Relevant bibliographies by topics / Precise Point Positioning

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  1. Journal articles
  2. Dissertations / Theses
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  4. Conference papers

Academic literature on the topic 'Precise Point Positioning'

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Published: 4 June 2021
Last updated: 14 March 2023

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Journal articles on the topic "Precise Point Positioning"

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Ge, Maorong, Jan Douša, Xingxing Li, Markus Ramatschi, Thomas Nischan, and Jens Wickert. "A Novel Real-time Precise Positioning Service System: Global Precise Point Positioning With Regional Augmentation." Journal of Global Positioning Systems 11, no. 1 (June 30, 2012): 2–10. http://dx.doi.org/10.5081/jgps.11.1.2.

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Savchuk, Stepan, Janusz Cwiklak, and Alina Khoptar. "Precise Point Positioning Technique Versus Relative Positioning." Baltic Surveying 12 (June 29, 2020): 39–43. http://dx.doi.org/10.22616/j.balticsurveying.2020.006.

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Precise point positioning is a GNSS based positioning method that is known to regaining more precise information about major systematical errors in its functional model. This method is seen as an advanced version of the conventional absolute positioning method that is able to offer higher accuracy of the estimate parameter. Contrarily, the relative positioning method is able to achieve high precise of the estimated parameters by using two or more receiver. Nowadays because of this development, the PPP technique it started to grow on the detriment of the relative GNSS positioning. PPP, it is able to offer point determination by processing undifferenced dual frequency receiver, combine with precise orbit and clock corrections offered by JPL to obtain centimeter/millimeter accuracy. The aim of this paper is to make a comparative study between Precise Point Positioning (PPP) versus relative positioning under different conditions.
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Voytenko, A. V., and V. L. Bykov. "Precise Point Positioning – short review." Geodesy and Cartography 914, no. 8 (September 20, 2016): 26–30. http://dx.doi.org/10.22389/0016-7126-2016-914-8-26-30.

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Voytenko, A. V. "Realization of the Precise Point Positioning (PPP) technique and its accuracy." Geodesy and Cartography 927, no. 9 (October 20, 2017): 42–49. http://dx.doi.org/10.22389/0016-7126-2017-927-9-42-49.

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The article notes that the replacement of the English name «Precise Point Positioning» (PPP) in Russian-language sources is possible using the term «accurate differential positioning» (TDP) technique. The author proposes to use both terms. This article contains information about the practical implementation of the PPP in the on-line service. The author has analyzed the research on the accuracy of PPP foreign and domestic experts and scholars. The author analyzed the data about the convergence time for PPP solutions. These data belong to another Russian scientist. The results of evaluating the accuracy of the PPP of different scientists led to the next. The author of this article gave the mean square errors topocentric coordinates of the geodetic points. The coordinates of the points must be obtained by dual-frequency GPS-measurements for a period of 24 hours with the help of PPP. The author proposed a formula for the calculation of the mean square error of the spatial position of geodetic point, if its position is obtained in the processing of dual-frequency GPS-observations of less than 24 hours. The article written conclusions about the features, defects and PPP development.
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Bisnath, S., and P. Collins. "Recent Developments in Precise Point Positioning." GEOMATICA 66, no. 2 (June 2012): 103–11. http://dx.doi.org/10.5623/cig2012-023.

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In standard Precise Point Positioning (PPP), the carrier phase ambiguities are estimated as real-valued constants, so that the carrier-phases can provide similar information as the pseudoranges. As a consequence, it can take tens of minutes to several hours for the ambiguities to converge to suitably precise values. Recently, new processing methods have been identified that permit the ambiguities to be estimated more appropriately as integer-valued constants, as they are in relative Real-Time Kinematic (RTK) positioning. Under these conditions, standard ambiguity resolution techniques can be applied to strengthen the PPP solution. The result can be a greatly reduced solution convergence and re-convergence period, representing a significant step toward improving the performance of PPP with respect to that of RTK processing. This paper describes the underlying principles of the method, why the enhancements work, and presents some results.
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Petit, Gérard, and Zhiheng Jiang. "Precise Point Positioning for TAI Computation." International Journal of Navigation and Observation 2008 (February 28, 2008): 1–8. http://dx.doi.org/10.1155/2008/562878.

