Auflistung Fakultät für Bauingenieurwesen und Geodäsie nach Autor/in "52359856-4744-47cf-a56c-b137c6ade1b3"

Auflistung Fakultät für Bauingenieurwesen und Geodäsie nach Autor/in "52359856-4744-47cf-a56c-b137c6ade1b3"

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  • Analyzing the Ionospheric Irregularities Caused by the September 2017 Geomagnetic Storm Using Ground-Based GNSS, Swarm, and FORMOSAT-3/COSMIC Data near the Equatorial Ionization Anomaly in East Africa 
    Atabati, Alireza; Jazireeyan, Iraj; Alizadeh, Mahdi; Pirooznia, Mahmood; Flury, Jakob; Schuh, Harald; Soja, Benedikt (Basel : MDPI, 2023)
    Geomagnetic storms are one of the leading causes of ionospheric irregularities, depending on their intensity. The 6–10 September 2017 geomagnetic storm, the most severe geomagnetic event of the year, resulted from an X9 ...
  • Antarctic Time-Variable Regional Gravity Field Model Derived from Satellite Line-of-Sight Gravity Differences and Spherical Cap Harmonic Analysis 
    Feizi, Mohsen; Raoofian Naeeni, Mehdi; Flury, Jakob (Basel : MDPI, 2023)
    This study focuses on the development of a time-variable regional geo-potential model for Antarctica using the spherical cap harmonic analysis (SCHA) basis functions. The model is derived from line-of-sight gravity difference ...
  • Calibration of GRACE Accelerometers Using Two Types of Reference Accelerations 
    Koch, Igor; Shabanloui, Akbar; Flury, Jakob (Cham : Springer, 2018)
    Two approaches for the calibration of GRACE (Gravity Recovery And Climate Experiment) accelerometers are revisited. In the first approach, surface forces acting on the satellite are considered to derive the reference ...
  • Earth’s Time-Variable Gravity from GRACE Follow-On K-Band Range-Rates and Pseudo-Observed Orbits 
    Koch, Igor; Duwe, Mathias; Flury, Jakob; Shabanloui, Akbar (Basel : MDPI, 2021)
    During its science phase from 2002–2017, the low-low satellite-to-satellite tracking mission Gravity Field Recovery And Climate Experiment (GRACE) provided an insight into Earth’s time-variable gravity (TVG). The unprecedented ...
  • GFR processing standards at IfE 
    Koch, Igor; Flury, Jakob; Shabanloui, Akbar (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019-01-14)
    In this presentation, we report on the gravity field recovery activities at IfE (Institut für Erdmessung). Processing standards adopted for the LUH-GRACE2018 monthly gravity field time series are presented. The LUH-GRACE2018 ...
  • 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 ...
  • GRACE and GRACE-FO processing at IfE/LUH 
    Koch, Igor; Flury, Jakob; Duwe, Mathias; Shabanloui, Akbar (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)
    Updates on gravity field recovery from GRACE and GRACE Follow-On data at IfE/LUH.
  • GRACE-FO monthly solutions using the GRACE-SIGMA software 
    Koch, Igor; Flury, Jakob; Shabanloui, Akbar (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)
    In this contribution we present gravity field monthly solutions from GRACE Follow-On (GRACE-FO) Level-1B sensor data. The monthly solutions are computed with the GRACE-SIGMA software developed at the Institute of Geodesy, ...
  • GRACE-FO processing at IfE/LUH 
    Koch, Igor; Duwe, Mathias; Flury, Jakob; Shabanloui, Akbar (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2021)
    Processing strategy of the LUH-GRACE-FO-2020 monthly gravity field time series is presented. The spectral noise, spatial noise and signal content of the time series (2018-06 - 2020-08) is evaluated.
  • IfE monthly gravity field solutions using the variational equations 
    Naeimi, Majid; Koch, Igor; Khami, Arman; Flury, Jakob (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018-04-13)
    In this contribution, we present the LUH-GRACE2018 monthly gravity field solutions from GRACE-KBR measurements, which produced at Institut für Erdmessung (IfE) at Leibniz University of Hannover. Our solutions, based on ...
