Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35696
Title: Assessment of precipitable water vapor derived from ground-based BeiDou observations with precise point positioning approach
Authors: Li, M
Li, WW
Shi, C
Zhao, QL
Su, X
Qu, LZ
Liu, ZZ 
Keywords: BeiDou Navigation Satellite System (BDS)
Global Positioning System (GPS)
Precipitable water vapor (PWV)
Precise Point Positioning (PPP)
Assessment
Issue Date: 2015
Publisher: Pergamon Press
Source: Advances in space research, 2015, v. 55, no. 1, p. 150-162 How to cite?
Journal: Advances in space research 
Abstract: Precipitable water vapor (PWV) estimation from Global Positioning System (GPS) has been extensively studied and used for meteorological applications. However PWV estimation using the emerging BeiDou Navigation Satellite System (BDS) is very limited. In this paper the PWV estimation strategy and the evaluation of the results inferred from ground-based BDS observations using Precise Point Positioning (PPP) method are presented. BDS and GPS data from 10 stations distributed in the Asia Pacific and West Indian Ocean regions during the year 2013 are processed using the PANDA (Position and Navigation Data Analyst) software package. The BDS-PWV and GPS-PWV are derived from the BDS-only and GPS-only observations, respectively. The PPP positioning differences between BDS-only and GPS-only show a standard deviation (STD) <1 cm in the east and north components and 1-3 cm in vertical component. The BDS-PWV and GPS-PWV at the HKTU station (Hong Kong, China) is compared with PWV derived from a radiosonde station (about 1 km distance) over a 6-month period. The GPS-PWV shows a good agreement with radiosonde-PWV with a bias of 0.002 mm and a STD of 2.49 mm while BDS-PWV has with a bias of -2.04 mm and STD 2.68 mm with respect to radiosonde-PWV. This indicates that the PWV estimated from the BDS can achieve similar precision as PWV from GPS. The BDS-PWV is compared to GPS-PWV at 10 stations. The mean bias and STD of their differences at 10 stations are 0.78 mm and 1.77 mm, respectively. The mean root mean square (RMS) value is 2.00 mm by considering the GPS-PWV as reference truth. This again confirms that the BDS-PWV has a good agreement with the GPS-PWV. It clearly indicates that the BDS is ready for the high precision meteorological applications in the Asia Pacific and West Indian Ocean regions and that BDS alone can be used for PWV estimation with an accuracy comparable to GPS.
URI: http://hdl.handle.net/10397/35696
ISSN: 0273-1177
DOI: 10.1016/j.asr.2014.10.010
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

3
Citations as of Mar 20, 2017

WEB OF SCIENCETM
Citations

5
Last Week
0
Last month
Citations as of Mar 25, 2017

Page view(s)

14
Last Week
1
Last month
Checked on Mar 26, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.