Analyzing GNSS data in precise point positioning software

Leandro, Rodrigo; Santos, Marcelo C.; Langley, Richard B.

doi:10.1007/s10291-010-0173-9

Cited by 89 publications

(56 citation statements)

References 6 publications

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“…precise ephemeris and clock parameters, in the Ionosphere-Free linear combination considerably increases the accuracy of computing the final products from the equation (1). Application of precise IGS services products in the Ionosphere-Free linear combination for undifferentiated GNSS (Global Navigation Satellite System) observations is named the method of Precise Point Positioning (PPP) [7]. The PPP method is increasingly used in satellite measurements using the GNSS observation only from one receiver.…”

Section: Methodsmentioning

confidence: 99%

Application of GPS sensor for recovery of precise position of aircraft in air transport

Krasuski¹,

Ćwiklak²

2017

Engineering for Rural Development

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Abstract. The GNSS satellite technique is applied for a designation of the true position of the aircraft vehicle in air transport. In case of air transport, the GNSS satellite technique is implemented within the ABAS, SBAS and GBAS augmentation systems. The aim of this paper is to present and describe the results of applying the GNSS satellite technique in the ABAS augmentation system in air transport. The research experiment was conducted on 1st June 2010 (01.06.2010) at late morning hours on the airfield in the town of Dęblin in the Lubelskie Voivodeship, in south-eastern Poland. Within the research experiment, nearby Dęblin airfield a flight test was executed using a Cessna 172 plane. During the flight test, the dual frequency Topcon HiperPro receiver was installed in the pilot's cabin of the Cessna 172 aircraft. The Topcon HiperPro receiver collected a GPS code, phase and Doppler measurements in order to recover the true position of the aircraft. In this paper the authors present the results of positioning the Cessna 172 during the phase of landing based on the solution of the GPS satellite technique. The position of the aircraft was estimated by means of the Precise Point Positioning (PPP) method in GAPS software for un-difference GPS code and phase observations. The PPP method is applied in air navigation as a precise technique for recovery of position of aircrafts. Especially, designation of true position of the aircraft is very important at the phase of landing on the aerodrome. In this paper, the obtained accuracy for XYZ geocentric coordinates of the aircraft is better than 6 cm at the phase of landing. The precision of the aircraft coordinates from GAPS software was compared with the values from magicPPP and CSRS-PPP softwares. The dispersion of the difference of the aircraft coordinates between GAPS and CSRS-PPP softwares is between -0.5 m and +1.2 m. In addition, the dispersion of the difference of the aircraft coordinates between GAPS and magicPPP softwares is between -0.9 m and +1.8 m.

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Section: Methodsmentioning

confidence: 99%

Application of GPS sensor for recovery of precise position of aircraft in air transport

Krasuski¹,

Ćwiklak²

2017

Engineering for Rural Development

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“…przedstawiono odpowiednio na (Rys. 3,5,7,9). Natomiast wartości odchyłek współrzędnej wysokości H pozycji na punktach osnowy pomiarowej dla sesji o długości 0.5, 1, 2, 3, 6 godz.…”

Section: Wyniki Opracowania Sesji Obserwacyjnychunclassified

Dokładność Wyznaczania Pozycji Z Zastosowaniem Permanentnych Usług Internetowych PPP (Precise Point Positioning)

Malinowski

2017

ZNPRzBiS

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Precyzyjne pozycjonowanie PPP to metoda wyznaczania pozycji przy pomocy samodzielnego odbiornika GNSS. Może stanowić alternatywną technikę do pomiarów różnicowych gdzie niezbędnym jest utrzymanie łączności z pojedynczą stacją RTK lub regionalną siecią stacji referencyjnych RTN. Metoda precyzyjnego pomiaru PPP może w szczególności sprawdzić się w obszarach o słabo rozwiniętej infrastrukturze stacji naziemnych. W niniejszej pracy przedstawiono wyniki analizy dokładności precyzyjnego wyznaczania pozycji na wierzchołkach trójkątnej osnowy dla obserwacji trwających od 0,5 do 6 godzin z wykorzystaniem bezpłat-nych permanentnych usług internetowych realizujących obliczenia techniką PPP jak: APPS, CSRS-PPP, magicGNSS. Dla każdego punktu osnowy pomiarowej wykonano obliczenia wykorzystując obserwacje GPS i uwzględniając produkty Final. Wykonano ocenę wpływu dokładności jednoczesnego pozycjonowania trzech punktów osnowy pomiarowej na zmianę odległości zredukowanej i wysokości względnej między wierzchołkami badanego trójkąta osnowy.

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“…1 and 2 can be solved using either sequential least squares adjustment or Kalman filtering (cf. Kouba and Heroux, 2001;Hofmann-Wellenhof et al, 2008;Leandro et al 2011;StĊpniak et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…2009; Leandro et al, 2011;StĊpniak et al, 2012).Time needed for the mentioned quality varies between 12 and 24 hours depending on satellites' geometry and station specific environment conditions (Bisnath and Gao, 2009).Decimeter level accuracy is obtained during first hour of observation. The nature of convergence threshold in observation length is exponential with high variability even for single stations (Bisnath and Gao, 2009;Kalita et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Impact of Ocean Tides Loading on Precise Point Positioning Based on FES2004 Model

Kalita

Rzepecka

2015

Artificial Satellites

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ABSTRACT.Precise Point Positioning (PPP) technique as an absolute positioning method requires modeling of effects that influence observations. One of the effects is a displacement of the measurement location due to ocean mass gravitational attraction -ocean tides loading (OTL). The model recommended by the International Earth Rotation and Reference Systems Service (IERS) is FES2004. The paper focuses on impact of applying the particular OTL model on PPP processing. The analysis is based on processing of observations from 24 globally distributed permanent stations and time span of 50 days. The analysis bases on processing intervals from 1 to 24 hours. In addition, the amplitudes of the loads in Poland are evaluated. The OTL model is location dependent, thus the importance of applying this model depends on the location environment. As the PPP is an absolute method, the loads cumulate and transfer nearly directly to the positioning solution. Consequently, for short observation intervals and small loads the application of the model does not play an important role. For the analysed station with high amplitudes of the loads the relative and absolute improvement, of the solution was the highest for height component. By applying the model, the solution improved by 19% or 7.3 mm (as for RMS and 8 hour interval). The distinct improvement for convergence exists for vertical component and threshold below 5 cm. For Poland the vertical component loads were about 5 times smaller and the highest improvement for the analysed station was 3.7% for 4 hour interval and vertical component.

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Analyzing GNSS data in precise point positioning software

Cited by 89 publications

References 6 publications

Application of GPS sensor for recovery of precise position of aircraft in air transport

Application of GPS sensor for recovery of precise position of aircraft in air transport

Dokładność Wyznaczania Pozycji Z Zastosowaniem Permanentnych Usług Internetowych PPP (Precise Point Positioning)

Impact of Ocean Tides Loading on Precise Point Positioning Based on FES2004 Model

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