The International GNSS Service in a changing landscape of Global Navigation Satellite Systems

Dow, J. M.; Neilan, R. E.; Rizos, Chris

doi:10.1007/s00190-009-0315-4

Cited by 94 publications

(78 citation statements)

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“…Each observation was processed using the Bernese GPS Software (Dach et al, 2007). Precise orbit and earth rotation parameters were used from IGS final products (Dow et al, 2009). During the processing, the antenna phase centre was reduced using absolute calibration, and double differences were modelled in L3, using elevation masks of 10° and a sampling rate of 30 s. To form the single differences a phase strategy of maximum observations was used.…”

Section: Gps Datamentioning

confidence: 99%

A high-resolution, time-variable afterslip model for the 2010 Maule Mw = 8.8, Chile megathrust earthquake

Bedford

Moreno

Báez

et al. 2013

Earth and Planetary Science Letters

111

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Editor: P. ShearerKeywords: subduction post-seismic megathrust afterslip GPS MauleThe excellent spatial coverage of continuous GPS stations in the region affected by the Maule 8.8 2010 earthquake, combined with the proximity of the coast to the seismogenic zone, allows us to model megathrust afterslip on the plate interface with unprecedented detail. We invert post-seismic observations from continuous GPS sites to derive a time-variable model of the first 420 d of afterslip. We also invert co-seismic GPS displacements to create a new co-seismic slip model. The afterslip pattern appears to be transient and non-stationary, with the cumulative afterslip pattern being formed from afterslip pulses. Changes in static stress on the plate interface from the co-and post-seismic slip cannot solely explain the aftershock patterns, suggesting that another process -perhaps fluid related -is controlling the lower magnitude aftershocks. We use aftershock data to quantify the seismic coupling distribution during the post-seismic phase.Comparison of the post-seismic behaviour to interseismic locking suggests that highly locked regions do not necessarily behave as rate-weakening in the post-seismic period. By comparing the inter-seismic locking, co-seismic slip, afterslip, and aftershocks we attempt to classify the heterogeneous frictional behaviour of the plate interface.

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Section: Gps Datamentioning

confidence: 99%

A high-resolution, time-variable afterslip model for the 2010 Maule Mw = 8.8, Chile megathrust earthquake

Bedford

Moreno

Báez

et al. 2013

Earth and Planetary Science Letters

111

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“…In order to compare and to provide an independent check of our findings, we also processed UNAVCO measurements, contributors to the International GNSS Service (Dow et al 2009), of the L1 C/A, L2C, and L5Q signals transmitted on June 1, 2009 by GPS SVN49. These GPSonly data were collected with a 76-channel Trimble NetR8 receiver able to track modernized GPS L2C and L5 signals (Trimble Navigation Limited 2008a), and a Trimble GNSS choke ring antenna that supports all GPS frequency bands (Trimble Navigation Limited 2008b).…”

Section: Measurement Campaignmentioning

confidence: 99%

Short and zero baseline analysis of GPS L1 C/A, L5Q, GIOVE E1B, and E5aQ signals

et al. 2011

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Stochastic properties of GNSS range measurements can accurately be estimated using a geometry-free short and zero baseline analysis method. This method is now applied to dual-frequency measurements from a new field campaign. Results are presented for the new GPS L5Q and GIOVE E5aQ wideband signals, in addition to the GPS L1 C/A and GIOVE E1B signals. As expected, the results clearly show the high precision of the new signals, but they also show, rather unexpectedly, significant, slowly changing variations in the pseudorange code measurements that are probably a result of strong multipath interference on the data. Carrier phase measurement noise is assessed on both frequencies, and finally successful mixed GPS-GIOVE double difference ambiguity resolution is demonstrated.

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“…However, their distance determination study is only based on four campaigns of two 24-h sessions of GPS data. We want to considerably extend the period of observation up to a whole year using some of the most stable stations of the IGS global network (Dow et al 2009), EUREF Permanent GNSS Network (EPN) (Bruyninx et al 2009) and CORS network (Snay and Soler 2008).…”

Section: Initial Assumptionsmentioning

confidence: 99%

Submillimetric GPS distance measurement over short baselines: case study in inner consistency

Baselga

García-Asenjo

Garrigues

2013

Meas. Sci. Technol.

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Abstract.Distance determination in open air with submillimetric accuracy is a challenging task usually carried out with the use of submillimetric distancemeters and costly observation campaigns. The present paper represents a first step in the research of the potential use of GPS for submillimetric distance determination for distances up to a few hundred metres consisting in the evaluation of GPS distance determination reproducibility. As it will be concluded, reliable submillimetric precision is attainable after some hours of observation if the same equipment in both baseline ends is used, even considering that there still remain some long-term systematic effects of a few tenths of a millimetre. The need for precise absolute antenna calibration values is also shown to be critical for submillimetric distance reproducibility.

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The International GNSS Service in a changing landscape of Global Navigation Satellite Systems

Cited by 94 publications

References 0 publications

A high-resolution, time-variable afterslip model for the 2010 Maule Mw = 8.8, Chile megathrust earthquake

A high-resolution, time-variable afterslip model for the 2010 Maule Mw = 8.8, Chile megathrust earthquake

Short and zero baseline analysis of GPS L1 C/A, L5Q, GIOVE E1B, and E5aQ signals

Submillimetric GPS distance measurement over short baselines: case study in inner consistency

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