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We discuss the use of some new time transfer techniques for computing TAI time links. Precise point positioning (PPP) uses GPS dual frequency carrier phase and code measurements to compute the link between a local clock and a reference time scale with the precision of the carrier phase and the accuracy of the code. The time link between any two stations can then be computed by a simple difference. We show that this technique is well adapted and has better short-term stability than other techniques used in TAI. We present a method of combining PPP and two-way time transfer that takes advantage of the qualities of each technique, and shows that it would bring significant improvement to TAI links.
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Bhat, S. P., and D. K. Miu. "Precise Point-to-Point Positioning Control of Flexible Structures." Journal of Dynamic Systems, Measurement, and Control 112, no. 4 (December 1, 1990): 667–74. http://dx.doi.org/10.1115/1.2896193.

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Control strategies to accomplish precise point-to-point positioning of flexible structures are discussed. First, the problem is formulated and solved in closed form using a linear quadratic optimal control technique for a simple system with only one rigid and one flexible mode; the resulting analytical solutions are examined in both the time and frequency domain. In addition, the necessary and sufficient condition for zero residual vibration is derived which simply states that the Laplace transform of the time bounded control input must vanish at the system poles. This criteria is then used to highlight the common features of existing techniques and to outline an alternative design procedure for precise position control of more complicated structures having multiple flexible modes.
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El-Mowafy, A. "Alternative Postprocessing Relative Positioning Approach Based on Precise Point Positioning." Journal of Surveying Engineering 135, no. 2 (May 2009): 56–65. http://dx.doi.org/10.1061/(asce)0733-9453(2009)135:2(56).

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Xiong, Jing, and Fei Han. "Positioning performance analysis on combined GPS/BDS precise point positioning." Geodesy and Geodynamics 11, no. 1 (January 2020): 78–83. http://dx.doi.org/10.1016/j.geog.2019.11.001.

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Tuchband, Tamás. "Gps precise point positioning with kinematic data." Pollack Periodica 6, no. 3 (December 2011): 73–82. http://dx.doi.org/10.1556/pollack.6.2011.3.7.

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Dissertations / Theses on the topic "Precise Point Positioning"

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Nosek, Jakub. "Testování metody Precise Point Positioning." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-414313.

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This diploma thesis deals with the Precise Point Positioning (PPP) method in various variants. The thesis describes the theoretical foundations of the PPP method and the most important systematic errors that affect accuracy. The accuracy of the PPP method was evaluated using data from the permanent GNSS station CADM, which is part of the AdMaS research center. Data of the period 2018 – 2019 were processed. The results of combinations of different GNSS and the results of different observation periods were compared. Finally, the accuracy was verified at 299 IGS GNSS stations.
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Shirazian, Masoud. "Quality description in GPS precise point positioning." Doctoral thesis, KTH, Geodesi och geoinformatik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-118349.

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GPS processing, like every processing method for geodetic applications, relies upon least-squares estimation. Quality measures must be defined to assure that the estimates are close to reality. These quality measures are reliable provided that, first, the covariance matrix of the observations (the stochastic model) is well defined and second, the systematic effects are completely removed (i.e., the functional model is good). In the GPS precise point positioning (PPP) the stochastic and functional models are not as complicated as in the differential GPS processing. We will assess the quality of the GPS Precise Point Positioning in this thesis by trying to define more realistic standard deviations for the station position estimates. To refine the functional model from systematic errors, we have 1) used the phase observations to prevent introducing any hardware bias to the observation equations, 2) corrected observations for all systematic effects with amplitudes of more than 1cm, 3) used undifferenced observations to prevent having complications (e.g. linearly related parameters) in the system of observation equations. To have a realistic covariance matrix for the observations we have incorporated the ephemeris uncertainties into the system of observation equations. Based on the above-mentioned issues a PPP processing method is designed and numerically tested on the real data of some of the International GNSS Service stations. The results confirm that undifferenced stochastic-related properties (e.g. degrees of freedom) can be reliable means to recognize the parameterization problem in differenced observation equations. These results also imply that incorporation of the satellite ephemeris uncertainties might improve the estimates of the station positions. The effect of troposphere on the GPS data is also focused in this thesis. Of particular importance is the parameterization problem of the wet troposphere in the observation equations.

QC 20130218

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Cohenour, John C. "Global Positioning System Clock and Orbit Statistics and Precise Point Positioning." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1249043829.

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Jonsson, Fredrik, and Rickard Jäderberg. "Test av kinematisk Precise Point Positioning i realtid." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-20121.

