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Dissertations / Theses on the topic 'Precise point positioning method'

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Published: 4 June 2021

Last updated: 8 February 2022

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1

Jokinen, Altti. "Enhanced ambiguity resolution and integrity monitoring methods for Precise Point Positioning." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/24806.

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Centimetre-level Global Navigation Satellite System (GNSS) based positioning is increasingly relevant for a large number of applications. Currently, this level of GNSS positioning accuracy is most commonly achieved using the conventional Real Time Kinematic (cRTK) method. In order to achieve such high-accuracies with cRTK, the distance (baseline) between the user and reference station must typically be shorter than 50 km for dual-frequency GNSS receivers. To address the limitations of cRTK, the Precise Point Positioning (PPP) method, which does not require local reference networks, was develop

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2

Darling, Samantha. "Velocity Variations of the Kaskawulsh Glacier, Yukon Territory, 2009-2011." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23511.

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Laser altimetry and satellite gravity surveys indicate that the St Elias Icefields are currently losing mass and are among the largest non-polar sea level contributors in the world. However, a poor understanding of glacier dynamics in the region is a major hurdle in evaluating regional variations in ice motion and the relationship between changing surface conditions and ice flux. This study combines in-situ dGPS measurements and advanced Radarsat-2 (RS-2) processing techniques to determine daily and seasonal ice velocities for the Kaskawulsh Glacier from summer 2009 to summer 2011. Three perma

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Pereira, Luiz Antonio. "Atualização da rede GPS de São Carlos e a avaliação do método PPP em comparação com o ajustamento de redes geodésicas." Universidade Federal de São Carlos, 2007. https://repositorio.ufscar.br/handle/ufscar/4268.

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Made available in DSpace on 2016-06-02T20:00:29Z (GMT). No. of bitstreams: 1 2300.pdf: 6404032 bytes, checksum: e8ddeb3d63aa24d2f243dee3d1114c99 (MD5) Previous issue date: 2007-12-20<br>Atulim (2002) and Racanicchi (2003) had planned and implemented a geodetic GPS network in São Carlos city, which needed maintenance and revision. The proposals of this dissertation had consisted of: i) to bring up to date the GPS geodetic network in the city of São Carlos and to make it compatible with the SIRGAS2000 (Geocentric Reference System of Americas 2000), with new network adjustment and injunction in

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4

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

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6

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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7

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 sta

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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 kommunikati

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9

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 const

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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 Mode

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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 accurac

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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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13

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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Cowles, Philippa Catherine. "Sidereal filtering for multi-GNSS precise point positioning and deformation monitoring." Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/3815.

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For earthquake and tsunami early-warning, it is crucial that displacements resulting from earthquakes are recorded with speed and accuracy. Traditional methods based on seismometer data often suffer from errors during integration which results in the maximum displacement not being accurately recorded. In contrast, Global Navigation Satellite Systems (GNSS) can measure permanent static displacement directly; however it too is subject to errors, the main error of which is multipath. Multipath can lead to errors in the measurement of small displacements or mask the displacement completely. Multip

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15

Shirazian, Masoud. "Remarks on the quality of GPS precise point positioning using phase observations." Licentiate thesis, KTH, Geoinformatik och Geodesi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93966.

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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

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16

Choy, Sue Lynn, and suelynnc@gmail com. "An Investigation into the Accuracy of Single Frequency Precise Point Positioning (PPP)." RMIT University. Mathematical and Geospatial Sciences, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091105.115902.

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This thesis investigates the major errors and processes affecting the performance of a viable, standalone point positioning technique known as single frequency Precise Point Positioning (PPP). The PPP processing utilises both single frequency code and carrier phase GPS observables. The mathematical model implemented is known as the code and quasi-phase combination. Effective measures to improve the quality of the positioning solutions are assessed and proposed. The a priori observations sigma (or standard deviation) ratio in the sequential least squares adjustment model plays a significa

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Park, Kwan-dong. "Determination of glacial isostatic adjustment parameters based on precise point positioning using GPS /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004354.

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Deliktas, Hilmi Can. "Investigation on the contribution of GLONASS observations to GPS Precise Point Positioning (PPP)." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1468936251.

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Morán, Guillermo Martinez. "Results for Precise GPS Trajectography Computation without Base Station." International Foundation for Telemetering, 2015. http://hdl.handle.net/10150/596434.

