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Sensors 2017, 17(5), 1162; doi:10.3390/s17051162

Property Analysis of the Real-Time Uncalibrated Phase Delay Product Generated by Regional Reference Stations and Its Influence on Precise Point Positioning Ambiguity Resolution

1
School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China
2
Germany Research Center For Geosciences (GFZ), Telgrafenberg, 14473 Potsdam, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Ayman F. Habib
Received: 27 March 2017 / Revised: 12 May 2017 / Accepted: 17 May 2017 / Published: 19 May 2017
(This article belongs to the Section Remote Sensors)
View Full-Text   |   Download PDF [2133 KB, uploaded 19 May 2017]   |  

Abstract

The real-time estimation of the wide-lane and narrow-lane Uncalibrated Phase Delay (UPD) of satellites is realized by real-time data received from regional reference station networks; The properties of the real-time UPD product and its influence on real-time precise point positioning ambiguity resolution (RTPPP-AR) are experimentally analyzed according to real-time data obtained from the regional Continuously Operating Reference Stations (CORS) network located in Tianjin, Shanghai, Hong Kong, etc. The results show that the real-time wide-lane and narrow-lane UPD products differ significantly from each other in time-domain characteristics; the wide-lane UPDs have daily stability, with a change rate of less than 0.1 cycle/day, while the narrow-lane UPDs have short-term stability, with significant change in one day. The UPD products generated by different regional networks have obvious spatial characteristics, thus significantly influencing RTPPP-AR: the adoption of real-time UPD products employing the sparse stations in the regional network for estimation is favorable for improving the regional RTPPP-AR up to 99%; the real-time UPD products of different regional networks slightly influence PPP-AR positioning accuracy. After ambiguities are successfully fixed, the real-time dynamic RTPPP-AR positioning accuracy is better than 3 cm in the plane and 8 cm in the upward direction. View Full-Text
Keywords: real-time precise point positioning (RTPPP); real-time precise point positioning ambiguity resolution (RTPPP-AR); uncalibrated phase delay (UPD); regional station real-time precise point positioning (RTPPP); real-time precise point positioning ambiguity resolution (RTPPP-AR); uncalibrated phase delay (UPD); regional station
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zhang, Y.; Wang, Q.; Jiang, X. Property Analysis of the Real-Time Uncalibrated Phase Delay Product Generated by Regional Reference Stations and Its Influence on Precise Point Positioning Ambiguity Resolution. Sensors 2017, 17, 1162.

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