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Moon, S.G. (author), Hannemann, S. (author), Collon, M. (author), Wielinga, K. (author), Kroesbergen, E. (author), Harris, J. (author), Gill, E.K.A. (author), Maessen, D.C. (author)In the following we review the optimization for microsatellite deployment of a highly integrated payload suite comprising a high resolution camera, an additional camera for stereoscopic imaging, and a single photon counting laser altimeter. This payload suite, the `Stereo Imaging Laser Altimeter' SILAT has been designated for deployment aboard...conference paper 2009
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Gill, E.K.A. (author), Maessen, D. (author), Laan, E. (author), Zheng, G.T. (author)Large current uncertainties in the characteristics of aerosols in the Earth’s atmosphere preclude meaningful climate model evaluation. The FAST mission will contribute to the characterization of aerosols and their relation to climate change through a synoptic evaluation of local, regional and global aerosol data and altitude profiles of the...conference paper 2008
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Bone, M. (author), Cloutier, R.L. (author), Gill, E.K.A. (author), Verma, D. (author)There is increased recognition of the role of systems engineering in reducing the risk (technical, cost, and schedule) on complex space systems development and integration projects. A number of international systems engineering standards have been published in the last five years (ISO 15288, IEEE 1220, and EIA 632). Closer to the space domain,...conference paper 2009
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Giuditta, N. (author), Gill, E.K.A. (author), Fernández, B. (author), Isaac, D. (author)New network technologies are providing interconnectivity in areas previously unheard of. One of these novel technologies, named Disruption Tolerant Networking (DTN), shows promise for the space industry. In order to study its suitability for University projects, a model of a University space mission has been created using network simulation...conference paper 2009
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Heusdens, R. (author), Engelen, S. (author), Buist, P.J. (author), Noroozi, A. (author), Sundaramoorthy, P.P. (author), Verhoeven, C.J.M. (author), Bentum, M. (author), Gill, E.K.A. (author)Pulsars with their periodic pulses and known positions are ideal beacons for navigation. The challenge, however, is the detection of the very weak pulsar signals that are submerged in noise. Radio based approaches allow the use of advanced techniques and methods for the detection and acquisition of such weak signals. In this paper, an effective...conference paper 2012
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Gill, E.K.A. (author), Kreisl, J. (author), Verma, D. (author)Successful education of engineers needs continuous adaptation to track the changing needs of industry. The adaptation is not limited to technological advance or to the changing mentality of new students but also to end-to-end engineering approaches using Systems Engineering. However, industries today require more and more engineers with profound...conference paper 2009
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Kestilä, A.A. (author), Engelen, S. (author), Gill, E.K.A. (author), Verhoeven, C.J.M. (author), Bentum, M.J. (author), Irahhauten, Z. (author)Interstellar navigation poses significant challenges in all aspects of a spacecraft. One of them is reliable, low-cost, real-time navigation, especially when there is a considerable distance between Earth and the spacecraft in question. In this paper, a complete system for navigation using pulsar radio emissions is described and analysed. The...conference paper 2010
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Sundaramoorthy, P.P. (author), Gill, E. (author), Verhoeven, C.J.M. (author)Embracing reduced requirements and leveraging commercial technology has led to a fast growing small satellite industry. Although most interest in small satellites has hovered around the micro satellites through to the picosatellites, academic interest now extends up to the sub 100 g range of satellites as well. Femto-satellites with a mass range...conference paper 2010
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Gill, E.K.A. (author), Helderweirt, A. (author)Low Earth Orbit (LEO) satellites have a limited direct contact time with the stations of their ground segment. This fundamentally constraints a timeliness reaction of the mission control center in case of emergency situations onboard the LEO spacecraft. To enable such a rapid reaction to emergency situations onboard LEO satellites, it is...conference paper 2010
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Bouwmeester, J. (author), Gill, E.K.A. (author), Verhoeven, C.J.M. (author)The Delfi Program aims to launch a nano-satellite every 2.5 years with the objectives to give the best education for space engineering, to test and qualify novel space technology and to enhance the nanosatellite platform to open doors for new applications. With Delfi-C3 in orbit, Delfi-n3Xt in development for a launch in 2010 and preliminary...conference paper 2008
