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Ableitung vertikaler Landbewegungen an der deutschen Nord- und Ostseeküste aus GNSS- und PS-Auswertungen

Tengen, Dieter; Riedel, Anika; Riedel, Björn; Gerke, Markus; Niemeier, Wolfgang (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

Die Ableitung und Modellierung von vertikalen Landbewegungen an der deutschen Nord- und Ostseeküste hat u.a. das Ziel, den Einfluss der Landsenkung bzw. –hebung an der Küste von scheinbaren Pegelanstiegen trennen zu können. ...
Analysis of the Carrier Phase Multipath Error in the Context of Correction Maps for Urban Navigation

Ruwisch, Fabian; Ren, Le; Skupin, Christian; Kersten, Tobias; O'Connor, Marcus; Schön, Steffen; Wübbena, Temmo (Edinburgh : Royal Institute of Navigation, 2021-11-16)

One of the most important functions for the safety of autonomous driving is the self-localisation of a moving platform. The GNSS (Global Navigation Satellite System) sensor is - compared to other sensors as, e.g., video, ...
Antenna specific IfE-robot based code phase delays and its impact on positioning and navigation

Kersten, Tobias; Schön, Steffen (Piscataway, NJ : IEEE, 2012)

The Institut für Erdmessung (IfE) is an official IGS calibration institution, calibrating phase center variations (PCV) for receiver antennae routinely in the field, using the actual GNSS satellite signals in space. Current ...
Bestimmung und Validierung von Phasenzentrumskorrektionen für Multi-GNSS-Signale

Kröger, Johannes; Breva, Yannick; Kersten, Tobias; Schön, Steffen (Stuttgart : Frontiers of Geodetic Science, 2019-09-17)

Eine genaue Positionsbestimmung mittels GNSS basiert auf einem präzisen Signalempfang. Im Falle von Trägerphasenmessung stellt ein gleichförmiger Kugelstrahler eine ideale Empfängerantenne dar. Abweichungen von dieser ...
Bestimmung von Codephasen-Variationen bei GNSS-Empfangsantennen und deren Einfluss auf die Positionierung, Navigation und Zeitübertragung

Kersten, Tobias (München : C.H. Beck, 2014-12)

Die globale Positionierung, Navigation sowie Zeit- und Frequenzübertragung [positioning, navigation and timing] (PNT) ist in der heutigen Gesellschaft zu einem integralen Bestandteil des täglichen Lebens geworden, so dass ...
Carrier-phase multipath in satellite-based positioning

Smyrnaios, Marios (Hannover : Leibniz Universität Hannover, 2016)

[no abstract]
Codephase center corrections for multi GNSS signals and the impact of misoriented antennas

Breva, Yannick; Kröger, Johannes; Kersten, Tobias; Schön, Steffen (Vienna, Austria : European Geophysical Union (EGU), 2020)

In absolute positioning approaches, e.g. Precise Point Positioning (PPP), antenna phase center corrections (PCC) have to be taking into account. Beside PCC for carrier phase measurements, also codephase center corrections ...
Comparison concept and quality metrics for GNSS antenna calibrations: Cause and effect on regional GNSS networks

Kersten, Tobias; Kröger, Johannes; Schön, Steffen (Heidelberg : Springer, 2022)

Precise values for absolute receiver antenna phase centre corrections (PCC) are one prerequisite for high-quality GNSS applications. Currently, antenna calibrations are performed by different institutes using a robot in ...
Coordinate Frames and Transformations in GNSS Ray-Tracing for Autonomous Driving in Urban Areas

Baasch, Kai-Niklas; Icking, Lucy; Ruwisch, Fabian; Schoen, Steffen (Basel : MDPI, 2023)

3D Mapping-Aided (3DMA) Global Navigation Satellite System (GNSS) is a widely used method to mitigate multipath errors. Various research has been presented which utilizes 3D building model data in conjunction with ray-tracing ...
Deficiencies of Phase Centre Models: Assessing the impact on geodetic parameters

Kersten, Tobias; Kröger, Johannes; Breva, Yannick; Schön, Steffen (München : European Geosciences Union, 2019-04-08)

Precise GNSS applications like positioning, navigation and timing (PNT) as well as troposphere studies require consistent and accurate calibration values of receiver antennas. Nowadays, they are available by several ...
Determination of Phase Center Corrections for Galileo Signals

