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Hladczuk, N.A. (author), van den IJssel, J.A.A. (author), Kodikara, T. (author), Siemes, C. (author), Visser, P.N.A.M. (author)Uncertainties in radiation pressure modelling play a significant role in the thermospheric density and crosswind observations derived from the GRACE-FO accelerometer, especially during low solar activity. Under such conditions, the radiation pressure acceleration matches the magnitude of the aerodynamic acceleration along the track and...journal article 2024
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Altiparmaki, O. (author), Amraoui, Samira (author), Kleinherenbrink, M. (author), Moreau, Thomas (author), Maraldi, Claire (author), Visser, P.N.A.M. (author), Naeije, M.C. (author)This study presents the first azimuth cutoff analysis in Synthetic Aperture Radar (SAR) altimetry, aiming to assess its applicability in characterizing sea-state dynamics. In SAR imaging, the azimuth cutoff serves as a proxy for the shortest waves, in terms of wavelength, that can be detected by the satellite under certain wind and wave...journal article 2024
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Siemes, C. (author), van den IJssel, J.A.A. (author), Visser, P.N.A.M. (author)Thermosphere mass density and crosswind can be derived from accelerometer and GNSS tracking data. However, present datasets are often provided without comprehensive uncertainty specifications. We present a newly developed method that propagates measurement noise and errors in the satellite specification, thermosphere models, and radiation flux...journal article 2024
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Schrama, Ernst (author), Visser, P.N.A.M. (author)In this paper we review the precision orbit determination (POD) performance of the CryoSat-2 mission where we used all tracking data between June-2010 and Jan-2023; with station and beacon coordinates provided in the ITRF2020 reference system, we use a mean gravity model, and we use spacecraft specific models for modeling drag and radiation...journal article 2023
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Naeije, M.C. (author), Di Bella, Alessandro (author), Geminale, Teresa (author), Visser, P.N.A.M. (author)ESA’s Earth explorer mission CryoSat-2 has an ice-monitoring objective, but it has proven to also be a valuable source of observations for measuring impacts of climate change over oceans. In this paper, we report on our long-term ocean data analysis and validation and give our final words on CryoSat-2’s Geophysical Ocean Products (GOP)...journal article 2023
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Gurvits, L. (author), Cimò, Giuseppe (author), Dirkx, D. (author), Pallichadath, V. (author), Altobelli, Nicolas (author), Bocanegra Bahamon, T.M. (author), Cazaux, S.M. (author), Vermeersen, L.L.A. (author), Visser, P.N.A.M. (author)Planetary Radio Interferometry and Doppler Experiment (PRIDE) is a multi-purpose experimental technique aimed at enhancing the science return of planetary missions. The technique exploits the science payload and spacecraft service systems without requiring a dedicated onboard instrumentation or imposing on the existing instrumentation any...review 2023
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Casini, S. (author), Cervone, A. (author), Monna, G.L.E. (author), Visser, P.N.A.M. (author)This paper aims to investigate the capabilities of exploiting optical line-of-sight navigation using star trackers. First, a synthetic image simulator is developed to generate realistic images, which is later exploited to test the star tracker's performance. Then, generic considerations regarding attitude estimation are drawn, highlighting...journal article 2023
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Casini, S. (author), Turan, E. (author), Cervone, A. (author), Monna, Bert (author), Visser, P.N.A.M. (author)This manuscript aims to present and evaluate the applicability of combining optical line-of-sight (LoS) navigation with crosslink radiometric navigation for deep-space cruising distributed space systems. To do so, a set of four distributed space systems architectures is presented, and for each of those, the applicability of the combination is...journal article 2023
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Sarris, Theodore E. (author), Tourgaidis, Stelios (author), Pirnaris, Panagiotis (author), Baloukidis, Dimitris (author), Papadakis, Konstantinos (author), Doornbos, Eelco (author), Siemes, C. (author), Visser, P.N.A.M. (author), van den IJssel, J.A.A. (author)Daedalus MASE (Mission Assessment through Simulation Exercise) is an open-source package of scientific analysis tools aimed at research in the Lower Thermosphere-Ionosphere (LTI). It was created with the purpose to assess the performance and demonstrate closure of the mission objectives of Daedalus, a mission concept targeting to perform in...journal article 2023
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Siemes, C. (author), Borries, Claudia (author), Bruinsma, S. (author), Fernandez-Gomez, I. (author), Hladczuk, N.A. (author), van den IJssel, J.A.A. (author), Kodikara, T. (author), Vielberg, K. (author), Visser, P.N.A.M. (author)We present new neutral mass density and crosswind observations for the CHAMP, GRACE, and GRACE-FO missions, filling the last gaps in our database of accelerometer-derived thermosphere observations. For consistency, we processed the data over the entire lifetime of these missions, noting that the results for GRACE in 2011- 2017 and GRACE-FO...journal article 2023
