Abstract
The Crustal Movement Observation Network of China (CMONOC) has begun receiving BeiDou Navigation Satellite System (BDS) observations since 2015, and accumulated more than 2.5 years of data. BDS observations has been widely applied in many fields, and long-term continuous data provide a new strategy for the study of crustal deformation in China. This paper focuses on the evaluation of BDS positioning performance and its potential application on crustal deformation in CMONOC. According to the comparative analysis on multipath delay (MPD) and signal to noise ratio (SNR) between BDS and GPS data, the data quality of BDS is at the same level with GPS measurements in COMONC. The spatial distribution of BDS positioning accuracy evaluated as the root mean square (RMS) of daily residual position time series on horizontal component is latitude-dependent, declining with the increasing of station latitude, while the vertical one is randomly distributed in China. The mean RMS of BDS position residual time series is 7 mm and 22 mm on horizontal and vertical components, respectively, and annual periodicity in position time series can be identified by BDS data. In view of the accuracy of BDS positioning, there are no systematic differences between GPS and BDS results. Based on time series analysis with data volume being 2.5 years, the noise characteristics of BDS daily position time series is time-correlated and corresponding noise is white plus flicker noise model, and the derived mean RMS of the BDS velocities is 1.2, 1.5, and 4.1 mm/year on north, east, and up components, respectively. The imperfect performance of BDS positioning relative to GPS is likely attributed to the relatively low accuracy of BDS ephemeris, and the sparse amount of MEO satellites distribution in the BDS constellation. It is expectable to study crustal deformation in CMONOC by BDS with the gradual maturity of its constellation and the accumulation of observations.
Highlights
As an important participator of the Global Navigation Satellite System (GNSS), BeiDou NavigationSatellite System (BDS) is designed to provide positioning, navigating and time services in the world.BeiDou Navigation Satellite System (BDS) is formed by three types of satellites including five Geostationary Earth Orbit (GEO) satellites, three Inclined Geosynchronous Satellite Orbit (IGSO) satellites, and 27 Medium Earth Orbit (MEO)satellites
This paper aims to evaluate the positioning performance of BDS with observations collected in Crustal Movement Observation Network of China (CMONOC)
The signal to noise ratio (SNR) and multipath delay (MPD) are highly correlated with the elevation angles of satellites, The SNR and MPD are highly correlated with the elevation angles of satellites, and the magnitude of and the magnitude of MPD decreases with the increase of satellite elevation angle
Summary
Satellite System (BDS) is designed to provide positioning, navigating and time services in the world. By the end of 2012, there were five GEO satellites, five IGSO satellites and four MEO satellites in the integrated constellation of BDS, making it capable to provide services in Asia-Pacific area. Since the end of 2012, an additional one GEO satellite and 14 MEO satellites have been launched in order to fill in the incomplete BDS constellation. 35 satellites, is to be fulfilled in 2020 and to make global services come true (http://www.beidou.gov.cn). The positioning, navigating and time services of BDS have already reached or even exceeded its designed targets [9,10,11,12,13,14]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