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ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NV<br>The use of differential GPS post-procesing for precise trajectography computation has been widely used since early 90s. Up to recent dates, installation of a GPS receiver in a well known position (base station) has been mandatory. Operating range from this base station varies from 50 km up to 100 km, depending on the accuracy required, which impose single or dual frequency GPS technique. Nowadays,

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Hakala, Tim. "Settling-Time Improvements in Positioning Machines Subject to Nonlinear Friction Using Adaptive Impulse Control." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/1061.

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A new method of adaptive impulse control is developed to precisely and quickly control the position of machine components subject to friction. Friction dominates the forces affecting fine positioning dynamics. Friction can depend on payload, velocity, step size, path, initial position, temperature, and other variables. Control problems such as steady-state error and limit cycles often arise when applying conventional control techniques to the position control problem. Studies in the last few decades have shown that impulsive control can produce repeatable displacements as small as ten nanomete

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Abdallah, Ashraf [Verfasser], and Volker [Akademischer Betreuer] Schwieger. "Precise point positioning for kinematic applications to improve hydrographic survey / Ashraf Abdallah ; Betreuer: Volker Schwieger." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2016. http://d-nb.info/1126645877/34.

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Rovira, Garcia Adrià. "Consolidation and assessment of a technique to provide fast and precise point positioning (Fast-PPP)." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/398141.

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The research of this paper-based dissertation is focused on the Fast Precise Point Positioning (Fast-PPP) technique. The novelty relies on using an accurate ionosphere model, in combination with the standard precise satellite clock and orbit products, to reduce the convergence time of state-of-the-art high-accuracy navigation techniques from approximately one hour to few minutes. My first contribution to the Fast-PPP technique as a Ph.D. student has been the design and implementation of a novel user navigation filter, based on the raw treatment of undifferenced multi-frequency code and carrie

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Shi, Xin. "Carrier-phase based real-time static and kinematic precise point positioning Using GPS and GALILEO." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/5675.

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Over the last few years, there has been a rising demand for sub-metre accuracy (and higher) for navigation and surveying using signals from Global Navigation Satellite Systems (GNSS). To meet this rising demand, many precise positioning techniques and algorithms using the carrier-phase observable have been developed. Currently, high accuracy Real-Time Kinematic (RTK) positioning is possible using relative or differential techniques which require one GNSS user receiver and at least one other as the reference (known) station within a certain distance from the user. Unlike these conventional diff

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Goode, Matthew Emyr David. "Quality control procedures for GNSS precise point positioning in the presence of time correlated residuals." Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2533.

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Precise point positioning (PPP) is a technique for processing Global Navi- gation Satellite Systems (GNSS) data, often using recursive estimation methods e.g. a Kalman Filter, that can achieve centimetric accuracies using a single receiver. PPP is now the dominant real-time application in o shore marine positioning industry. For high precision real-time applications it is necessary to use high rate orbit and clock corrections in addition to high rate observations. As Kalman filters require input of process and measurement noise statistics, not precisely known in practice, the filter is non-opt

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Salazar, Hernández Dagoberto José. "Precise GPS-based position, velocity and acceleration determination: algorithms and tools." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/77654.

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Esta tesis doctoral llevó a cabo el estudio, desarrollo e implementación de algoritmos para la navegación con sistemas globales de navegación por satélite (GNSS), enfocándose en la determinación precisa de la posición, velocidad y aceleración usando GPS, en modo post-procesado y lejos de estaciones de referencia. Uno de los objetivos era desarrollar herramientas en esta área y hacerlas disponibles a la comunidad GNSS. Por ello el desarrollo se hizo dentro del marco del proyecto preexistente de software libre llamado GPS Toolkit (GPSTk). Una de las primeras tareas realizadas fue la validac

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Wen, Zhibo [Verfasser], Christoph-Georg [Akademischer Betreuer] [Gutachter] Günther, and Bernhard [Gutachter] Hofmann-Wellenhof. "Bias Estimation for Precise Point Positioning / Zhibo Wen ; Gutachter: Bernhard Hofmann-Wellenhof, Christoph-Georg Günther ; Betreuer: Christoph-Georg Günther." München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1144483441/34.

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Reußner, Nico [Verfasser], Lambert [Akademischer Betreuer] Wanninger, Matthias [Akademischer Betreuer] Becker, and Mirko [Akademischer Betreuer] Scheinert. "Die GLONASS-Mehrdeutigkeitslösung beim Precise Point Positioning (PPP) / Nico Reußner. Betreuer: Lambert Wanninger. Gutachter: Lambert Wanninger ; Matthias Becker ; Mirko Scheinert." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://d-nb.info/110035610X/34.