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Utvecklingen av satellitbaserad positionsbestämning gör det idag befogat att begära låga osäkerheter med GNSS. Det är idag möjligt att uppnå osäkerheter kring centimetern. Bäst mätosäkerhet ger relativ mätning som sker med stöd av antingen enkelstations- eller nätverks-RTK. I Sverige erbjuder Lantmäteriet med sitt SWEPOS ett tätt referensnätverk som förser användaren med korrektionsdata oavsett position inom Sveriges gränser. Dock är det inte alla länder som kan erbjuda denna positionstjänst. Geografiskt stora länder har mycket svårt att skapa ett referensnät, det skulle betyda flera tusen stationer och gör det till en ekonomisk fråga. Det är bl.a. ur den synpunkten andra metoder har växt fram. En av dessa är Precise Point Positioning (PPP). Enligt G. Hedling (personlig kommunikation, 18 mars 2015) har PPP fått en väl etablering inom jordbruket samt på maritima gruv- och oljeplattformar. Metoden är lämplig vid stora öppna ytor och när avståndet till närmsta referensstation är stor. PPP använder sig av absolut positionering och kan mäta både statiskt och kinematiskt och resultat kan fås i realtid och genom efterberäkning. Det ligger i Lantmäteriets intresse att testa kinematisk PPP i Sverige och den här studien testar kinematisk PPP i realtid med programvaran BNC 2.11 och med korrektioner från International GPS Service (IGS). Enligt Bisnath & Gao (2009) erhålls decimeterosäkerhet med kinematisk PPP och för att bestämma dess tillförlitlighet har i den här studien koordinatavvikelse beräknats mellan BNC och enkelstations-RTK med stöd från SWEPOS. Koordinaterna från enkelstations-RTK har vid testerna angivits som de sanna koordinaterna, genom ett statiskt test har det undersökts om det är motiverat. Utifrån den statiska mätningen har även intialiseringstiden kunnat utredas, alltså den tid det tar för PPP att konvergera. Efterberäkningstjänsten CSRS-PPP har också testats och jämförts mot kända koordinater vid den statiska mätningen.Studien visar att efter närmare en timmes observation avviker PPP under 2 dm i plan mot enkelstations-RTK. Den visar också att 15-30 minuters konvergeringstid är nödvändig för att erhålla osäkerheter på några decimeter. Några av de faktorer som påverkar resultatet är bl.a. jonosfärstörning. högt PDOP-värde och antal processerade satelliter i mjukvarorna, hur mycket är svårt att säga. Vid en tappad signal krävs en ny omintialisering på flera tiotals minuter. Studien visar också att det är lämpligt att använda enkelstations-RTK som sanning. Vid den statiska mätningen avviker enkelstations-RTK kring centimetern mot den kända punktens koordinater, vilket anses godtagbart. CSRS-PPP uppvisar bra resultat och är inte mycket sämre än det resultat enkelstations-RTK redovisar.
Today it´s possible to achieve low uncertainties when surveying with GNSS. You can expect uncertainties around centimeter-level. The best results are achieved when using relative-surveying with corrections from single-station- or network-RTK. The Swedish mapping, cadastral and land registration authority (Lantmäteriet) is providing a well-developed network of reference stations. The network, called SWEPOS, offers corrections for its users independent of position within the Swedish borders. Far from all nations has the ability or the financial resources to create such an expanded network. Instead, other methods for satellite surveying have been developed, including Precise Point Positioning (PPP). According to G. Hedling (personal communication, 18 march 2015) PPP is well-established in the agriculture and in the maritime mining- and oil-industry. The method is suitable in open areas and it is independently of nearby reference stations. PPP is using what’s called absolute-surveying. The surveying is performed either kinematic or static and the results can be obtained thru post-processing or in real-time. “Lantmäteriet” has interest in testing kinematic PPP in Sweden and for this thesis kinematic PPP in real-time is tested with BNC 2.11 software and corrections is given from the International GPS Service (IGS). According to Bisnath & Gao (2009) it is possible to achieve uncertainties in decimeter-level with kinematic PPP. To determine the reliability of PPP the deviation has been calculated against single-station-RTK. The single-station-RTK coordinates have in this study been used as the “truth” and in an additional test using static measurements it has been investigated if that’s correct. From the static test the initialization time for PPP as well as the quality of the post-processing service CSRS-PPP has been studied.The results show that after nearly an hour of observation the deviation between PPP and single-station-RTK are below 2 dm for the level-coordinates. The initialization time of 15-30 minutes is necessary to achieve uncertainties of a few decimeters. Elements that are affecting the results are disturbance in the ionosphere, high PDOP and number of processed satellites in the software. In which extent it’s not possible to determine. When the signal is lost between rover and satellites a re-initialization of 15-30 minutes is needed. It also shows that it is reasonable to use single-station-RTK as the “truth”. Single-station-RTK deviates a proximately one centimeter in relation to known coordinates. The post-processing service CSRS-PPP gives remarkably good results not far from what single-station-RTK offers.
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Kvarnström, Victor, and Jessica Wallerström. "Realtidsmätning inom fastighetsbildning med "Precise Point Positioning" (PPP)." Thesis, Högskolan Väst, Avdelningen för data-, elektro- och lantmäteriteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-9503.

