Searched for: subject%3A%22RAD%255C%2B%255C-%255C%2BRadar%255C%2BTechnology%22
(1 - 9 of 9)
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Soer, M.C.M. (author), Klumperink, E.A.M. (author), Nauta, B. (author), van Vliet, F.E. (author)
Phased-array receivers provide two major benefits over single-antenna receivers [1]. Their signal-to-noise ratio (SNR) doubles for each doubling in the number of elements, resulting in extended range. Secondly, interferers can be rejected in the spatial domain for increased link robustness. These arrays can be implemented by phase shifting and...
conference paper 2011
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Huizing, A.G. (author)
Eind dit jaar verwachtTNO versie 4.0 op te leveren van zijn betaalbare digitale multibeamradar Amber. Het systeem is oorcpronkelijk ontwikkeld voor kleine toestellen die vliegen zonder hulp van de verkeersleiding. lnmiddels kijken de TN0'ers naar veel meer toepassingen, van havenbewaking tot zorg op afstand.
article 2011
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van Rossum, W.L. (author), de Wit, J.J.M. (author), Otten, M.P.G. (author), Huizing, A.G. (author)
This presents three valuable applications of scalable multifunction RF (SMRF) systems. These systems allow radar, ESM, and communication functionality using a single front-end architecture. With the use of a novel system design tool, concepts for SMRF architectures for airborne, ground-based and naval applications have been obtained based on a C...
article 2011
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Cavallo, D. (author), Neto, A. (author), Gerini, G. (author)
Connected arrays constitute the only family of antenna arrays for which the spectral Green's Functions have been derived analytically. This formalism is extended here to the receiving case. When the arrays are assumed to be infinitely extended and periodically excited, rigorous equivalent networks can be derived to represent the electromagnetic...
article 2011
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Anitori, L. (author), Otten, M.P.G. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)
In this paper we present some preliminary results on the application of Compressive Sensing (CS) to high resolution radar imaging. CS is a recently developed theory which allows reconstruction of sparse signals with a number of measurements much lower than what is required by the Shannon sampling theorem. This method has already found its way in...
conference paper 2010
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Otten, M.P.G. (author), de Wit, J.J.M. (author), Smits, F.M.A. (author), van Rossum, W.L. (author), Huizing, A. (author), TNO Defensie en Veiligheid (author)
RF systems based on modular architectures have the potential of better re-use of technology, decreasing development time, and decreasing life cycle cost. Moreover, modular architectures provide scalability, allowing low cost upgrades and adaptability to different platforms. To achieve maximum benefit from modularity and scalability, the...
conference paper 2010
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Otten, M. (author), Maas, N. (author), Bolt, R. (author), Anitori, L. (author), TNO Defensie en Veiligheid (author)
A light weight SAR has been designed, suitable for short range tactical UAVs, consisting of a fully digital receive array, and a very compact active transmit antenna. The weight of the complete RF front is expected to be below 3 kg, with a power consumption below 30 W. This X-band system can provide image resolution down to 10 cm at up to 5 km...
conference paper 2010
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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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Neto, A. (author), Cavallo, D. (author), Gerini, G. (author), TNO Defensie en Veiligheid (author)
Connected array antennas are planar radiators in which the mutual coupling between the neighboring elements is so high that the antenna elements are effectively touching each other. Physically touching connected arrays have been formally introduced by R. Hansen [1] and were then developed for wideband through the foliage observations by J.J. Lee...
conference paper 2010
Searched for: subject%3A%22RAD%255C%2B%255C-%255C%2BRadar%255C%2BTechnology%22
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