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Mohammed, Jareer Jaber. "Precise Point Positioning (PPP) : GPS vs. GLONASS and GPS+GLONASS with an alternative strategy for tropospheric Zenith Total Delay (ZTD) estimation." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/45468/.

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Different Global Navigation Satellite System (GNSS) constellations are available these days. This has led to an increase in the number of satellites available for the user, and that presents different performance levels for the user requirements like accuracy and convergence time. However, these benefits come from different constellations that have different reference times and for some, different frequencies. At the same time, the Precise Point Positioning (PPP) has also been presented as being a position solution within a certain level of accuracy and precision. Therefore, it is important to

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Sumaya, Hael [Verfasser], Lambert [Gutachter] Wanninger, Bernhard [Gutachter] Heck, and Volker [Gutachter] Schwieger. "GNSS-Precise Point Positioning (PPP) mittels ionosphären-freier Auswertung von Einfrequenz-Messungen / Hael Sumaya ; Gutachter: Lambert Wanninger, Bernhard Heck, Volker Schwieger." Dresden : Technische Universität Dresden, 2019. http://d-nb.info/1226902618/34.

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Xu, Yan [Verfasser], Harald [Akademischer Betreuer] Schuh, Harald [Gutachter] Schuh, Luísa [Gutachter] Bastos, and Roman [Gutachter] Galas. "GNSS precise point positioning with application of the equivalence principle / Yan Xu ; Gutachter: Harald Schuh, Luísa Bastos, Roman Galas ; Betreuer: Harald Schuh." Berlin : Technische Universität Berlin, 2016. http://d-nb.info/1156274087/34.

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Serantoni, Eugenio. "Posizionamento cinematico di precisione: confronto tra tecniche GNSS differenziate ed indifferenziate." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/2660/.

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Corelli, Lorenzo. "Rilevamento satellitare di cicli in percorsi urbani." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016.

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Lo scopo di questo lavoro è sperimentare l’impiego di ricevitori a basso costo per il posizionamento di cicli in ambito urbano. Questo tipo di rilievo trova ampio impiego nello studio e verifica delle funzionalità del reticolo delle piste ciclabili. Il rilievo effettuato in condizioni di scarsa visibilità verso la costellazione satellitare e in presenza di riflessioni multiple indotte da superfici verticali, quali quelle degli edifici in ambito urbano, risulta affetto da specifiche problematiche che si è cercato di affrontare nella presente tesi. In particolare si è analizzato l’effetto del “

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Azambuja, José Luiz Fay de. "Potencialidades de serviços on-line de Posicionamento por Ponto Preciso em aplicações geodésicas: uma análise envolvendo longo período de dados das estações da RBMC." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/130562.

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Um método de posicionamento por GNSS (Global Navigation Satellite System) que vem se popularizando nos últimos anos é o Posicionamento por Ponto Preciso (PPP). Este método de posicionamento se utiliza de dados de apenas um receptor e requer, fundamentalmente, o uso de efemérides e correções dos relógios dos satélites precisos. O PPP nos últimos anos ganhou um impulso significativo em sua popularidade devido, principalmente, ao surgimento de serviços gratuitos de processamento on-line. Entre estes serviços on-line de processamento de PPP, destaca-se o fornecido pelo NRCan (Natural Resource Cana

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Capilla, Romá Raquel. "Aportación al estudio de la capacidad de los modelos conceptuales en posicionamiento absoluto preciso (Precise Point Positioning) para tiempo real a través del análisis del rendimiento de productos y prototipos en un escenario multi-constelación GNSS." Doctoral thesis, Editorial Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/52814.

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[EN] Precise Point Positioning (PPP) method involves an absolute positioning technique from a single receiver with GNSS (Global Navigation Satellite Systems). Its theoretical basis consists of solving the position with observations using a single receiver, with clock and orbit state models, among other products. The main advance concerning the current differential technique is that differential or relative positioning uses the double-differences solution that requires, at least, two receivers to get a precise position or a receiver connected to a network of reference stations. However, unt

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Puchrik, Lukáš. "Aspekty vyhodnocení měření GNSS." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-392288.

