Searched for: author%3A%22van+Rossum%2C+W.%22
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de Martin, L. (author), van Rossum, W. (author), Ribeiro, D. (author), Anitori, L. (author)
It is well known that noise-like waveforms have the inherent property of suppressing ambiguities due to their nonrepetitive nature, as opposed to the more classical linear frequency modulated (LFM) pulsed waveforms. This aperiodicity also improves the robustness against jammers, making these waveforms harder to detect and classify by an enemy....
article 2020
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van Rossum, W. (author), Anitori, L. (author)
In this article a novel waveform, Random SlowTime Code Division Multiple Access (ST-CDMA) for MIMO radar is presented and investigated. ST-CDMA means that the waveforms of the different transmitters are orthogonal per burst, while conventional CDMA implies orthogonal waveforms of the different transmitters per pulse. In particular, the Doppler...
conference paper 2018
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Deiana, D. (author), Nennie, F. (author), Boekema, R.B. (author), van Rossum, W. (author), Monni, S. (author)
N-path filters exploiting switched-series-R-C networks can realize high-Q blocking-tolerant band-pass filters. Moreover, their center frequency is flexibly programmable by a digital clock. Unfortunately, the time variant nature of these circuits also results in unwanted signal folding. This paper proves analytically that folding can be reduced...
conference paper 2017
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van Rossum, W. (author), Huizing, A. (author)
In a phased array radar which uses Multiple Input Multiple Output (MIMO) techniques, each (group of) element(s) transmits a different waveform. This extra degree of freedom in the design of a phased array radar potentially yields an advantage for improved suppression of sidelobe clutter and jamming. In this paper a Space-Time Block Coding (STBC)...
conference paper 2015
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Jacobs, S. (author), Bekers, D. (author), Monni, S. (author), Otten, M. (author), Van Rossum, W. (author), Gerini, G. (author), Germani, C. (author), Fortini, D. (author), Toso, G. (author)
This contribution addresses the problem of designing a sparse active array antenna for spaceborne SAR applications at Ka-band. The main driver for the design is limiting the recurring manufacturing costs associated to the number of active modules, while preserving main performance and insuring a certain level of industrial feasibility. A sparse...
conference paper 2015
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Belfiori, F. (author), van Rossum, W. (author), Hoogeboom, P. (author)
A coherent two-dimensional (2D) multiple signal classification (MUSIC) processing for the simultaneous estimation of angular and range target positions has been presented. A 2D spatial smoothing technique is also introduced to cope with the coherent behaviour of the received echoes, which may result in a rank deficiency of the signals covariance...
article 2014
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Vaddagiri, K. (author), Monni, S. (author), Neto, A. (author), Nennie, F. (author), van Rossum, W. (author)
This paper presents a novel ultra wide band (UWB) leaky slot antenna. The antenna has a wide impedance bandwidth from 3 to 14 GHz and it is suitable for radar applications requiring high resolution, phase center stability and good pulse preservation, such as medical imaging and ground penetrating radar. © 2013 EurAAP.
conference paper 2013
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Belfiori, F. (author), van Rossum, W. (author), Hoogeboom, P. (author)
The authors present a 2D-MUSIC processing for the simultaneousestimation of angular and range target positions. A2D spatial smoothing technique is also introduced in orderto cope with the coherent behavior of the received echoes, which may result in a rank deficiency of the signals covariancematrix. The algorithm is analyzed with respect to its...
conference paper 2012
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Belfiori, F. (author), van Rossum, W. (author), Hoogeboom, P. (author)
In this paper we present a technique to estimate the calibration coefficients of a coherent Multiple-Input Multiple-Output (MIMO) array radar built on a printed circuit board (PCB). Due to the integrated structure and the MIMO nature of the system, a direct measurement of each antenna element behavior cannot be performed. The proposed method is...
conference paper 2012
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Belfiori, F. (author), Monni, S. (author), van Rossum, W. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)
This paper provides a comparison between two different techniques for the array pattern side-lobe reduction in a passive radar system based on a circular array. The first method retrieves the phase modes pattern for the reference array and then applies a conventional tapering for the side lobe suppression of the obtained virtual uniform linear...
conference paper 2010
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van den Broek, A.C. (author), Burghouts, G.J. (author), van den Broek, S.P. (author), Smith, A.J.E. (author), Hagen, R.A.J. (author), Anitori, L. (author), van Rossum, W. (author), TNO Defensie en Veiligheid (author)
In current military operations threats should be monitored accurately. The use of sensors is indispensable for this purpose, for example with camera and radar systems. Using data from such systems we have studied automated procedures for extracting observable behavioral features of persons and groups, which can be associated with threats. We...
conference paper 2009
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