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Vid GNSS-positionering i samband med fastighetsbildningsåtgärder används vanligtvis den traditionella RTK-mätningen (Real-Time Kinematic) via SWEPOS nätverks-RTK-tjänst. Denna tjänst kräver mobiltelefontäckning eller motsvarande tvåvägskommunikation, vilket kan vara problematiskt inom områden med bristfällig mobiltelefontäckning. Under dessa förhållanden kan istället PPP-mätning (Precise Point Positioning) vara användbart vid fastighetsbildningsåtgärder då dessa tjänster tar emot korrektionsdata i realtid från satelliter. PPP kräver inte någon mobiltelefontäckning, däremot krävs en kommunikationslänk, en RTX-tjänst för att erhålla korrektioner externt från en RTX-satellit. Syftet med studien är att undersöka möjligheten till att nyttja PPP i realtid vid fastighetsbildningsåtgärder som ett alternativ till traditionell GNSS-mätning med nätverks-RTK. För att PPP ska vara ett alternativ till traditionell GNSS-mätning i realtid krävs det att mätosäkerhetskraven inom fastighetsbildning uppfylls. Mätosäkerheten undersöktes genom att utgå ifrån redan kända koordinater (RIX 95-punkter). Mätningarna har genomförts på fem olika platser i Sverige, Göteborg, Vänersborg, Karlstad, Torsby och Malung-Sälen. Mätdata som erhölls från undersökningsplatserna har analyserats samt jämförts med fastighetsbildningskraven. Resultatet av studien erhölls i form av analyserad mätdata med jämförelser mot redan kända (RIX 95) punkter. Avikelsen från känd RIX 95-punkt redovisas i resultatet utifrån tidsaspekten, den systematiska avvikelsen av translativ art, förändringar i avvikelsen från söder till norr samt utifrån två beräkningsmodeller, varav en translation och en transformation. För att få den erhållna mätdatan från RTX-tjänsten att överensstämma bättre med referenspunkten (RIX 95-punkten) togs beräkningsmodellerna fram för att möjliggöra modellering av systematiska avvikelser som uppkommit och därmed uppfylla kraven inom fasighetsbildningsåtgärder. Genom att ha analyserat och granskat olika samband har det framkommit att efter ca 20 minuters mätning, börjar precisionen för mätningarna att bli stabila. Utifrån resultatet är slutsatsen att PPP inte fungerar vid fastighetsbildningsåtgärder för områden inom stomnät, däremot fungerar metoden för skogs- och jordbruksfastigheter utanför stomnät. Förutsatt att en modellering genom translation alternativt transformation som är framtagen i denna studie används för att justera koordinaterna så fungerar PPP-mätning inom samtliga fastighetsbildningsåtgärder. Detta kräver då att mätdata erhålls efter 20 minuters mätning eller mer.
GNSS positioning in conjunction with the real property is usually used the traditional RTK measuring (Real-Time Kinematic) by SWEPOS network RTK service. This service requires mobile phone coverage or equivalent two-way communication, which can be problematic in areas with poor mobile phone coverage. Under these circumstances, PPP (Point Positioning Precise) could be more useful in real property measures when such services receives the correction data in real time from the satellites. PPP does not require any cell phone coverage, however it requires a communication link, a RTX service to obtain corrections externally from a RTX satellite. The purpose of the study is to examine the possibility of using PPP in real time at the real property as an alternative to traditional GNSS measurements with network RTK. The measurement uncertainty was investigated by starting out from already known coordinates (RIX 95 points). The measurements were performed out at five different locations in Sweden, Gothenburg, Vanersborg, Karlstad, Torsby and Malung-Salen. Measurement data obtained from the observations have been analyzed and compared with real property requirements. The results of the study were obtained in the form of data analyzed by comparison of the known (RIX 95) points. The deviation is known from RIX 95 point recognized in income based on the time factor, the bias of the translative case species, changes in deviation from south to north and from two calculation models, a translation and a transformation. To correct the measured values from the RTX service for a better match to the RIX 95 points calculation models were developed to facilitate the modeling of systematic deviations incurred and meet the demands of real property. Analyzing and examining various relationships have shown that after about 20 minutes of measuring, the precision of the measurements starts to become more stable. Based on the results, the conclusion is that the PPP does not work in real property areas within the core network, however, the method works for forestry and agricultural properties outside the core network. Assuming a modelling through translational alternative transformation, developed in this study is used to adjust the coordinates, the PPP measurement is working in all real property registration measures. This requires that the measurement data is obtained after 20 minutes of measurement or more.
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Martin, Ian. "GNSS precise point positioning : the enhancement with GLONASS." Thesis, University of Newcastle upon Tyne, 2013. http://hdl.handle.net/10443/2192.