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Maessen, D.C. (author), Gunter, B.C. (author), Verhoeven, C.J.M. (author), Gill, E.K.A. (author)In 2007, the Tsinghua University, China, and the Delft University of Technology, The Netherlands, have agreed to jointly define, develop and operate the Formation for Atmospheric Science and Technology demonstration (FAST) mission. FAST will allow for a synoptic evaluation of global aerosol data and altitude profiles of the cryosphere with two...conference paper 2008
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Batenburg, P.A.W. (author), Gill, E.K.A. (author), Drijkoningen, G.G. (author), Toxopeus, G.J. (author)A study was performed to determine the feasibility of reflection seismology for planetary geology taking into account present-day technology advances. An approach based on end-user requirements was applied to assure the scientific usefulness of the results. Thirty applications of a seismic-reflection system for space applications were determined...conference paper 2010
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Gill, E.K.A. (author), Sundaramoorthy, P. (author), Bouwmeester, J. (author), Zandbergen, B. (author), Reinhard, R. (author)QB50 is a mission establishing an international network of 50 nano-satellites for multi-point, in-situ measurements in the lower thermosphere and re-entry research. As part of the QB50 mission, the Delft University of Technology intends to contribute two nano-satellites both being equipped with a highly miniaturized propulsion system in addition...conference paper 2010
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Sun, R. (author), Guo, J. (author), Gill, E.K.A. (author), Maessen, D. (author)Precise formation flying (PFF) missions require formation acquisition and maintenance through interactions among spacecraft by inter-satellite communication and relative navigation. That requires the network architecture to satisfy dedicated system constraints of time-criticality for updating navigation measurements and flexibility for...conference paper 2011
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Aas, C. (author), Zandbergen, B.T.C. (author), Hamann, R.J. (author), Gill, E.K.A. (author)A satellite design tool has been developed offering systems engineers a fast way to analyze the feasibility of a particular design concept. The tool differs from available tools on the market in that it is specifically targeted at small satellites in the mass range of 1-50 kg, and with a limited development time. The tool is developed in Excel,...conference paper 2009
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Sun, R. (author), Guo, J. (author), Gill, E.K.A. (author)Challenges and opportunities of wireless sensor networks (WSNs) in space applications are presented. The investigation of internet protocols, ad hoc routing and commercial-off-the-shelf (COTS) wireless communication protocols for efficient and reliable network design is addressed. In order to facilitate the analysis, several application...conference paper 2010
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- De Florio, S. (author), Gill, E.K.A. (author), D'Amico, S. (author), Grillenberger, A. (author) conference paper 2009
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Gill, E.K.A. (author), Lisi, M. (author), Bousquet, M. (author), Larson, W.J. (author)The space sector needs highly trained personnel. This calls for a continuous learning process comprising post-graduate educational programs. However, the offered programs differ substantially in scope and characteristics, coverage and focus, quality and organization and lack inter-program coordination. To remedy this, a Virtual Space Academy has...conference paper 2008
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Carrasco-Martos, S. (author), López-Risueño, G. (author), Jiménez-Baños, D. (author), Gill, E.K.A. (author)Global Navigation Satellite System (GNSS) positioning has turned out to be an enabler of Location-Based Services (LBS). This has motivated in recent years an increasing research activity on signal processing techniques for GNSS receivers. However, one main limitation faced by these GNSS receivers is the propagation of GNSS signals in complex...conference paper 2010
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Engelen, S. (author), Gill, E.K.A. (author), Verhoeven, C.J.M. (author)Satellite swarms, consisting of a large number of identical, miniaturized and simple satellites, are claimed to provide an implementation for specific space missions which require high reliability. However, a consistent model of how reliability and availability on mission level is linked to cost- and time-effective design of the individual swarm...conference paper 2012