Accuracy of GPS-derived relative positions as a function of interstation distance and observing-session duration

Eckl, Mark; Snay, Richard A.; Soler, Tomás; Cline, Michael W.; Mader, Gerald L.

doi:10.1007/s001900100204

Cited by 158 publications

(90 citation statements)

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“…That control point, moreover, may already be associated with a GPS receiver that is being continuously operated by an institution for any of several diverse applications [6]. Classical differential GPS consists of at least one reference station with known coordinates with high level accuracy, and rover receivers which are at distances that will allow them to undertake observations at this station.…”

Section: Real Time Gnss Networkmentioning

confidence: 99%

A Comparison of the Accuracy of VRS and Static GPS Measurement Results for Production of Topographic Map and Spatial Data: A Case Study on CORS-TR

Tuşat

2018

Teh. vjesn.

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Abstract:The on-going developments in Global Navigation Satellite Systems (GNSS) technology affect techniques in geographic information and associated documents. The national Continuously Operating Reference Station (CORS) networks, which operate on the Real Time Kinematic (RTK) principle, are multi-purpose geodetic networks and offer services to a large portion of society including all the public institutions and other organizations, military and civilian users and to scientific researchers. It is possible to utilize these networks both in real time positioning applications using the Network Real Time Kinematic (NRTK) method and in static applications using the Receiver Independent EXchange (RINEX) format data from reference stations. In this study, Virtual Reference Station (VRS) and static GNSS measurements were undertaken based on a Continuously Operating Reference Station-Turkey (CORS-TR) network in a test network established in Turkey. As a result of the measurements, repeatability attained using the VRS method was examined. Moreover, the coordinates obtained from VRS measurements based on CORS-TR network were compared with the coordinates calculated as a result of static observations. From the accuracies and repeatability, an investigation was implemented to determine the extent to which NRTK applications in real-time GNSS networks can be used to produce spatial data and create topographic maps.

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Section: Real Time Gnss Networkmentioning

confidence: 99%

A Comparison of the Accuracy of VRS and Static GPS Measurement Results for Production of Topographic Map and Spatial Data: A Case Study on CORS-TR

Tuşat

2018

Teh. vjesn.

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“…The accuracy of GPS static positioning has also been reported thoroughly; however, investigations on the accuracies of static GPS velocities from repeated measurements have not been carried out yet (Eckl et al, 2001;Soler et al, 2006;Sanli and Engin, 2009;Firuzabadì and King, 2012). While bringing rapid static GPS solutions into conformity with static GPS solutions, Hastaoglu and Sanli (2011) noticed that the accuracy of GPS velocities from the repeated measurements is highly correlated with the observing session duration.…”

Section: Akarsu Et Al: Accuracy Of Velocities From Repeated Gps Mmentioning

confidence: 99%

“…The accuracy of static GPS measurements has been documented well. Researchers have studied the effect of observing session duration, baseline length and the network of reference stations on the accuracy of the static GPS (Eckl et al, 2001;Soler et al, 2006;Sanli and Engin, 2009;Firuzabadì and King, 2012).…”

Section: Introductionmentioning

confidence: 99%

Accuracy of velocities from repeated GPS measurements

Akarsu

Şanli

Arslan

2015

Nat. Hazards Earth Syst. Sci.

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Abstract. Today repeated GPS measurements are still in use, because we cannot always employ GPS permanent stations due to a variety of limitations. One area of study that uses velocities/deformation rates from repeated GPS measurements is the monitoring of crustal motion. This paper discusses the quality of the velocities derived using repeated GPS measurements for the aim of monitoring crustal motion. From a global network of International GNSS Service (IGS) stations, we processed GPS measurements repeated monthly and annually spanning nearly 15 years and estimated GPS velocities for GPS baseline components latitude, longitude and ellipsoidal height. We used web-based GIPSY for the processing. Assuming true deformation rates can only be determined from the solutions of 24 h observation sessions, we evaluated the accuracy of the deformation rates from 8 and 12 h sessions. We used statistical hypothesis testing to assess the velocities derived from short observation sessions. In addition, as an alternative control method we checked the accuracy of GPS solutions from short observation sessions against those of 24 h sessions referring to statistical criteria that measure the accuracy of regression models. Results indicate that the velocities of the vertical component are completely affected when repeated GPS measurements are used. The results also reveal that only about 30 % of the 8 h solutions and about 40 % of 12 h solutions for the horizontal coordinates are acceptable for velocity estimation. The situation is much worse for the vertical component in which none of the solutions from campaign measurements are acceptable for obtaining reliable deformation rates.

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“…To remove any possible seasonal effects, data were taken from three different times of the year. We chose to use 12-hour duration occupations to ensure that there was enough data to obtain reliable results for the long baselines [2]. Therefore, each station contributed data from three, 12-hour occupations, therefore, each station's final coordinates were computed from three independent vectors.…”

Section: Experimental Validationmentioning

confidence: 99%