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Altiparmaki, O. (author), Kleinherenbrink, M. (author), Naeije, M.C. (author), Slobbe, D.C. (author), Visser, P.N.A.M. (author)This article shows the first spectral analysis of fully-focused Synthetic Aperture Radar (FFSAR) altimetry data with the objective of studying backscatter modulations caused by swells. Swell waves distort the backscatter in altimetry radargrams by means of velocity and range bunching. These swell signatures are visible in the tail of the...journal article 2022
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Carzana, L. (author), Visser, P.N.A.M. (author), Heiligers, M.J. (author)Solar sailing is a propellantless propulsion method that takes advantage of solar<br/>radiation pressure to generate thrust. The last decades have seen the launch of<br/>several solar-sail missions to demonstrate the technology’s potential for space<br/>exploration and exploitation. Even more missions are scheduled for launch in<br/>the near...conference paper 2022
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De Breuker, R. (author), Benedictus, R. (author), Bisagni, C. (author), Boneschansker, I. (author), Melkert, J.A. (author), Snellen, M. (author), Veldhuis, L.L.M. (author), Verdegaal, F.M. (author), Visser, P.N.A.M. (author), Werij, H.G.C. (author)The Faculty of Aerospace Engineering is one of eight faculties at Delft University of Technology. It is one of the most comprehensive academic and innovation communities worldwide focusing on aerospace engineering. Its 120 professors and 70 researchers are mentoring and teaching around 2,800 BSc/MSc students and more than 350 PhD candidates...journal article 2022
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Siemes, C. (author), Maddox, Stephen (author), Carraz, Olivier (author), Cross, Trevor (author), George, Steven (author), van den IJssel, J.A.A. (author), Kiss-Toth, Marton (author), Pastena, Massimiliano (author), Visser, P.N.A.M. (author)Cold Atom technology has undergone rapid development in recent years and has been demonstrated in space in the form of cold atom scientific experiments and technology demonstrators, but has so far not been used as the fundamental sensor technology in a science mission. The European Space Agency therefore funded a 7-month project to define the...journal article 2022
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Touboul, Pierre (author), Métris, Gilles (author), Rodrigues, Manuel (author), Bergé, Joel (author), Robert, Alain (author), Baghi, Quentin (author), André, Yves (author), Bedouet, Judicael (author), Visser, P.N.A.M. (author)The space mission MICROSCOPE dedicated to the test of the equivalence principle (EP) operated from April 25, 2016 until the deactivation of the satellite on October 16, 2018. In this analysis we compare the free-fall accelerations (a <sub>A</sub> and a <sub>B</sub>) of two test masses in terms of the Eötvös parameter η ( A,B ) = 2 a A − a B a...journal article 2022
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Carzana, L. (author), Visser, P.N.A.M. (author), Heiligers, M.J. (author)Solar sailing is a spacecraft propulsion method relying solely on solar radiation pressure to provide thrust and is therefore propellantless by nature. Although it represents a practical and promising propulsion system particularly suited for heliocentric flight regimes, the majority of sailcraft missions flown to date have remained Earth...journal article 2022
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Gurvits, L. (author), Falcke, Heino (author), Frey, Sándor (author), Fromm, Christian M. (author), García-Miró, Cristina (author), Janssen, Michael (author), Masania, K. (author), Rajan, R.T. (author), Visser, P.N.A.M. (author)Ultra-high angular resolution in astronomy has always been an important vehicle for making fundamental discoveries. Recent results in direct imaging of the vicinity of the supermassive black hole in the nucleus of the radio galaxy M87 by the millimeter VLBI system Event Horizon Telescope and various pioneering results of the Space VLBI...journal article 2022
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Touboul, Pierre (author), Métris, Gilles (author), Rodrigues, Manuel (author), Bergé, Joel (author), Robert, Alain (author), Baghi, Quentin (author), André, Yves (author), Bedouet, Judicaël (author), Visser, P.N.A.M. (author)The MICROSCOPE mission was designed to test the weak equivalence principle (WEP), stating the equality between the inertial and the gravitational masses, with a precision of 10-15 in terms of the Eötvös ratio η. Its experimental test consisted of comparing the accelerations undergone by two collocated test masses of different compositions as...journal article 2022
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Simons, W.J.F. (author), Broerse, D.B.T. (author), Kleptsova, O.S. (author), Nijholt, N. (author), Pietrzak, J.D. (author), Naeije, M.C. (author), Lhermitte, S.L.M. (author), Visser, P.N.A.M. (author), Riva, R.E.M. (author)A devastating tsunami struck Palu Bay in the wake of the 28 September 2018 M<sub>w</sub> = 7.5 Palu earthquake (Sulawesi, Indonesia). With a predominantly strike-slip mechanism, the question remains whether this unexpected tsunami was generated by the earthquake itself, or rather by earthquake-induced landslides. In this study we examine the...journal article 2022
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- Tseng, Tzu Pang (author), Visser, P.N.A.M. (author) contribution to periodical 2022