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Melief, H.W. (author), Greidanus, H. (author), van Genderen, P. (author), Hoogeboom, P. (author)Abstract—In this paper three sets of high-resolution, coherent, and polarimetric radar sea clutter data are analyzed and compared with radar sea clutter models. The nature of the data allows a thorough analysis of the power, polarization and velocity of the sea clutter. It is shown that these quantities, especially the velocity, are good...article 2006
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de Wit, J.J.M. (author), Meta, A. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)The combination of compact frequency-modulated continuous-wave (FM-CW) technology and high-resolution synthetic aperture radar (SAR) processing techniques should pave the way for the development of a lightweight, cost-effective, high-resolution, airborne imaging radar. Regarding FM-CW SAR signal processing, the motion during the transmission of...article 2006
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Meta, A. (author), Hakkaart, P. (author), van der Zwan, F. (author), Hoogeboom, P. (author), Ligthart, L.P. (author)At the Delft University of Technology, an X-band airborne FMCW SAR demonstrator system has been designed anddeveloped. The combination of Frequency Modulated Continuous Wave (FMCW) technology and Synthetic Aperture Technique (SAR) has led to a compact, low power consuming imaging system with high resolution. The system has been extensively...conference paper 2006
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TNO Defensie en Veiligheid (author), Meta, A. (author), Hoogeboom, P. (author), Ligthart, L.P. (author)This paper presents a novel approach for processing data acquired with Frequency Modulated Continuous Wave (FMCW) dechirp-on-receive systems by using a non-linear frequency scaling algorithm. The range frequency non-linearity correction, the Doppler shift induced by the continuous motion and the range migration removal are performed at the same...conference paper 2006
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Meta, A. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)For airborne earth observation applications, there is a special interest in lightweight, cost effective, imaging sensors of high resolution. The combination of Frequency Modulated Continuous Wave (FMCW) technology and Synthetic Aperture Radar (SAR) techniques can lead to such a sensor. In this paper, a developed algorithm for SAR imaging that...conference paper 2005
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Nekrasov, A. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)A Ka-band backscatter model and an algorithm for measurement of the wind speed and direction over the sea surface by a frequency-modulated continous-wave radar demonstrator system operated in scatterometer mode have been developed. To evaluate the proposed algorithm, a simulation of the wind vector retrieval has been performed.article 2005
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Figueras i Ventura, J. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)A preliminary study of the design of a small, low cost, Pband airborne, polarimetric synthetic aperture radar (SAR) is presented. The design was requested by the Wageningen University and the Borneo Orangutan Survival Foundation (BOS) to carry out forest biomass monitoring in Indonesia. The requirements of the application are established and the...conference paper 2005
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Lidicky, L. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)The paper presents a matrix approach to implementation of SAR signal generating and processing schemes. This approach is advantageous when matrix oriented software such as Matlab is used. Algorithms written in this type of software packages run faster compared to the same algorithms written for the same package using classical programming...conference paper 2005
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Meta, A. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)The combination of Frequency Modulated Continuous Wave (FMCW) technology and Synthetic Aperture Radar (SAR) leads to lightweight, cost-effective imaging sensors of high resolution. In FMCW SAR applications the conventional stopand- go approximation used in pulse radar algorithms cannot be considered valid anymore and so the motion within the...conference paper 2005
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Lidicky, L. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)In this paper, techniques for raw SAR signal generation are studied. An approach based on the evaluation of a superposition integral in the Fourier domain is studied and compared to a direct evaluation of this integral. Results from the implementation of an algorithm presented in literature are shown and a modified technique is proposed to...conference paper 2005
