Fast Phase-Only Positioning with Triple-Frequency GPS
AbstractIn this contribution, we study the phase-only ambiguity resolution and positioning performance of GPS for short baselines. It is well known that instantaneous (single-epoch) ambiguity resolution is possible when both phase and code (pseudorange) data are used. This requires, however, a benign multipath environment due to the severe effects multipath has on the code measurements. With phase-only processing, one would be free from such severe effects, be it that phase-only processing requires a change in receiver-satellite geometry, as a consequence of which it cannot be done instantaneously. It is thus of interest to know how much change in the relative receiver-satellite geometry is needed to achieve successful phase-only ambiguity resolution with correspondingly high precision baseline solutions. In this contribution, we study the two-epoch phase-only performance of single-, dual-, and triple-frequency GPS for varying time spans from 60 s down to 1 s. We demonstrate, empirically as well as formally, that fast phase-only very-precise positioning is indeed possible, and we explain the circumstances that make this possible. The formal analyses are also performed for a large area including Australia, a part of Asia, the Indian Ocean, and the Pacific Ocean. We remark that in this contribution "phase-only" refers to phase-only measurements in the observation model, while the code data are thus only used to compute the approximate values needed for linearizing the observation equations. View Full-Text
Share & Cite This Article
Wang, K.; Chen, P.; Teunissen, P.J.G. Fast Phase-Only Positioning with Triple-Frequency GPS. Sensors 2018, 18, 3922.
Wang K, Chen P, Teunissen PJG. Fast Phase-Only Positioning with Triple-Frequency GPS. Sensors. 2018; 18(11):3922.Chicago/Turabian Style
Wang, Kan; Chen, Pei; Teunissen, Peter J.G. 2018. "Fast Phase-Only Positioning with Triple-Frequency GPS." Sensors 18, no. 11: 3922.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.