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Precise Point Positioning (PPP) provides GNSS navigation using a stand-alone receiver with no base station. As a technique PPP suffers from long convergence times and quality degradation during periods of poor satellite visibility or geometry. Many applications require reliable realtime centimetre level positioning with worldwide coverage, and a short initialisation time. To achieve these goals, this thesis considers the use of GLONASS in conjunction with GPS in kinematic PPP. This increases the number of satellites visible to the receiver, improving the geometry of the visible satellite constellation. To assess the impact of using GLONASS with PPP, it was necessary to build a real time mode PPP program. pppncl was constructed using a combination of Fortran and Python to be capable of processing GNSS observations with precise satellite ephemeris data in the standardised RINEX and SP3 formats respectively. pppncl was validated in GPS mode using both static sites and kinematic datasets. In GPS only mode, one sigma accuracy of 6.4mm and 13mm in the horizontal and vertical respectively for 24h static positioning was seen. Kinematic horizontal and vertical accuracies of 21mm and 33mm were demonstrated. pppncl was extended to assess the impact of using GLONASS observations in addition to GPS in static and kinematic PPP. Using ESA and Veripos Apex G2 satellite orbit and clock products, the average time until 10cm 1D static accuracy was achieved, over a range of globally distributed sites, was seen to reduce by up to 47%. Kinematic positioning was tested for different modes of transport using real world datasets. GPS/GLONAS SPPP reduced the convergence time to decimetre accuracy by up to a factor of three. Positioning was seen to be more robust in comparison to GPS only PPP, primarily due to cycle slips not being present on both satellite systems on the occasions when they occurred, and the reduced impact of undetected outliers.
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Reußner, Nico. "Die GLONASS-Mehrdeutigkeitslösung beim Precise Point Positioning (PPP)." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-202164.

