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Open AccessArticle

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
Sensors 2017, 17(5), 1162; https://doi.org/10.3390/s17051162
Received: 27 March 2017 / Revised: 12 May 2017 / Accepted: 17 May 2017 / Published: 19 May 2017
(This article belongs to the Section Remote Sensors)
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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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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