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Vinkovi, K. (author), Andersen, T. (author), de Vries, M. (author), Kers, B. (author), van Heuven, S. (author), Peters, W. (author), Hensen, A. (author), van den Bulk, P. (author), Chen, H. (author)Enteric fermentation and manure methane emissions from livestock are major anthropogenic greenhouse gas emis sions. In general, direct measurements of farm-scale methane emissions are scarce due to the source complexity and the limitations of existing atmospheric sampling methods. Using an innovative UAV-based active AirCore system, we have...article 2022
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Steen, M. (author), van Diggelen, J. (author), Timan, T. (author), van der Stap, N. (author)A human-centric approach to the design and deployment of AI systems aims to support and augment human capabilities. This sounds worthwhile indeed. But what could this look like in a military context? We explored a human-centric approach to the design and deployment of highly autonomous, unarmed Unmanned Aerial Vehicle (UAV), or drone, and an...article 2022
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Boehrer, N. (author), Gabriel, A. (author), Brandt, A. (author), Uijens, W.R. (author), Kampmeijer, L. (author), van der Stap, N. (author), Schutte, K. (author)With the latest advances in image sensor technology, cameras are able to generate video with tens of megapixels per frame. These high resolution videos streams offer great potential to be used in the surveillance domain. For ground based systems, gigapixel streams are already used with great effect as illustrated by the ICME 2019 crowd counting...conference paper 2020
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Hildmann, H. (author), Kovacs, E. (author)The use of UAVs in areas ranging from agriculture over urban services to entertainment or simply as a hobby has rapidly grown over the last years. Regarding serious/commercial applications, UAVs have been considered in the literature, especially as mobile sensing/actuation platforms (i.e., as a delivery platform for an increasingly wide range of...article 2019
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Beckers, A.L.D. (author), Sijs, J. (author), van Diggelen, J. (author), van Dijk, Roelof J.E. (author), Bouma, H. (author), Lomme, M. (author), Hommes, R.M. (author), Hillerström, F.H.J. (author), van der Waa, J.S. (author), van Velsen, A.L. (author), Mannucci, T. (author), Voogd, J.M. (author), van Staal, W. (author), Veltman, H.J. (author), Wessels, P.W. (author), Huizing, A. (author)Intelligent robotic autonomous systems (unmanned aerial/ground/surface/underwater vehicles) are attractive for military application to relieve humans from tedious or dangerous tasks. These systems require awareness of the environment and their own performance to reach a mission goal. This awareness enables them to adapt their operations to...conference paper 2019
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Otten, M.P.G. (author), Maas, A.P.M. (author), Bolt, R.J. (author), Caro-Cuenca, M. (author), Medenblik, H. (author)This paper presents a new multifunction radar that was specially designed for mini-UAV platforms. The multi-channel radar is omnidirectional, allowing great flexibility in radar- and flight operations. A demonstrator has been built, weighing 800 grams, and consuming 25 W. Flexible SAR, GMTI and novel sensing modes can be demonstrated with this...conference paper 2018
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van Leeuwen, C.J. (author), van Huis, J.R. (author), Baan, J. (author)Wide Area Motion Imagery (WAMI) enables image based surveillance of areas that can cover multiple square kilometers. Interpreting and analyzing information from such sources, becomes increasingly time consuming as more data is added from newly developed methods for information extraction. Captured from a moving Unmanned Aerial Vehicle (UAV), the...conference paper 2016
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Schleijpen, R. (author), Voogt, V. (author), Zwamborn, P. (author), van den Oever, J. (author)This paper presents experimental work on the detection of spurious RF emissions of mini Unmanned Aerial Vehicles (mini-UAV). Many recent events have shown that mini-UAVs can be considered as a potential threat for civil security. For this reason the detection of mini-UAVs has become of interest to the sensor community. The detection,...conference paper 2016
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Harmanny, R.L.A. (author), Prémel-Cabic, G. (author), Wit, J.J.M. (author)The radar micro-Doppler signature of a target depends on its micro-motion, i.e., the motion of parts of a target relative to the motion of the target as a whole. These micro-motions are very characteristic considering different target classes, e.g., the slow pendulum-like motion of a bird’s wings versus the rapidly rotating propellers of a small...article 2015
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Harmanny, R.I.A. (author), de Wit, J.J.M. (author), Prémel-Cabic, G. (author)The radar micro-Doppler signature of a target is determined by parts of the target moving or rotating in addition to the main body motion. The relative motion of these parts is characteristic for different classes of targets, e.g. the flapping motion of a bird’s wings versus the spinning of propeller blades. In the present study, the micro...article 2015