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The thesis deals with processing of epoch-wise GNSS measurements from local geodynamic network Sněžník. Its aim is to evaluate the geodynamics in the area of Králický Sněžník Massif and to assess the capabilities of epoch-wise GNSS measurements to detect the geodynamic movements. Within the thesis the comprehensive processing of all the GNSS measurements observed between years 1997 and 2011 is realized using the reprocessed products of first IGS reprocessing Repro1. Bernese GPS software version 5.0 is used for all the processing.

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Faustino, Renata Cristina [UNESP]. "Posicionamento por ponto preciso estático e cinemático: implementação e análise." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/86797.

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Made available in DSpace on 2014-06-11T19:22:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-10-31Bitstream added on 2014-06-13T19:48:45Z : No. of bitstreams: 1 faustino_rc_me_prud.pdf: 956028 bytes, checksum: 4518bd21cfc75ed14c3e4e793a14ec55 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Nesta dissertação investiga-se o Posicionamento por Ponto Preciso (PPP), nos modos estático e cinemático, utilizando o Filtro de Kalman Estendido. Foram corrigidos os erros devido aos efeitos da refra

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Rosa, Guilherme Poleszuk dos Santos [UNESP]. "Análise de séries temporais de coordenadas estimadas com GPS: uma proposta metodológica para eliminação de efeitos sazonais." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/86783.

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Made available in DSpace on 2014-06-11T19:22:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-10-31Bitstream added on 2014-06-13T19:48:44Z : No. of bitstreams: 1 rosa_gps_me_prud.pdf: 9069576 bytes, checksum: d425dc3fdddbb18d5468027b620176e1 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>As redes ativas GPS tem se tornando cada vez mais utilizadas nos levantamentos geodésicos. As estações que fazem parte dessas redes têm suas coordenadas determinadas com alta precisão que, devido à estabilidade na sua construção e disponibilidade de dados, são chamad

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Tozoni, Davi Colli 1988. "Solving the art gallery problem = a practical and robust method for optimal point guard positioning = Resolução do problema da galeria de arte: um método prático e robusto para o posicionamento ótimo de guardas-ponto." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275523.

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Orientadores: Cid Carvalho de Souza, Pedro Jussieu de Rezende<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação<br>Made available in DSpace on 2018-08-25T16:57:43Z (GMT). No. of bitstreams: 1 Tozoni_DaviColli_M.pdf: 4212278 bytes, checksum: afb91e202a72e28729ff14334901884f (MD5) Previous issue date: 2014<br>Resumo: Nesta dissertação, apresentamos nossa pesquisa sobre o Problema da Galeria de Arte (AGP), um dos problemas mais estudados em Geometria Computacional. O AGP, que é um problema NP-difícil, consiste em encontrar o número mínimo de guardas suficien

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Rosa, Guilherme Poleszuk dos Santos. "Análise de séries temporais de coordenadas estimadas com GPS : uma proposta metodológica para eliminação de efeitos sazonais /." Presidente Prudente : [s.n.], 2008. http://hdl.handle.net/11449/86783.

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Resumo: As redes ativas GPS tem se tornando cada vez mais utilizadas nos levantamentos geodésicos. As estações que fazem parte dessas redes têm suas coordenadas determinadas com alta precisão que, devido à estabilidade na sua construção e disponibilidade de dados, são chamadas estações de referência. Os dados podem ser empregados numa diversidade de pesquisas e projetos, sendo um dos mais comuns atualmente os de levantamentos geodésicos. O estudo e monitoramento do vapor d'água na atmosfera e movimento de placas litosféricas são exemplos de aplicações. Dentre os métodos de posicionamento GPS,

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Faustino, Renata Cristina. "Posicionamento por ponto preciso estático e cinemático : implementação e análise /." Presidente Prudente : [s.n.], 2006. http://hdl.handle.net/11449/86797.

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Orientador: João Frnacisco Galera Monico<br>Banca: Paulo de Oliveira Camargo<br>Banca: Leonardo Castro de Oliveira<br>Nesta dissertação investiga-se o Posicionamento por Ponto Preciso (PPP), nos modos estático e cinemático, utilizando o Filtro de Kalman Estendido. Foram corrigidos os erros devido aos efeitos da refração troposférica, relatividade, movimento de rotação da Terra, variações das marés terrestres, correção do centro de fase da antena do satélite e fase Wind- up. Os efeitos devido à ionosfera foram minimizados através da combinação linear Ion-Free. A perda de ciclo foi detectada atr

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Chiu, Kuan-Wei, and 邱冠維. "Near Real-Time GPS Buoy Positioning Using Precise Point Positioning Techniques." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/21621715181028872845.

