Continuous geodetic time-transfer analysis methods

Dach, Rolf; Schildknecht, Thomas; Hugentobler, Urs; Bernier, Laurent-Guy; Dudle, G.

doi:10.1109/tuffc.2006.1665073

Cited by 45 publications

(32 citation statements)

References 9 publications

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“…Such instrumental variations have previously been reported, and can be temporary or indefinite in duration [5,8].…”

Section: Long Baseline Comparisonsmentioning

confidence: 55%

“…This requires of course a reliable detection of the jumps during the preprocessing of the data. This was implemented into the Bernese GPS Software in the context of the ambiguity stacking algorithm for events with a magnitude greater than 15 ns [5].…”

Section: Short Baseline Comparisonsmentioning

confidence: 99%

“…The GIPSY GPS software (developed by JPL) can mitigate day-boundary discontinuities by applying a continuous Kalman filter across consecutive days [4]. Recently, extensions of the Bernese GPS Software package (developed by AIUB) have been developed that remove day boundary discontinuities through the method of ambiguity stacking [5], which passes ambiguity information across day boundaries by reconnecting the phase ambiguity parameters of consecutive days.…”

Section: Introductionmentioning

confidence: 99%

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GPS Carrier Phase Analysis Noise on the USNO-PTB Baselines

Matsakis

Lee

Dach

et al. 2006

2006 IEEE International Frequency Control Symposium and Exposition

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Carrier Phase GPS observations between a geodetic receiver at the Physikalisch-Technische Bundesanstalt (PTB) and two geodetic receivers at the USNO are processed using applications and extensions of the GIPSY and Bernese GPS Software packages. Their results are compared with Two Way Satellite Time and Frequency Transfer (TWSTFT) data. It is found that algorithms that eliminate day-boundary effects require careful handling in the presence of receiver instrumental delays. Depending upon the approach chosen, time differences of several ns and frequency differences of up to 100 ps/day can develop between solution types.

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“…Such instrumental variations have previously been reported, and can be temporary or indefinite in duration [5,8].…”

Section: Long Baseline Comparisonsmentioning

confidence: 55%

Section: Short Baseline Comparisonsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

GPS Carrier Phase Analysis Noise on the USNO-PTB Baselines

Matsakis

Lee

Dach

et al. 2006

2006 IEEE International Frequency Control Symposium and Exposition

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“…In general, P3 data show less bias and RMS scatter than the single frequency (SF) receivers; this is likely due to better multipath rejection. However, the geodetic receivers used in the P3 experiment can show sudden calibration jumps at the ns level [13].…”

Section: Use Of Redundant Gps Linksmentioning

confidence: 99%

On Optimizing the Configuration of Time-Transfer Links Used to Generate TAI

Matsakis¹,

Arias²,

Bauch³

et al. 2007

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Recent work on the uncertainties of [UTC-UTC(k)] has made it possible to quantify the effects of different configurations of the time-transfer links used to generate International Atomic Time (TAI). The optimal topology depends upon the magnitude and character of the time-transfer noise of the relevant systems, the correlations between the time-transfer links, the required degree of robustness, the operational practices and equipment at pivot and crossover sites, and the operational complexity of generating TAI on a routine basis. The authors are members of a study group of the Consultative Committee for Time and Frequency (CCTF) Working Group on TAI that is studying these issues, and this paper will present considerations relevant to the problem.

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“…from multi-path or temperature dependences) may has a larger effect on clock jumps between arcs. Various methods for mitigating or compensating daily jumps such as phase-only method, sliding batch solution (SBS), clock handover and so on are already presented in (Orgiazzi et al 2005, Dach et al 2006, Defraigne et al 2008. However, fully compensation method is not yet presented.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Daily Jump Compensation Methods for GPS Carrier Phase Data

Lee¹,

Yang²,

Lee³

et al. 2015

Journal of Positioning, Navigation, and Timing

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In this paper, we described the timing-offset comparison results between various daily jump compensation methods for GPS carrier phase (CP) measurement data. For the performance comparison, we used about 70 days GPS measurement data obtained from two GPS geodetic receivers which share the reference 1 PPS and RF signals and closely located in each other within a few meters. From the experiment results, the followings were observed. First, daily jumps existed in CP measurements depend on not only the environment but also the receiver which will make a full compensation be very hard or impossible. Second, clock bias can be occurred in the case of using a simple compensation with accumulation of daily jumps but it could be used in a short-period frequency comparison campaign (less than about 7 days) despite of its drawback.

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Continuous geodetic time-transfer analysis methods

Cited by 45 publications

References 9 publications

GPS Carrier Phase Analysis Noise on the USNO-PTB Baselines

GPS Carrier Phase Analysis Noise on the USNO-PTB Baselines

On Optimizing the Configuration of Time-Transfer Links Used to Generate TAI

Evaluation of Daily Jump Compensation Methods for GPS Carrier Phase Data

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