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Visser, T. (author)
The decay of satellite orbits has been used extensively to obtain thermospheric density measurements. With the introduction of accelerometers in spacecraft, the spatial resolution of these data could be increased. At the same time, the direction of the measured acceleration provides a measure for the direction of the incoming flow, and therefore...
doctoral thesis 2019
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Maltha, Rutger (author)
Given the difficulty that is normally associated with tuning highly nonlinear control systems, such as seen in LEO spacecraft, it is interesting to evaluate how new controller types perform. The measured data from the GOCE mission has led to the creation of high fidelity torque models describing the angular perturbations acting on a spacecraft....
master thesis 2018
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Visser, P.N.A.M. (author)
A method for validating the calibration parameters of the six accelerometers on board the Gravity field and steady-state Ocean Circulation Explorer (GOCE) from star tracker observations that was originally tested by an end-to-end simulation, has been updated and applied to real data from GOCE. It is shown that the method provides estimates of...
journal article 2017
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Guo, X. (author), Ditmar, P.G. (author), Zhao, Q (author), Klees, R. (author), Farahani, H. (author)
GPS data collected by satellite gravity missions can be used for extracting the long-wavelength part of the Earth’s gravity field. We propose a new data processing method which makes use of the ‘average acceleration’ approach to gravity field modelling. In this method, satellite accelerations are directly derived from GPS carrier phase...
journal article 2017
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Belt, P. (author)
The retrieval of vertical winds by using acceleration data of satellites has never been done before and therefore the results will be unique. Two different methods can be developed for the retrieval of these winds. The first one is a two-dimensional approach and the second one uses the three-dimensional space. From the results for the vertical...
master thesis 2016
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Fuchs, Martin Johann (author), Hooper, Andrew (author), Broerse, D.B.T. (author), Bouman, Johannes (author)
The Gravity Recovery and Climate Experiment (GRACE) mission (launched 2002) and the Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) mission (March 2009 to November 2013) collected spaceborne gravity data for the preseismic and postseismic periods of the 2011 Tohoku-Oki earthquake. In addition, the dense Japan GeoNet Global...
journal article 2016
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Visser, P.N.A.M. (author), Van den IJssel, J.A.A. (author)
The European Space Agency Gravity field and steady-state Ocean Circular Explorer (GOCE) carries a gradiometer consisting of three pairs of accelerometers in an orthogonal triad. Precise GOCE science orbit solutions (PSO), which are based on satellite-to-satellite tracking observations by the Global Positioning System and which are claimed to be...
journal article 2014
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Zhang, J.T. (author), Forbes, J.M. (author), Zhang, C.H. (author), Doornbos, E.N. (author), Bruinsma, S.L. (author)
As the utilization of low-Earth orbit increases, so does the need for improved ephemeris predictions and thus more accurate density models. In this paper we quantify the density variability of the thermosphere attributable to the lunar gravitational tide, a potentially predictable component of variability not included in any operational density...
journal article 2014
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Häusler, K. (author), Hagan, M.E. (author), Baumgaertner, A.J.G. (author), Maute, A. (author), Lu, G. (author), Doornbos, E.N. (author), Bruinsma, S. (author), Forbes, J.M. (author), Gasperini, F. (author)
We report on a new source of tidal variability in the National Center for Atmospheric Research thermosphere-ionosphere-mesosphere-electrodynamics general circulation model (TIME-GCM). Lower boundary forcing of the TIME-GCM for a simulation of November–December 2009 based on 3-hourly Modern-Era Retrospective Analysis for Research and Application ...
journal article 2014
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Fuchs, M.J. (author), Bouman, J. (author), Broerse, D.B.T. (author), Visser, P.N.A.M. (author), Vermeersen, L.L.A. (author)
The Japan Tohoku-Oki earthquake (9.0 Mw) of 11 March 2011 has left signatures in the Earth's gravity field that are detectable by data of the Gravity field Recovery and Climate Experiment (GRACE) mission. Because the European Space Agency's (ESA) satellite gravity mission Gravity field and steady-state Ocean Circulation Explorer (GOCE)—launched...