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Precise Point Positioning (PPP) ermöglicht eine präzise Positionsbestimmung mittels globaler Satellitennavigationssysteme (Global Navigation Satellite System, GNSS) ohne die direkte Verwendung der Beobachtungsdaten von regionalen Referenzstationen. Die wesentlichste Einschränkung von PPP im Vergleich zu differenziellen Auswertetechniken (Real-Time Kinematic, RTK) ist die deutlich längere Konvergenzzeit. Voraussetzung für die Verkürzung der Konvergenzzeit ist die Festsetzung der geschätzten Mehrdeutigkeiten auf ganzzahlige Werte. Die Mehrdeutigkeitslösung verlangt ein robustes funktionales Modell und beruht auf einem zweistufigen Mehrdeutigkeitsfestsetzungsverfahren, welches frei von ionosphärischen Einflüssen 1. Ordnung ist. Die sowohl auf Code- als auch auf Phasenbeobachtungen basierende Melbourne-Wübbena-Linearkombination erlaubt hierbei eine einfache Festsetzung der Widelane-Mehrdeutigkeiten. Infolgedessen kann zur Berechnung der ionosphären-freien Linearkombination die im Vergleich zur Wellenlänge der ionosphären-freien Linearkombination deutlich größere Narrowlane-Wellenlänge verwendet werden. Zur Stabilisierung des im Normalfall lediglich auf den Beobachtungsdaten des amerikanischen Global Positioning System (GPS) beruhenden funktionalen Modells können die Beobachtungsdaten des russischen GLObal’naya NAvigatsioannaya Sputnikovaya Sistema (GLONASS) beitragen. Aufgrund der Technik, die GLONASS zur Identifizierung der einzelnen Satelliten einsetzt (Frequency Division Multiple Access, FDMA), unterscheiden sich die Frequenzen der einzelnen Satelliten. Die leicht unterschiedlichen Frequenzen erschweren die Modellierung und Korrektion der instrumentell bedingten Signalverzögerungen (z. B. Fractional-Cycle Biases (FCB)). Vor diesem Hintergrund kann das konventionelle Mehrdeutigkeitsfestsetzungsverfahren nur bedingt für GLONASS verwendet werden. Die Untersuchung der instrumentell bedingten GLONASS-Signalverzögerungen sowie die Entwicklung einer alternativen Methode zur Festsetzung der GLONASS-Mehrdeutigkeiten mit dem Ziel einer kombinierten GPS/GLONASS-Mehrdeutigkeitslösung sind die Schwerpunkte der vorliegenden Arbeit. Die entwickelte alternative Mehrdeutigkeitsfestsetzungsstrategie baut auf der puren Widelane-Linearkombination auf, weshalb globale Ionosphärenmodelle unabdingbar sind. Sie eignet sich sowohl für GLONASS als auch für GPS und zeigt gleichwertige Ergebnisse für beide GNSS, wenngleich im Vergleich zur konventionellen Methode mit geringeren Mehrdeutigkeitsfestsetzungsquoten zu rechnen ist
Precise Point Positioning (PPP) allows for accurate Global Navigation Satellite System (GNSS) based positioning without the immediate need for observations collected by regional station networks. The fundamental drawback of PPP in comparison to differential techniques such as Real-Time Kinematic (RTK) is a significant increase in convergence time. Among a plurality of different measures aiming for a reduction of convergence time, fixing the estimated carrier phase ambiguities to integer values is the key technique for success. The ambiguity resolution asks for a robust functional model and rests upon a two-stage method ruling out first-order ionospheric effects. In this context the Melbourne-Wübbena linear combination of dual-frequency carrier phase and code measurements leverages a simple resolution of widelane ambiguities. As a consequence the in comparison to the wavelength of the ionosphere-free linear combination significantly longer narrowlane wavelength can be used to form the ionosphere-free linear combination. By default the applied functional model is solely based on observations of the Global Positioning System (GPS). However measurements from the GLObal’naya NAvigatsioannaya Sputnikovaya Sistema (GLONASS) can contribute to improve the model’s stability significantly. Due to the technique used by GLONASS to distinguish individual satellites (Frequency Division Multiple Access, FDMA), the signals broadcast by those satellites differ in their frequencies. The resulting slightly different frequencies constitute a barricade for both modelling and correcting any device-dependent signal delays, e.g. fractional-cycle biases (FCB). These facts limit the applicability of the conventional ambiguity-fixing approach when it comes to GLONASS signals. The present work puts a focus both on investigating the device-dependent GLONASS signal delays and on developing an alternative method for fixing GLONASS ambiguities with the ultimate objective of a combined GPS/GLONASS ambiguity resolution. The alternative ambiguity resolution strategy is based on the pure widelane linear combination, for which reason ionospheric corrections are indispensable. The procedure is applicable for GLONASS in the first instance but reveals equivalent results for both GPS and GLONASS. The disadvantage relative to the conventional approach is the reduced ambiguity fixing success rate
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Geng, Jianghui. "Rapid integer ambiguity resolution in GPS precise point positioning." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12116/.

