Browsing by Subject "Geodesy"

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  • Accuracy assessment of mobile mapping point clouds using the existing environment as terrestrial reference 
    Hofmann, Sabine; Brenner, Claus (Göttingen : Copernicus GmbH, 2016)
    Mobile mapping data is widely used in various applications, what makes it especially important for data users to get a statistically verified quality statement on the geometric accuracy of the acquired point clouds or its ...
  • Block-to-point fine registration in terrestrial laser scanning 
    Wang, Jin (Basel : MDPI AG, 2013)
    Fine registration of point clouds plays an important role in data analysis in Terrestrial Laser Scanning (TLS). This work proposes a block-to-point fine registration approach to correct the errors of point clouds from TLS ...
  • Characterisation of GNSS carrier phase data on a moving zero-baseline in urban and aerial navigation 
    Ruwisch, Fabian; Jain, Ankit; Schön, Steffen (Basel : MDPI AG, 2020)
    We present analyses of Global Navigation Satellite System (GNSS) carrier phase observations in multiple kinematic scenarios for different receiver types. Multi-GNSS observations are recorded on high sensitivity and ...
  • 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 of target-and mutual informaton based calibration of terrestrial laser scanner and digital camera for deformation monitoring 
    Omidalizarandi, Mohammad; Neumann, Ingo (Göttingen : Copernicus GmbH, 2015)
    In the current state-of-the-art, geodetic deformation analysis of natural and artificial objects (e.g. dams, bridges,.) is an ongoing research in both static and kinematic mode and has received considerable interest by ...
  • Continuous Navigation of an Inland Vessel with a Synthetic GNSS Antenna 
    Kersten, Tobias; Ren, Le; Schön, Steffen (Bonn : DGON, 2018)
    This paper describes a concept to obtain a continuous navigation and position solution of inland vessels based on a multi-GNSS antenna system. Also known as, “Virtual Receiver” we utilize this approach as an alternative ...
  • A DC-Coupled, HBT-Based Transimpedance Amplifier for the LISA Quadrant Photoreceivers 
    Barranco, German Fernandez; Heinzel, Gerhard (New York, NY : IEEE, 2021)
    [For abstract see PDF]
  • 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 ...
  • GENESIS: co-location of geodetic techniques in space 
    Delva, Pacôme; Altamimi, Zuheir; Blazquez, Alejandro; Blossfeld, Mathis; Böhm, Johannes; Bonnefond, Pascal; Boy, Jean-Paul; Bruinsma, Sean; Bury, Grzegorz; Chatzinikos, Miltiadis; Couhert, Alexandre; Courde, Clément; Dach, Rolf; Dehant, Véronique; Dell’Agnello, Simone; Elgered, Gunnar; Enderle, Werner; Exertier, Pierre; Glaser, Susanne; Haas, Rüdiger; Huang, Wen; Hugentobler, Urs; Jäggi, Adrian; Karatekin, Ozgur; Lemoine, Frank G.; Le Poncin-Lafitte, Christophe; Lunz, Susanne; Männel, Benjamin; Mercier, Flavien; Métivier, Laurent; Meyssignac, Benoît; Müller, Jürgen; Nothnagel, Axel; Perosanz, Felix; Rietbroek, Roelof; Rothacher, Markus; Schuh, Harald; Sert, Hakan; Sosnica, Krzysztof; Testani, Paride; Ventura-Traveset, Javier; Wautelet, Gilles; Zajdel, Radoslaw (Heidelberg : Springer, 2023)
    Improving and homogenizing time and space reference systems on Earth and, more specifically, realizing the Terrestrial Reference Frame (TRF) with an accuracy of 1 mm and a long-term stability of 0.1 mm/year are relevant ...
  • 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 ...
  • Konzept und Analyse von Codephasenvatiationen für Multi-GNSS-Signale 
    Breva, Yannick; Kröger, Johannes; Kersten, Tobias; Schöne, Steffen (Stuttgart : Frontiers of Geodetic Science, 2019-09-19)
    Für hochpräzise GNSS-Anwendungen sind Trägerphasenmessungen unabdingbar. Bei solchen Messungen ist es notwendig die individuellen Antennenphasenzentrumskorrekturen (PCC) zu berücksichtigen. Ähnliche Korrekturen existieren ...
  • A low-power, low-noise 37-MHz photoreceiver for intersatellite laser interferometers using discrete heterojunction bipolar transistors 
    Barranco, German Fernandez; Sheard, Benjamin S.; Dahl, Christian; Mathis, Wolfgang; Heinzel, Gerhard (Piscataway, NJ : Institute of Electrical and Electronics Engineers Inc., 2018)
    Intersatellite laser interferometers feature quadrant photoreceivers to produce electrical signals from the interfered optical beams. In the particular case of LISA, the expected optical AC beat note has an amplitude of ...
  • Mobile quantum gravity sensor with unprecedented stability 
    Freier, C.; Hauth ,M.; Schkolnik, V.; Leykauf, B.; Schilling, Manuel; Wziontek, H.; Scherneck, H.-G.; Müller, J.; Peters, A. (Bristol : Institute of Physics Publishing, 2016)
    Changes of surface gravity on Earth are of great interest in geodesy, earth sciences and natural resource exploration. They are indicative of Earth system's mass redistributions and vertical surface motion, and are usually ...
  • On Adequate Comparison of Antenna Phase Center Variations 
    Schön, Steffen; Kersten, Tobias (Washington D.C. : American Geophysical Union, 2013)
    One important part for ensuring the high quality of the International GNSS Service's (IGS) products is the collection and publication of receiver - and satellite antenna phase center variations (PCV). The PCV are crucial ...
  • Phase Center Corrections for new GNSS-Signals 
    Kröger, Johannes; Breva, Yannick; Kersten, Tobias; Schön, Steffen (2019-04-09)
    Phase center corrections (including corrections for phase center offset and phase center variations) are nowadays mandatory for high accuracy GNSS applications. Currently, only L1- and L2 frequencies for GPS and GLONASS ...
  • The Atmospheric Scale Lengths of Turbulence and Its Dependencies Derived from GPS Single Difference with a Common Clock 
    Kermarrec, Gaël; Schön, Steffen (Washington, DC : American Geophysical Union, 2021)
    Microwave signals, for example, those from Global Navigation Satellite Systems (GNSS) and very long baseline interferometry, are affected by tropospheric turbulence in such a way that the random fluctuations of the atmospheric ...
  • Validation of Phase Center Corrections for new GNSS-Signals obtained with absolute antenna calibration in the field 
    Breva, Yannick; Kröger, Johannes; Kersten, Tobias; Schön, Steffen (2019-04-09)
    For high accuracy GNSS applications it is necessary to take phase center corrections (PCC) into account. At the moment PCC from chamber calibrations for various signals are available, however GPS L5 as well as Galileo PCC ...