journal article 2013
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Garcia, R.F. (author), Bruinsma, S. (author), Lognonné, P. (author), Doornbos, E.N. (author), Cachoux, F. (author)
The first in situ sounding of a post-seismic infrasound wavefront is presented, using data from the GOCE mission. The atmospheric infrasounds following the great Tohoku earthquake (on 11 March 2011) induce variations of air density and vertical acceleration of the GOCE platform. These signals are detected at two positions along the GOCE orbit...
journal article 2013
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Gruber, T. (author), Visser, P.N.A.M. (author), Ackermann, C. (author), Hosse, M. (author)
Three GOCE-based gravity field solutions have been computed by ESA’s high-level processing facility and were released to the user community. All models are accompanied by variance-covariance information resulting either from the least squares procedure or a Monte-Carlo approach. In order to obtain independent external quality parameters and to...
journal article 2011
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Bock, H. (author), Jäggi, A. (author), Meyer, U. (author), Visser, P.N.A.M. (author), Van den IJssel, J.A.A. (author), Van Helleputte, T. (author), Heinze, M. (author), Hugentobler, U. (author)
The first ESA (European Space Agency) Earth explorer core mission GOCE (Gravity field and steady-state Ocean Circulation Explorer) was launched on 17 March 2009 into a sun-synchronous dusk–dawn orbit with an exceptionally low initial altitude of about 280 km. The onboard 12-channel dual-frequency GPS (Global Positioning System) receiver delivers...
journal article 2011
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Broerse, D.B.T. (author), Visser, P.N.A.M. (author), Bouman, J. (author), Fuchs, M. (author), Vermeersen, L.L.A. (author), Schmidt, M. (author)
Large earthquakes do not only heavily deform the crust in the vicinity of the fault, they also change the gravity field of the area affected by the earthquake due to mass redistribution in the upper layers of the Earth. Besides that, for sub-oceanic earthquakes deformation of the ocean floor causes relative sea-level changes and mass...
conference paper 2011
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Van den IJssel, J.A.A. (author), Visser, P.N.A.M. (author), Doornbos, E.N. (author), Meyer, U. (author), Bock, H. (author), Jäggi, A. (author)
The state-of-the-art GOCE Satellite-to-Satellite Tracking Instrument (SSTI) delivers high-quality GPS data with an almost continuous 1 Hz data rate, which allows for very Precise Orbit Determination (POD). Despite this good performance, the GPS receiver shows occasional unexpected L2 tracking losses, which mainly occur close to the geomagnetic...
conference paper 2011
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Bouman, J. (author), Fiorot, S. (author), Fuchs, M. (author), Gruber, T. (author), Schrama, E.J.O. (author), Tscherning, C. (author), Veicherts, M. (author), Visser, P.N.A.M. (author)
GOCE is ESA’s gravity field mission and the first satellite ever that measures gravitational gradients in space, that is, the second spatial derivatives of the Earth’s gravitational potential. The goal is to determine the Earth’s mean gravitational field with unprecedented accuracy at spatial resolutions down to 100 km. GOCE carries a gravity...
journal article 2011
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Bouman, J. (author), Rispens, S. (author), Gruber, T. (author), Koop, R. (author), Schrama, E. (author), Visser, P. (author), Tscherning, C.C. (author), Veicherts, M. (author)
One of the products derived from the gravity field and steady-state ocean circulation explorer (GOCE) observations are the gravity gradients. These gravity gradients are provided in the gradiometer reference frame (GRF) and are calibrated in-flight using satellite shaking and star sensor data. To use these gravity gradients for application in...
journal article 2008
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Visser, P.N.A.M. (author)
A method has been implemented and tested for estimating bias and scale factor parameters for all six individual accelerometers that will fly on-board of GOCE and together form the so-called gradiometer. The method is based on inclusion of the individual accelerometer observations in precise orbit determinations, opposed to the baseline method...
journal article 2008
document
Visser, P.N.A.M. (author)
A method has been developed and tested for estimating calibration parameters for the six accelerometers on board the Gravity field and steady-state Ocean Circulation Explorer (GOCE) from star tracker observations. These six accelerometers are part of the gradiometer, which is the prime instrument on board GOCE. It will be shown that by taking...
journal article 2008
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Han, S.C. (author), Ditmar, P. (author)
A spatiospectral localization method is discussed for processing the global geopotential coefficients from satellite mission data to investigate time-variable gravity. The time-variable mass variation signal usually appears associated with a particular geographical area yielding inherently regional structure, while the dependence of the...
journal article 2007
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