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TNO Defensie en Veiligheid (author), Hoogeboom, P. (author), de Wit, J.J.M. (author), Meta, A. (author), Figueras, J. (author)In some earth observation applications there is a requirement for low cost, high performance imaging radar systems small enough to be operated from small, even unmanned, aircraft. The existing pulse radars are non-cost effective complex systems. Therefore they are not suited for these applications. Frequency Modulated Continuous Wave (FM-CW)...conference paper 2005
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Meta, A. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)The combination of Frequency Modulated ContinuousWave (FMCW) technology and Synthetic Aperture Radar (SAR) leads to lightweight, cost-effective imaging sensors of high resolution. In FMCW SAR applications the conventional stop-and-go approximation used in pulse radar algorithms cannot be considered valid anymore, so the motion within the sweep...conference paper 2005
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TNO Defensie en Veiligheid (author), Meta, A, (author), Lorga, J.F.M. (author), de Wit, J.J.M. (author), Hoogeboom, P. (author)Airborne synthetic aperture radar is a promising new application for FM-CW radars. At the IRCTR, an operational demonstrator system has been developed in order to investigate the practicability of FM-CW SAR and to prove that an FM-CW SAR system can be operated in an efficient manner from a small platform. The platform used to fly the...conference paper 2005
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TNO Fysisch en Elektronisch Laboratorium (author), Hoogeboom, P. (author), Hommel, H. (author), Hausle, J. (author), Hubeek, J. (author), Lopez, L. (author), Canafoglia, G. (author)In view of the NATO Air to Ground Surveillance requirement a feasibility study on the development of an advanced SAR/MTI radar system has been conducted by a group of industries from 6 nations (FR, GE, IT, NL, SP, USA). The architectural design of the system is based on knowledge from currently ongoing radar programs in these countries. A...conference paper 2004
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TNO Fysisch en Elektronisch Laboratorium (author), Figueras i Ventura, J. (author), Hoogeboom, P. (author)A preliminary study of the design of a small, low cost, P-band airborne, polarimetric Synthetic Aperture Radar desired by the Wageningen University and the Borneo Orangutan Survival Foundation (BOS) to carry out forest biomass monitoring in Indonesia is presented. The requirements of the application are established and the main radar parameters...conference paper 2004
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TNO Fysisch en Elektronisch Laboratorium (author), Meta, A. (author), de Wit, J.J.M. (author), Hoogeboom, P. (author)The combination of compact FM-CW radar technology and high resolution SAR processing techniques should pave the way for the development of a small, lightweight and cost effective imaging radar. In the field of airborne earth observation, SAR is however a novel application for FM-CW radars. At IRCTR a project was started to investigate the...conference paper 2004
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Melief, H.W. (author), Greidanus, H.S.F. (author), Hoogeboom, P. (author), van Genderen, P. (author), TNO Fysisch en Elektronisch Laboratorium (author)A model for describing radar sea clutter is proposed. It consists of two parts, an oceanographic and an electromagnetic one. The former contains swell, small capillary and gravity waves as well as breaking wave events. The latter combines ray tracing, Bragg scattering and the Method of Moments. It is shown that the combination of the two models...conference paper 2003
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Meta, A. (author), Hoogeboom, P. (author)Combining frequency modulated continuous wave (FM-CW) teehnology with synthetic aperture radar (SAR) methods leads to a cost-effective, high resolution imaging radar for smallscale applications. There is a growing interest in miniaturized versions of such sysfems. The radar delivers its output in the frequency domain rather then in the time...conference paper 2003
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de Wit, J.J.M. (author), Hoogeboom, P. (author)Compact FM-CW technology combined with high resolution SAR techniques should pave the way for a small and cost effective imaging radar. A research project has been inìtiated to investigate the feasibility of FM-CW SAR. Within the framework of the project an operational airborne FM-CW SAR demonstrator is being implemented. Furthermore, a detailed...conference paper 2003
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Greidanus, H.S.F. (author), Melief, H.W. (author), Hoogeboom, P. (author), van Genderen, P. (author), TNO Fysisch en Elektronisch Laboratorium (author)The non-stationary nature of high resolution grazing angle X-band radar backscatter of the sea surface is investigated. The temporal behavior is modeled as resulting from a fast and a slow process, and statistical parameters are derived for both processes separately. It is found that the fast process is consistent with an underlying complex...conference paper 2001