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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 사단법인 항법시스템학회 Journal of Positioning, Navigation, and Timing Journal of Positioning, Navigation, and Timing 제9권 제3호
- 발행연도
- 2020.1
- 수록면
- 229 - 236 (8page)
이용수
초록· 키워드
오류제보하기
The trend of water vapor contents in atmosphere is one of key elements for studying climate change. The tropospheric products, i.e., ZTD values achieved through GPS data processing can retrieve the amount of water vapor with higher temporal and spatial resolution than any other instruments. In this study, the tropospheric products of KASINET for a time period from 2001 to 2014 are reprocessed using PPP strategy and the products from the CODE’s 2nd reprocessing campaign. For consistency with reprocessing activities of other networks like EPN, the VMF1 mapping function and non-tidal loading effect due to atmospheric pressure are applied in the process. The reprocessing results are investigated through comparing with the CODE’s 2nd reprocessing products by including some IGS stations in the process and also calculating weekly coordinate repeatability to see the quality of the processing. After removing outliers based on the variation of averaged formal error, all processed stations have similar variations of formal error about 2 mm which is lower than that of the IGS final product. Comparison results with the CODE’s 2nd reprocessing products show that the overall mean difference is found to be -0.28±5.54 mm which is similar level of the previous studies. Finally, the ZTD trends of all KASINET stations are calculated and the averaged trend is achieved as 0.19 mm/yr. However, the trend of each month shows different amounts and directions from -1.26 mm/yr in May to 1.18 mm/yr in August. In conclusion, the reprocessed tropospheric product and applied strategy of this study has enough quality as one of reliable solution for a reference product for Korean Peninsula which is needed to use GPSbased tropospheric product for climate change research.
목차
등록된 정보가 없습니다.
참고문헌 (17)
참고문헌 신청
Michael Bevis / 1994 / GPS Meteorology: Mapping Zenith Wet Delays onto Precipitable Water / Journal of Applied Meteorology 33(3):379~386
Johannes Boehm / 2006 / Troposphere mapping functions for GPS and very long baseline interferometry from European Centre for Medium-Range Weather Forecasts operational analysis data / Journal of Geophysical Research: Solid Earth 111(B2)
Sung H. Byun / 2009 / A new type of troposphere zenith path delay product of the international GNSS service / Journal of Geodesy 83(3-4):1~7
Dach, R / 2015 / Berenese GNSS Software Version 5.2. User Manual / University of Bern
Jan Dousa / 2017 / Tropospheric products of the second GOP European GNSS reprocessing (1996–2014) / Atmospheric Measurement Techniques 10(9):3589~3607
Johannes Boehm / 2006 / Troposphere mapping functions for GPS and very long baseline interferometry from European Centre for Medium-Range Weather Forecasts operational analysis data / Journal of Geophysical Research: Solid Earth 111(B2)
Sung H. Byun / 2009 / A new type of troposphere zenith path delay product of the international GNSS service / Journal of Geodesy 83(3-4):1~7
Dach, R / 2015 / Berenese GNSS Software Version 5.2. User Manual / University of Bern
Jan Dousa / 2017 / Tropospheric products of the second GOP European GNSS reprocessing (1996–2014) / Atmospheric Measurement Techniques 10(9):3589~3607
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