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GPS precise point positioning (PPP) has been used in many scientific and commercial applications due to its high computational efficiency, no need for any synchronous measurements from a nearby reference receiver and homogeneous positioning quality on a global scale. However, these merits are devalued significantly by unresolved ambiguities and slow convergences of PPP. Therefore, this thesis aims at improving PPP’s performance by resolving ambiguities for a single receiver and accelerating the convergences to ambiguity-fixed solutions in order to achieve a centimeter-level positioning accuracy with only a few seconds of measurements. In recent years, ambiguity resolution for PPP has been developed by separating fractional cycle biases (FCBs) from single-receiver ambiguity estimates. One method is to estimate FCBs by averaging the fractional parts of single-difference ambiguity estimates between satellites, and the other is to assimilate FCBs into clocks by fixing undifferenced ambiguities to integers in advance. The first method suffers from a large number of redundant satellite-pair FCBs and unnecessary 15-minute narrow-lane FCBs. Therefore, this thesis suggests undifferenced FCBs and one narrow-lane FCB per satellite-pair pass over a regional area in order to reduce the size of FCB products and achieve comparable positioning quality with that of the original method. Typical tests show that ambiguity resolution dramatically reduces the RMS of differences between hourly and daily position estimates from 3.8, 1.5 and 2.8 cm in ambiguity-float solutions to 0.5, 0.5 and 1.4 cm in ambiguity-fixed solutions for the East, North and Up components, respectively. Likewise, the RMS for real-time position estimates are reduced drastically from 13.7, 7.1 and 11.4 cm to 0.8, 0.9 and 2.5 cm. Of particular note, this improvement can be achieved even at remote receivers which are over a few thousand kilometers from the reference receivers that are used to estimate FCBs. Furthermore, this thesis improves the accuracy of narrow-lane FCB estimates with integer constraints from double-difference ambiguities. In a one-year global network analysis, the RMS of differences for the East component between the daily and IGS weekly estimates is reduced from 2.6 mm in the solutions based on original FCBs to 2.2 mm in the solutions based on improved FCBs. Although small, this improvement is significant and critical to some geophysical studies, such as tectonic motions, sea level rise, and post-glacial rebound. More importantly, for the first time, this thesis provides a theoretical proof for the equivalence between the ambiguity-fixed position estimates derived from the aforementioned two methods. This equivalence is then empirically verified by the overall minimal discrepancies of the positioning qualities between the two methods. However, these discrepancies manifest a distribution of geographical pattern, i.e. the largest discrepancies correspond to sparse networks of reference receivers. This comparison can provide valuable reference for the GPS community to choose an appropriate method for their PPP ambiguity resolution. As the foremost contribution, an innovative method is originally developed in this thesis in order to effectively re-converge to ambiguity-fixed solutions with only a few seconds of measurements. Specifically, ionospheric delays at all ambiguity-fixed epochs are estimated and then predicted precisely to succeeding epochs in the case of re-convergences. The predicted ionospheric delays are first used to correct wide-lane measurements in order to rapidly resolve wide-lane ambiguities. The resulting ionosphere-corrected and ambiguity-fixed wide-lane measurements are then used to tightly constrain narrow-lane measurements and thus speed up narrow-lane ambiguity resolution significantly. As a result, the practicability of real-time PPP is greatly improved by eliminating the unrealistic requirement of a continuous open sky view in most PPP applications. Typical tests illustrate that over 90% of re-convergences can be achieved within five epochs of 1-Hz measurements, rather than the conventional 20 minutes, even if the latency for the predicted ionospheric delays is up to 180 s. Moreover, for a van-borne receiver moving in a GPS-adverse environment where satellite number decreases significantly and cycle slips occur frequently, only when the above rapid re-convergence technique is applied can the rate of ambiguity-fixed epochs dramatically rise from 7.7% to 93.6% of all epochs. Finally, a precise positioning service for the next-generation global RTK, characterized by both global coverage and regional augmentation, is originally proposed in this thesis based on real-time PPP enhanced by rapid (re-)convergences to ambiguity-fixed solutions. It is illustrated that a globally distributed network of 38 stations can ensure that the ambiguity-fixed epochs account for over 95% of all epochs.
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Baños, García Adrián. "Use of precise point positioning techniques in GNSS applications." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76090.

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Toluc, Ahmet Bayram. "Multi-GNSS Precise Point Positioning Using GPS, GLONASS and Galileo." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1471490165.

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Book chapters on the topic "Precise Point Positioning"

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Kouba, Jan, François Lahaye, and Pierre Tétreault. "Precise Point Positioning." In Springer Handbook of Global Navigation Satellite Systems, 723–51. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-42928-1_25.

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Gao, Yang. "Precise Point Positioning (PPP)." In Encyclopedia of Geodesy, 1–5. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-02370-0_13-1.

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Pan, Zongpeng, Hongzhou Chai, Rui Wang, Chunhe Liu, Mingchen Shi, and Wenlong Qi. "Performance Evaluation of Galileo Precise Point Positioning." In Lecture Notes in Electrical Engineering, 422–34. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-7759-4_38.