  • The impact of regional meteorological network data on AOD1B products 
    Yan, Yihao; Shabanloui, Akbar; Flury, Jakob; Zhong, Ming; Xu, Houze (2018-04-04)
    The AOD1B products show the short-term variations of gravity field and are removed from satellite observations in the post-processing step known as de-aliasing. The meteorological networks play an important role in the ...
  • Influence of accelerometer parametrizations on GRACE post-fit residuals 
    Koch, Igor; Shabanloui, Akbar; Flury, Jakob (München : European Geosciences Union, 2019-04-07)
    Accelerometers onboard of satellites can be regarded as a key improvement in gravity field recovery. These instruments are located in the center of mass of the satellite and are precisely measuring non-gravitational forces ...
  • LUH-GRACE2018 
    Koch, Igor; Flury, Jakob; Naeimi, Majid; Shabanloui, Akbar (Berlin ; Heidelberg : Springer, 2020)
    In this contribution, we present the LUH-GRACE2018 time series of monthly gravity field solutions covering the period January 2003–March 2016. The solutions are obtained from GRACE K-Band Range Rate (KBRR) measurements as ...
  • LUH-GRACE2018: A new time series of monthly gravity field solutions from GRACE 
    Koch, Igor; Naeimi, Majid; Flury, Jakob; Shabanloui, Akbar (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018-10-09)
    In this contribution, we present a new time series of monthly gravity field solutions mainly obtained from GRACE K band range rate (KBRR) measurements. Our monthly solutions are computed using the in-house developed ...
  • LUH-GRACE2018: Neue Zeitreihe monatlicher GRACE-Lösungen 
    Koch, Igor; Naeimi, Majid; Flury, Jakob (2018-10-16)
    Dieser Beitrag beschäftigt sich mit einer neuen Zeitreihe monatlicher Schwerefeldlösungen aus GRACE KBRR-Beobachtungen. Diese monatlichen Lösungen wurden mittels eigener GRACE-SIGMA Software in zwei Prozessierunsschritten ...
  • Multiresolution wavelet analysis applied to GRACE range rate residuals 
    Behzadpour, Saniya; Mayer-Gürr, Torsten; Flury, Jakob; Klinger, Beate; Goswami, Sujata (Göttingen : Copernicus GmbH, 2019)
    For further improvements of gravity field models based on Gravity Recovery and Climate Experiment (GRACE) observations, it is necessary to identify the error sources within the recovery process. Observation residuals ...
  • Multiresolution wavelet analysis applied to GRACE range-rate residuals 
    Behzadpour, Saniya; Mayer-Gürr, Torsten; Flury, Jakob; Klinger, Beate; Goswami, Sujata (Göttingen : Copernicus, 2019-08-15)
    For further improvements of gravity field mod- els based on Gravity Recovery and Climate Experiment (GRACE) observations, it is necessary to identify the error sources within the recovery process. Observation residuals ...
  • Präzise Satellitenbahnmodellierung am Beispiel der neuen Swarm-Mission 
    Koch, Igor; Alpers, Peter; Bashi, Mahsa; Flury, Jakob; Kröhnert, Damian; Naeimi, Majid; Schilling, Manuel; Shabanloui, Akbar (2015-09-15)
    Präzise Satellitenbahnmodellierung am Beispiel der neuen SWARM-Mission
  • Relativistic geodesy 
    Flury, Jakob (Bristol : Institute of Physics Publishing, 2016)
    Quantum metrology enables new applications in geodesy, including relativistic geodesy. The recent progress in optical atomic clocks and in long-distance frequency transfer by optical fiber together pave the way for using ...
  • Residual ocean tide signal in GRACE(-FO) range-rate post-fit residuals 
    Koch, Igor; Duwe, Mathias; Flury, Jakob (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023-11-02)
    Ocean tide model imperfections are one of the major uncertainty factors in gravity field recovery. Unmodeled signal can alias into level-2 gravity field products and be interpreted as real signal, e.g. as ice mass loss. ...

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