   DOI
2 Dach, R., Hugentobler, U., Fridez, P., and Meindl, M., 2007, Bernese GPS software version 5.0, Printing Office of the University of Bern, Bern.
3 Ha, J., Kim, D., Park, K. D., Won, J., 2009, Observation of atmospheric water vapors using AIRS, Journal of Astronomy and Space Sciences, Vol. 26, No. 4, pp.547-554.   과학기술학회마을   DOI   ScienceOn
4 KNMI, 2013, Royal Netherlands Meteorological Institute, http://www.knmi.nl/samenw/egvap/validation/stat_plot.cgi?GOPG,bias
5 Kwon H. T., Iwabuchi T., Lim G.-H., 2007, Comparison of precipitable water derived from ground-based GPS measurements with radiosonde observations over the Korean peninsula, Journal of the Meteorological Society of Japan, Vol. 85, No. 6, pp.733-746.   DOI   ScienceOn
6 Lee, H. S., Park, K. D., Kim, D. S., Sohn, D. H., 2012, Analysis of integrated GPS and GLONASS double difference relative positioning accuracy in the simulation environment with lots of signal blockage, Journal of Navigation and Port Research, Vol. 36, No. 6, pp.429-435.   과학기술학회마을   DOI   ScienceOn
7 Moon, Y. J., Choi, K. H., 1999, Estimation of precipitable water vapor using the GPS, Journal of Astronomy and Space Sciences, Vol. 16, No. 1, pp.61-68.   과학기술학회마을
8 NGS, 2012, NGS Antenna Calibration Procedures.
9 NOAA, 2013, Ground Based GPS Meteorology, http://www.gpsmet.noaa.gov/
10 Park, K. D., Won, J., 2006, Comparison of calibration models for GPS antenna phase center variations, Korean Journal of Geomatics, Vol. 24, No. 4, pp.319-326.   과학기술학회마을
11 Park, W. Y., Kim, J. S., Kim, Y. B., Back, K. S., Accuracy analysis of positioning supplementary control point with the RTK-GPS and RTK-GPS/GLONASS, Journal of the Korean Society for Geospatial Information System, 2003, Vol. 11, No. 1, pp.61-69.   과학기술학회마을
12 Rose, T., Czekala, H., 2009, RPG-HATPRO operating manual version 7.88, Printing Radiometer Physics Gmbh, Meckenhaim.
13 Sohn D. H., Park K. D., Won J., Cho J., Roh K. M., 2012, Comparison of the characteristics of precipitable water vapor measured by global positioning system and microwave radiometer, Journal of Astronomy and Space Sciences, Vol. 29, No. 1, pp.1-10.   과학기술학회마을   DOI   ScienceOn
14 Vedel, H., 2003, Radiosonde data specification document, TOUGH deliverables, The Danish Meteorological Institute.
15 Wang J., Zhang L., 2008, Systematic errors in global radiosonde precipitable water data from comparisons with ground-based GPS measurements, Journal of Climate, Vol. 21, pp.2218-2238.   DOI   ScienceOn