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Tegedor, Javier, Kees de Jong, Xianglin Liu, Erik Vigen, and Ola Øvstedal. "Real-Time Precise Point Positioning Using BeiDou." In International Association of Geodesy Symposia, 665–71. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/1345_2015_118.

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Xu, Shaoguang, Yongliang Xiong, Dejun Wang, and Xiaoying Gong. "Kinematic Precise Point Positioning Algorithm with Constraint Condition." In Lecture Notes in Electrical Engineering, 541–52. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0940-2_47.

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Guo, Jiang, Xiaotao Li, Xingyu Chen, Jianghui Geng, Qiang Wen, and YuanXin Pan. "Performance Analysis of Multi-GNSS Precise Point Positioning." In China Satellite Navigation Conference (CSNC) 2017 Proceedings: Volume III, 377–87. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4594-3_32.

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van Bree, R. J. P., S. Verhagen, and A. Hauschild. "Real Time Satellite Clocks in Precise Point Positioning." In Geodesy for Planet Earth, 935–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20338-1_117.

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Li, Wei, Peter Teunissen, Baocheng Zhang, and Sandra Verhagen. "Precise Point Positioning Using GPS and Compass Observations." In Lecture Notes in Electrical Engineering, 367–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37404-3_33.

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Yang, Fuxin, Liang Li, Lin Zhao, and Chun Cheng. "GPS/BDS Real-Time Precise Point Positioning for Kinematic Maritime Positioning." In China Satellite Navigation Conference (CSNC) 2017 Proceedings: Volume III, 295–307. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4594-3_26.

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Ramachandran, Duraisamy, Ami Hassan Md Din, Siti Aisah Ibrahim, and Abdullah Hisam Omar. "Real-Time Precise Point Positioning (RT-PPP) for Positioning and Mapping." In GCEC 2017, 891–913. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8016-6_64.

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Conference papers on the topic "Precise Point Positioning"

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Henkel, Patrick. "Precise Point Positioning with Kepler." In 2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall). IEEE, 2019. http://dx.doi.org/10.1109/vtcfall.2019.8891347.

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Oszczak, Bartlomiej. "PRECISE POINT POSITIONING USING REFERENCE POINT INDICATORS." In 14th SGEM GeoConference on INFORMATICS, GEOINFORMATICS AND REMOTE SENSING. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b22/s9.048.

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Laurichesse, Denis, Cedric Rouch, Francois-Xavier Marmet, and Matthieu Pascaud. "Smartphone Applications for Precise Point Positioning." In 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017). Institute of Navigation, 2017. http://dx.doi.org/10.33012/2017.15149.

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Henkel, Patrick, Michele Iafrancesco, and Andreas Sperl. "Precise point positioning with multipath estimation." In 2016 IEEE/ION Position, Location and Navigation Symposium (PLANS). IEEE, 2016. http://dx.doi.org/10.1109/plans.2016.7479694.

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Weiss, M., P. Fenton, E. Powers, and K. Senior. "Frequency transfer using precise point positioning." In 18th European Frequency and Time Forum (EFTF 2004). IEE, 2004. http://dx.doi.org/10.1049/cp:20040942.

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Petit, G., and Z. Jiang. "Precise Point Positioning for TAI computation." In 2007 IEEE International Frequency Control Symposium Joint with the 21st European Frequency and Time Forum. IEEE, 2007. http://dx.doi.org/10.1109/freq.2007.4319104.

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Fumin Lu and Jin Li. "Precise point positioning study to use different IGS precise ephemeris." In 2011 IEEE International Conference on Computer Science and Automation Engineering (CSAE). IEEE, 2011. http://dx.doi.org/10.1109/csae.2011.5952748.

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Innac, Anna, Salvatore Gaglione, and Antonio Angrisano. "Multi-GNSS Single Frequency Precise Point Positioning." In 2018 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea). IEEE, 2018. http://dx.doi.org/10.1109/metrosea.2018.8657857.

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Henkel, Patrick. "Precise Point Positioning for Next-Generation GNSS." In 2020 European Navigation Conference (ENC). IEEE, 2020. http://dx.doi.org/10.23919/enc48637.2020.9317475.

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Henkel, Patrick, and Christoph Gunther. "Precise point positioning with multiple Galileo frequencies." In 2008 IEEE/ION Position, Location and Navigation Symposium. IEEE, 2008. http://dx.doi.org/10.1109/plans.2008.4570102.

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