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van Eekeren, A.W.M. (author), van Huis, J.R. (author), Eendebak, P.T. (author), Baan, J. (author)Airborne platforms, such as UAV's, with Wide Area Motion Imagery (WAMI) sensors can cover multiple square kilometers and produce large amounts of video data. Analyzing all data for information need purposes becomes increasingly labor-intensive for an image analyst. Furthermore, the capacity of the datalink in operational areas may be inadequate...conference paper 2015
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Molchanov, P. (author), Harmanny, R.I.A. (author), de Wit, J.J.M. (author), Egiazarian, K. (author), Astola, J. (author)The popularity of small unmanned aerial vehicles (UAVs) is increasing. Therefore, the importance of security systems able to detect and classify them is increasing as well. In this paper, we propose a new approach for UAVs classification using continuous wave radar or high pulse repetition frequency (PRF) pulse radars. We consider all steps of...article 2014
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Evers, L. (author), Dollevoet, T. (author), Barros, A.I. (author), Monsuur, H. (author)Unmanned Aerial Vehicles (UAVs) can provide significant contributions to information gathering in military missions. UAVs can be used to capture both full motion video and still imagery of specific target locations within the area of interest. In order to improve the effectiveness of a reconnaissance mission, it is important to visit the largest...article 2014
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Evers, L. (author), Barros, A.I. (author), Monsuur, H. (author), Wagelmans, A. (author)In this paper we simultaneously consider three extensions to the standard Orienteering Problem (OP) to model characteristics that are of practical relevance in planning reconnaissance missions of Unmanned Aerial Vehicles (UAVs). First, travel and recording times are uncertain. Secondly, the information about each target can only be obtained...article 2014
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Weimar, P.W.L. (author), Kerkkamp, J.S.F. (author), Wiel, R.A.N. (author), Meiller, P.P. (author), Bos, J.G.H. (author)With this book TNO provides an overview of topics related to Miniature Unmanned Aerial Vehicles (MUAVs). Both novices and experts may find this publication valuable. The Netherlands Organisation for Applied Scientific Research TNO conducts research on UAVs and MUAVs, see for example [1], on the basis of which this book was written.book 2014
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Harmanny, R.I.A. (author), de Wit, J.J.M. (author), Prémel Cabic, G. (author)The radar micro-Doppler signature of a target is determined by parts of the target moving or rotating in addition to the main body motion. The relative motion of parts is characteristic for different classes of targets, e.g. the flapping motion of a bird's wings vs. the spinning of propeller blades. In the present study, the micro-Doppler...conference paper 2014
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Evers, L. (author), Barros, A.I. (author), Monsuur, H. (author), Wagelmans, A.P.M. (author)Unmanned Aerial Vehicles (UAVs) have become an essential asset for military and law enforcement operations. In particular their use for surveillance and reconnaissance tasks has been growing due to the quick developments in the areal systems themselves, sensor technology, and image processing techniques that enable near-realtime acquisition of...bookPart 2014
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Otten, M.P.G. (author), van Rossum, W.L. (author), van der Graaf, M.W. (author), Vlothuizen, W.J. (author), Tan, R.G. (author)An X-band Digital Array Synthetic Aperture Radar for a Short Range Tactical UAV is presented. The Frequency Modulated Continuous Wave radar principle in combination with digital beam forming over 24 receive channels is used to achieve low power and advanced imaging SAR capabilities on small platform. Novel SAR imaging modes are discussed, and...conference paper 2014
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de Wit, J.J.M. (author), Harmanny, R.I.A. (author), Molchanov, P. (author)Abstract—The micro-Doppler spectrogram depends on parts of a target moving and rotating in addition to the main body motion (e.g., spinning rotor blades) and is thus characteristic for the type of target. In this study, the micro-Doppler spectrogram is exploited to distinguish between birds and small unmanned aerial vehicles (UAVs). The focus...conference paper 2014
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van Vossen, R. (author), Giodini, S. (author), Hunter, A.J. (author), Beckers, A.L.D. (author), Williams, D.F. (author)The effectiveness and efficiency of mine-hunting operations with autonomous underwater vehicles (AUVs) are greatly influenced by environmental conditions, such as seabed, turbidity, currents, and tides. Therefore accurate environmental information is needed for the planning and evaluation of mine-hunting operations. Because environmental...conference paper 2013