Reference station network based RTK systems-concepts and progress

Rizos, Chris; Han, Shuai

doi:10.1007/bf02899820

Cited by 66 publications

(54 citation statements)

References 11 publications

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“…Techniques have been developed to overcome this distance dependence using a network of GNSS reference stations spread over a wide geographic area (Hu et al 2003;Rizos and Han 2003).…”

Section: Network Rtkmentioning

confidence: 99%

“…NRTK requires an ambiguity resolution 'engine' which will fix the integer ambiguities between the static multiple reference receivers, located at stations of known position, and so make up the network (Rizos and Han 2003). The reference station separation is usually restricted to less than 100 km to allow for quick and reliable ambiguity resolution.…”

Section: Network Rtkmentioning

confidence: 99%

“…This accuracy varies depending upon the distance between the reference and moving receiver. The limitation of RTK is due to distance-dependent biases, such as orbit bias, ionosphere bias and troposphere bias (Rizos and Han 2003). This restricts the distance to 10 kilometres or less.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance of Single Base RTK GNSS Method versus Network RTK

Aykut¹,

Gülal²,

Akpınar³

2015

Earth sci. res. j.

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is examined by use of measurements in 5 Istanbul GPS Triangulation Network (IGNA) benchmark points, with five repeatability measurements up to 50 km from the station. The CORS-TR network RTK solution is used at the same points, and the results are compared. The measured coordinates produced by the two RTK solutions are compared with the IGNA point coordinates. Satellite geometry, initialisation time and the standard deviation of repeatability are also determined. The differences between measured and known coordinates are calculated as 1-2 cm horizontally and close to 3 cm vertically using the YLDZ single base RTK method.Después de la década de los 90, el Sistema Global de Navegación por satélite/Sistema de Posicionamiento Global (GNSS/GPS, en inglés), basado en tecnología de Navegación Cinética Satelital en Tiempo Real (RTK, del inglés Real Time Kinematic) se convirtió en la técnica preferida en el mundo y que todavía se utiliza en varias aplicaciones como el monitoreo, sistemas de alerta temprana y mapeo e ingeniería de aplicativos. Para finales de 2008, los aplicativos de ingeniería utilizan la red de Estaciones de Referencia de Funcionamiento Continuo (CORS-TR, un proyecto establecido en Turquía) para determinar posiciones en tres dimensiones a lo largo del territorio turco. Por otro lado, las estaciones RTK de una sola base han funcionado en Turquía. La YLDZ es una estación de este tipo que fue establecida en la Universidad Técnica de Yildiz por el departamento de Ingeniería Geomática en 2012. En este trabajo se examina el desempeño de la estación YLDZ a través de la medición de cinco puntos de referencia del Sistema de Triangulación GPS de Estambul (IGNA, en inglés) con cinco mediciones repetitivas a más de 50 km de la estación. Similares medidas RTK se hicieron con la red CORS-TR y se compararon los resultados. Las dos mediciones producidas por las soluciones RTK se compararon con los puntos de coordenadas IGNA. También se determinó la geometría satelital, el tiempo de inicialización y la desviación estándar de la repetibilidad. Las diferencias entre las coordenadas medidas y las coordenadas conocidas se calcularon en un rango de 1-2 centímetros horizontalmente y cerca de 3 centímetros verticalmente para la estación YLDZ con el método RTK. ABSTRACT RESUMEN

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“…Techniques have been developed to overcome this distance dependence using a network of GNSS reference stations spread over a wide geographic area (Hu et al 2003;Rizos and Han 2003).…”

Section: Network Rtkmentioning

confidence: 99%

Section: Network Rtkmentioning

confidence: 99%

See 1 more Smart Citation

Performance of Single Base RTK GNSS Method versus Network RTK

Aykut¹,

Gülal²,

Akpınar³

2015

Earth sci. res. j.

View full text Add to dashboard Cite

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“…The real-time kinematic positioning method using observations as well as corrections provided by a Ground-Based Augmentation System (GBAS), known as the Network RTK technique, is presently the most commonly utilized method of precision GNSS positioning (Rizos, 2002;Lachapelle and Alves, 2002;Rizos and Han, 2003). Use of a GBAS consisting of a network of reference stations makes possible the determination of ionospheric and geometric (i.e.…”

Section: Introductionmentioning

confidence: 99%

Study on the influence of stochastic properties of correction terms on the reliability of instantaneous network RTK

Próchniewicz

2014

Artificial Satellites

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ABSTRACT. The reliability of precision GNSS positioning primarily depends on correct carrier-phase ambiguity resolution. An optimal estimation and correct validation of ambiguities necessitates a proper definition of mathematical positioning model. Of particular importance in the model definition is the taking into account of the atmospheric errors (ionospheric and tropospheric refraction) as well as orbital errors. The use of the network of reference stations in kinematic positioning, known as Network-based Real-Time Kinematic (Network RTK) solution, facilitates the modeling of such errors and their incorporation, in the form of correction terms, into the functional description of positioning model. Lowered accuracy of corrections, especially during atmospheric disturbances, results in the occurrence of unaccounted biases, the so-called residual errors. The taking into account of such errors in Network RTK positioning model is possible by incorporating the accuracy characteristics of the correction terms into the stochastic model of observations. In this paper we investigate the impact of the expansion of the stochastic model to include correction term variances on the reliability of the model solution. In particular the results of instantaneous solution that only utilizes a single epoch of GPS observations, is analyzed. Such a solution mode due to the low number of degrees of freedom is very sensitive to an inappropriate mathematical model definition. Thus the high level of the solution reliability is very difficult to achieve. Numerical tests performed for a test network located in mountain area during ionospheric disturbances allows to verify the described method for the poor measurement conditions. The results of the ambiguity resolution as well as the rover positioning accuracy shows that the proposed method of stochastic modeling can increase the reliability of instantaneous Network RTK performance.

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“…코드를 이용한 위치결정 방법의 대표적인 예 로 DGPS(Differential GPS)가 있으며 수 십 cm의 위치 결정 정확도를 가지는 반면 반송파 기반의 위치 결정 방법은 수 cm의 위치결정 정확도로 측정이 가능하 다. 그러나 이 방법의 이용에 있어 반송파 해석을 위 한 미지정수(integer ambiguity)의 문제, 처리의 복잡성 문제에 대한 극복이 필요하다 [2].…”

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Site Selection Method of Receiving Stations for the GNSS Based Transportation Infrastructure Network Analyzing the Environment of Site Candidates

Son

Kim²,

Lee³

et al. 2012

The Journal of Korea Navigation Institute

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In this paper a three step procedure was derived to select the GNSS network receiving site candidates for GNSS based infrastructure technology development and according to the proposed procedure the 4 site candidates was selected for final network configuration. In the first step, the site requirement was produced for GNSS based infrastructure technology development referring regulation of the international organizations related to permanent GNSS data receiving and the first candidates were selected using the proposed requirement.In the second step, the second candidates were selected among the first candidates by analyzing the visual measurement, environment test and so on. In the third step the final candidates were selected among the second candidates by analyzing sky clearance, radio frequency interference. Through above the three step procedure 16,7,4 candidates of site were selected sequentially and receiving station site could be effectively selected.

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Reference station network based RTK systems-concepts and progress

Cited by 66 publications

References 11 publications

Performance of Single Base RTK GNSS Method versus Network RTK

Performance of Single Base RTK GNSS Method versus Network RTK

Study on the influence of stochastic properties of correction terms on the reliability of instantaneous network RTK

Site Selection Method of Receiving Stations for the GNSS Based Transportation Infrastructure Network Analyzing the Environment of Site Candidates

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