2011
DOI: 10.1007/s10291-011-0206-z
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A computationally efficient approach for estimating high-rate satellite clock corrections in realtime

Abstract: Realtime satellite clock corrections are usually estimated using undifferenced phase and range observations from a global network. Because a large number of ambiguity parameters must be estimated, the computation is timeconsuming. Consequently, only a sparse global network of limited number of stations is processed by most IGS Realtime Analysis Centers with an update rate of 5 s. In addition, it is very desirable to build the capability to simultaneously estimate clock corrections for multi-GNSS constellations… Show more

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Cited by 147 publications
(64 citation statements)
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References 6 publications
(9 reference statements)
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“…In addition, the RMS values of clock differences are also computed. The RMS values indicate the consistency of clock biases which directly propagate into the code range modeling [24]. The final presented satellite-specific RMSs of orbit differences as well as the STDs and RMSs of clock differences are the averaged results for seven days, as shown in Figure 1.…”
Section: Evaluation Of Real-time Precise Satellite Orbits and Clocks mentioning
confidence: 82%
See 2 more Smart Citations
“…In addition, the RMS values of clock differences are also computed. The RMS values indicate the consistency of clock biases which directly propagate into the code range modeling [24]. The final presented satellite-specific RMSs of orbit differences as well as the STDs and RMSs of clock differences are the averaged results for seven days, as shown in Figure 1.…”
Section: Evaluation Of Real-time Precise Satellite Orbits and Clocks mentioning
confidence: 82%
“…However, this is expected to be improved with new BDS satellites launched into orbit and a more densified tracking network in the near future [19,38]. In addition, although the RMS values of the along-track and cross-track components are larger than those of the radial component, the positioning users on the Earth's surface are less sensitive to errors in along-track and cross-track directions than to those in the radial direction; the orbit errors in the along-track and cross-track directions may therefore have a less significant impact on the accuracy of user positioning [24].…”
Section: Discussionmentioning
confidence: 99%
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“…Real-time satellite clock corrections are usually estimated by the undifferenced, the epoch-differenced, or the mixed-differenced mode. It is proved that the mixed-differenced method can reduce the computation time significantly compared with undifferenced method and achieve better accuracy than the epoch-differenced method in [27]. With mixed-differenced method, it is shown to be efficient enough to produce 1-Hz BDS/GPS clocks for real-time applications in a simulated real-time mode [28].…”
Section: Orbit and Clock Productsmentioning
confidence: 99%
“…In RT satellite clock offset estimation, the speed of data processing can be accelerated by epoch differencing (Ge et al, 2012). In this research, we adopt the method and extend it to process GPS/BeiDou observations together.…”
Section: Rt Clock Offset Estimation Methodsmentioning
confidence: 99%