Kröger, Johannes; Breva, Yannick; Kersten, Tobias; Schön, Steffen (Zürich : European Space Agency (ESA) and ETH Zürich, 2019-09-04)

GNSS are widely used for positioning, navigation and timing (PVT). The quality of results depends on the antenna in use and the capability to take antenna specific effects into account. The most prominent corrections are ...
Estimation and validation of receiver antenna codephase variations for multi GNSS signals

Breva, Yannick; Kröger, Johannes; Kersten, Tobias; Schön, Steffen (Zürich : European Space Agency (ESA) and ETH Zürich, 2019-09-04)

Besides antenna phase center corrections (PCC) for carrier phase measurements, which have to be considered for precise GNSS application, also codephase variations (CPV) exist. These are antenna dependent delays of the code ...
Evaluating the Urban Trench Model for Improved Positioning in Urban Areas

Icking, Lucy (Hannover : Gottfried Wilhelm Leibniz Universität, Institut für Erdmessung, 2019-09-11)

Urban environments still form a challenge for Global Navigation Satellite System (GNSS) positioning due to its diffcult conditions for signal propagation. Many obstruction sources disturb the GNSS signal, signal loss or ...
Feasibility of Consumer Grade GNSS Receivers for the Integration in Multi-Sensor-Systems

Kersten, Tobias; Paffenholz, Jens-André (Basel : MDPI, 2020)

Various GNSS applications require low-cost, small-scale, lightweight and power-saving GNSS devices and require high precision in terms of low noise for carrier phase and code observations. Applications vary from navigation ...
Geodetic monitoring of subrosion-induced subsidence processes in urban areas: Concept and status report

Kersten, Tobias; Kobe, Martin; Gabriel, Gerald; Timmen, Ludger; Schön, Steffen; Vogel, Detlef (Berlin : De Gruyter, 2017)

The research project SIMULTAN applies an advanced combination of geophysical, geodetic, and modelling techniques to gain a better understanding of the evolution and characteristics of sinkholes. Sinkholes are inherently ...
Geodetic-Gravimetric Monitoring of Mountain Uplift and Hydrological Variations at Zugspitze and Wank Mountains (Bavarian Alps, Germany)

Timmen, Ludger; Gerlach, Christian; Rehm, Till; Völksen, Christof; Voigt, Christian (Basel : MDPI, 2021)

In 2004, first absolute gravity (AG) measurements were performed on the top of Mt. Zugspitze (2 sites) and at the foot (1 site) and top (1 site) of Mt. Wank. Mt. Wank (summit height 1780 m) and Mt. Zugspitze (2960 m) are ...
A Global Collaboration to Enhance GNSS Receiver Antenna Calibration: The IGS Antenna Ring Campaign

Kersten, Tobias; Bilich, Andria; Sutyagin, Igor; Schön, Steffen (Wien : European Geophysical Union (EGU), 2024)

This contribution provides an overview of the current status of a global campaign of nine calibration organisations, initiated one and a half years ago, outlines the calibration and evaluation concept for carrier phase ...
GNSS-based calibration of GRACE accelerometers

Koch, Igor; Shabanloui, Akbar; Flury, Jakob; Müller, Jürgen (2017-07-30)

In this study, two approaches for the determination of total non-gravitational accelerations acting on GRACE were investigated. To investigate two approaches, GRACE Level-1B data including accelerometer sensor data, GNSS ...
Impact of Different Phase Center Correction Values on Geodetic Parameters: A Standardized Simulation Approach

Kröger, Johannes; Kersten, Tobias; Breva, Yannick; Brekenkamp, Mareike; Schön, Steffen (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2022-05-24)

For highly precise and accurate positioning and navigation solutions with GNSS, it is mandatory to take all error sources – including phase center corrections (PCC) – adequately into account. These corrections are provided ...
Impact of robot antenna calibration on dual-frequency smartphone-based high-accuracy positioning: a case study using the Huawei Mate20X

Darugna, Francesco; Wübbena, Jannes B.; Wübbena, Gerhard; Schmitz, Martin; Schön, Steffen; Warneke, André (Berlin : Springer, 2020)

The access to Android-based Global Navigation Satellite Systems (GNSS) raw measurements has become a strong motivation to investigate the feasibility of smartphone-based positioning. Since the beginning of this research, ...

Now showing items 1-20 of 43

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