Properties of multi-GNSS uncalibrated phase delays with considering satellite systems, receiver types, and network scales

Ping Zeng, Zhetao Zhang, Yuanlan Wen, Xiufeng He, Lina He, Muzi Li, Wu Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The Wide-Lane (WL) and Narrow-Lane (NL) Uncalibrated Phase Delays (UPDs) are the prerequisites in the traditional Precise Point Positioning (PPP) Ambiguity Resolution (AR). As the generation mechanism of various biases becomes more complex, we systematically studied the impact factors of four satellite systems WL and NL UPDs from the perspective of parameter estimation. Approximately 100 stations in a global network are used to generate the UPDs. The results of different satellite systems show that the estimation method, update frequency, and solution mode need to be treated differently. Two regional networks with different receiver types, JAVAD, and Trimble, are also adopted. The results indicate that the receiver-dependent bias has an influence on UPD estimation. Also, the hardware delays can inhibit the satellite-side UPDs if these receiver-specific errors are not fully deployed or even misused. Furthermore, the temporal stability and residual distribution of NL UPDs are significantly enhanced by utilizing a regional network, with the improvements by over 68% and 40%, respectively. It demonstrates that different network scales exhibit the different implication of unmodeled errors, and the unmodeled errors cannot be ignored and must be handled in UPD estimation.

Original languageEnglish
Article number19
JournalSatellite Navigation
Volume4
Issue number1
DOIs
Publication statusPublished - Dec 2023

Keywords

  • Network scale
  • NL UPD
  • Receiver type
  • Satellite system
  • WL UPD

ASJC Scopus subject areas

  • Signal Processing
  • Aerospace Engineering
  • Electrical and Electronic Engineering

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