Auflistung Fakultät für Bauingenieurwesen und Geodäsie nach Autor/in "c1be2867-5dcd-406b-b742-5b2b3df6b3c6"

Auflistung Fakultät für Bauingenieurwesen und Geodäsie nach Autor/in "c1be2867-5dcd-406b-b742-5b2b3df6b3c6"

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  • 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 ...
  • Evaluation and modeling of the fatigue damage behavior of polymer composites at reversed cyclic loading 
    Koch, Igor; Just, Gordon; Brod, Martin; Chen, Jiuheng; Doblies, Audrius; Dean, Aamir; Gude, Maik; Rolfes, Raimund; Hopmann, Christian; Fiedler, Bodo (Basel : MDPI AG, 2019)
    Understanding the composite damage formation process and its impact on mechanical properties is a key step towards further improvement of material and higher use. For its accelerated application, furthermore, practice-related ...
  • 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 ...
  • 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 ...
  • 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
  • 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. ...
  • Signals of Geophysical Nature in GRACE and GRACE-FO Post-Fit Range-Rate Residuals 
    Koch, Igor; Duwe, Mathias; Flury, Jakob; Fletling, Nina (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023)
    Post-fit residuals of satellite-to-satellite tracking measurements of the GRACE and GRACE-FO missions obtained after a common estimation of orbit and gravity field parameters should ideally contain measurement noise with ...
  • Spectral analysis of residual GRACE and GRACE-FO range accelerations 
    Koch, Igor; Duwe, Mathias; Flury, Jakob (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2023)
    GRACE and GRACE-FO K-band range-rate post-fit residuals obtained after a common estimation of monthly gravity field coefficients and ancillary satellite parameters represent a complex superposition of different effects. ...

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