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碩士<br>國立成功大學<br>測量及空間資訊學系碩博士班<br>97<br>The GPS buoy is a floating buoy equipped with a geodetic-grade dual-frequency GPS receiver and has been demonstrated to effectively and economically collect sea level data. In order to eliminate the systematic errors of GPS buoy, traditional DGPS (Differential Global Positioning System) techniques is used to provide positional information of GPS buoy, thus an additional GPS receiver is required to set up as a reference station. Because International GNSS Service (IGS) recently provides the precise ephemeris and the corrections of satellites clock, a novel

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Reußner, Nico. "Die GLONASS-Mehrdeutigkeitslösung beim Precise Point Positioning (PPP)." Doctoral thesis, 2015. https://tud.qucosa.de/id/qucosa%3A29464.

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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 Mode

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Marreiros, João Paulo Ramalho. "Kinematic GNSS Precise Point Positioning - Aplication to marine platforms." Tese, 2013. https://repositorio-aberto.up.pt/handle/10216/66684.

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Chou, Yu-Hsien, and 周育嫻. "Wide-lane Ambiguity Resolution for GNSS Precise Point Positioning." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/n2usd7.

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碩士<br>國立臺灣海洋大學<br>通訊與導航工程學系<br>107<br>Precise Point Positioning (PPP) is a standalone positioning method that is able to provide centimeter-level accuracy without utilizing the difference technique that is needed in the relative positioning method. In this thesis, a new positioning method based on the Melbourne-Wubbena combinations to solve the wide-laning ambiguity value is proposed, which can detect cycle slip and reduce measurement noise in real time. In this thesis, we introduce the application of different observables combinations, such as wide lane, narrow lane and ionosphere-free, and e

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Marreiros, João Paulo Ramalho. "Kinematic GNSS Precise Point Positioning - Aplication to marine platforms." Doctoral thesis, 2013. https://repositorio-aberto.up.pt/handle/10216/66684.

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Hauschild, André [Verfasser]. "Precise GNSS clock-estimation for real-time navigation and precise point positioning / André Hauschild." 2010. http://d-nb.info/1006416471/34.

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Wu, Ming-Che, and 巫明哲. "Improving Single-Frequency GPS Precise Point Positioning Using Ionospheric Models." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/90336766355829295823.

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碩士<br>國立中央大學<br>土木工程研究所<br>99<br>The precise point positioning (PPP) technique is attractive to researchers because it does not require two or more operating GPS receivers. Single frequency measurements make the solution more challenging due to the ambiguity resolution. While dual-frequency carrier phase measurements can construct an ionosphere-free linear combination to removes first-order ionospheric errors. Precise point positioning technology is different from multiple reference stations. It can not use differential techniques to eliminate error sources, such as satellite orbit errors, rec

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Chang, Yung-Sheng, and 張永聖. "A Multi-Epoch Algorithm for Single-Frequency Precise Point Positioning." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/13813168086496536987.

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碩士<br>國立臺灣海洋大學<br>通訊與導航工程學系<br>104<br>GNSS has been widely used in many places, and the positioning accuracy requirements are also increasing. Among the methods of positioning, PPP is a method that only needs a single receiver and is not affected by the limitation of the distance of reference station. To achieve centimeter-level accuracy, we have to use carrier phase measurements. However, there will be an ambiguity problem for using carrier phase measurement. In this thesis, we propose an algorithm for single-frequency PPP. At first, we combine pseudorange measurement and carrier phase measur

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Jhih-JiaChen and 陳志嘉. "Absolute Site Velocity Estimation Using The GPS Precise Point Positioning Technique." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/85119443296904143375.

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Hu, Ching-Yan, and 胡清硯. "Precise Point Positioning using GNSS Observables from an Android-O Smartphone." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/x62jn5.

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碩士<br>國立臺灣海洋大學<br>通訊與導航工程學系<br>107<br>The Global Navigation Satellite System (GNSS) has been widely used in life, and the requirements for accuracy are getting higher and higher. Precise Point Positioning (PPP) is a method that requires only a single receiver and is not limited by the distance of the reference station. Now, the demand for satellite positioning and navigation has increased dramatically. The positioning accuracy is usually between 5 to 10 meters. It is also urgent to improve the positioning accuracy of mobile phones. This paper will compare the difference between Civil navigatio

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