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Hoogeboom, P. (author), TNO Fysisch en Elektronisch Laboratorium (author)This paper, presented in poster form addresses the use of radar remote sensing in coastal zone management. Current and future applications in The Netherlands are highlighted with an outlook to technology and models that are involved. Applications include monitoring of the environment, oil spills, shipping, bottomtopography, coastal erosion. In...conference paper 1995
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- Hoogeboom, P. (author), TNO Fysisch en Elektronisch Laboratorium (author) other 1995
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Snoeij, P. (author), Hoogeboom, P. (author), Koomen, P.J. (author), Vermeulen, B.C.B. (author), Paquay, M.H.A. (author), Pouwels, H. (author)Purpose of calibration is to get an accurate and Precise instrument. The precision of the instrument can be determined using internal calibration, while the accuracy is denoted with absolute calibration. With internal calibration only the instrument is considered. Because of practical considerations the antenna is usually discarded in this type...conference paper 1994
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Hoogeboom, P. (author), Koomen, P.J. (author), Snoeij, P. (author), Pouwels, H. (author)The PHARUS project (PHARUS stands for Phased Array Universal SAR) aims for a polarimetric C-band aircraft SAR that will be finalized in 1994. The system will make use of a phased array antenna with solid state amplifiers. The project consists of two phases, a definition phase and a realization phase. The definition phase was intended to increase...conference paper 1992
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Pouwels, H. (author), Hoogeboom, P. (author), Koomen, P.J. (author), Snoeij, P. (author)The Dutch PHARUS project aims for the developrlenÈ of a polarimetric C-band aircraft SAR, to be finalized in 1994. The PHARUS systen consists of three subsystens: the radar, the subsystem for the onboard data processing and recording and the ground-based subsystem for SAR processing. PHARUS is a very flexible system with numerous operating modes...conference paper 1992
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Snoeij, P. (author), Pouwels, H. (author), Koomen, P.J. (author), Hoogeboom, P. (author), Fysisch en Elektronisch Laboratorium TNO (author)Since many years ground-based scatterometers (X and Q band) and a digital SLAR system (X-band), are used in studying the microwave scattering of vegetation, forests, sea and other targets in the Netherlands. Recently an airborne scatterometer system operating at six frequencies simuItaneously between 1 and 18 GHz has been added to the remote...conference paper 1990
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Fysisch en Elektronisch Laboratorium TNO (author), Hoogeboom, P. (author)Het classificeren en monitoren van de groei van landbouwgewassen met behulp van radarbeelden is geen eenvoudige opgave. De contrasten in één enkel beeld zijn vaak klein. De aanwezige spikkel maakt het onderscheiden van gewassen nog moeilijker. Een radarbeeld omvat altijd een zeker invalshoekbereik en voor gewassen is de...conference paper 1990
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Hoogeboom, P. (author), Koomen, P.J. (author), Pouwels, H. (author), Snoeij, P. (author)In The Netherlands a plan to design aircraft and build a polarimetric C-band SAR system of a novel design, called PHARUS (PHased Array Universal SAR) is carried out by three institutes. These institutes are the Physics and Electronics Laboratory TNO in The Hague (prime contractor and project management), The National Aerospace Laboratory NLR in...conference paper 1990
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Fysisch en Elektronisch Laboratorium TNO (author), Snoeij, P (author), Hoogeboom, P. (author), Koomen, P. (author), Pouwels, H. (author)For the study of microwave scattering of vegetation, forests, sea and other targets groundbased and airborne scatterometers and a digital SLAR system (X-band) are used since many years in The Netherlands. All these systems are absolutely calibrated. The experience gained with building radar remote sensing systems led to the development of a...conference paper 1990
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Hoogeboom, P. (author), Koomen, P.J. (author), Otten, M.P.G. (author), Pouwels, H. (author), Snoeij, P. (author)A few years ago three institutes in the Netherlands developed a plan to design and build a polarimetric C-band aircraft SAR system of a novel design, called PHARUS (PHased Array Universal SAR), meant as a replacement for our current digital SLAR system. These institutes are the Physics and Electronics Laboratory TNO in The Hague (prime...conference paper 1989
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Hoogeboom, P. (author), Koomen, P.J. (author)In The Netherlands a digital SLAR system (X-band) is used since many years remote sensing in radar remote sensing research. An example of results and the system's key features are given in this paper. Calibration and high geometric and radiometric accuracy were the keywords to success in remote sensing for this system. Based on this experience a...conference paper 1989
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Hoogeboom, P. (author)In The Netherlands a digltal SLAR system (X-band)is used since many years in the radar remote sensing research. This system supports research Programs in which also other equipment is used, for instance a multiband airborne scatterometer. Based on our experience in radar remote sensing a polarimetric C-band aircraft SAR is designed, to be...article 1988
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Hoogeboom, P. (author)In the period between 1975 and l98l the ROVE team (Radar Observation of VEgetation) in the Netherlands collected data on the radar backscatter of crops through the growing season, Using these data general trends in the behaviour of the radar backscatter through the growing season (temporal signatures) can be determined for a number of crops. The...conference paper 1985
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Hoogeboom, P. (author)In 1980 a large SLAR flight program was carried out over an agricultural area in The Netherlands. A classification study on this multitenporal dataset (Ref, l) showed that high accuracies are obtained from a simultaneous classification of 3 flights. In this paper the results of a follow on study will be discussed. The goal is to obtain the best...conference paper 1985
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Physisch laboratorium TNO (author), de Loor, G.P. (author), Hoogeboom, P. (author)Een overzicht van het onderzoek dat op het terrein van de aardobservatie met behulp van radar in Nederland wordt verricht voor toepassing op land en op zee. Dit onderzoek vindt plaats onder auspiciën van de interdepartementale Begeleidings Commissie Remote Sensing (BCRS) en geschiedt in interdisciplinaire werkgroepen. Hierbij wordt zowel het...article 1984
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Hoogeboom, P. (author)For the past few years an accurate X-band SLAR system with digital recording has been available in The Netherlands. The images of this system are corrected to indicate radar backscatter coefficients (gamma) instead of arbitrary greytones. In 1980 a radar measurement campaign was organized in the Flevopolder area. Ground-based measurements were...article 1983
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Hoogeboom, P. (author), Physisch Laboratorium TNO (author)Studies on microwave surface scattering in The Netherlands have indicated the need for accurate radar systems for applications in remote sensing. An SLAR system with digital recording was developed and is now being used for several programmes. This system was designed with special attention to speckle reduction and system accuracy. The digital...article 1983
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Hoogeboom, P. (author)Zoals in het artikel van Th. A. de Boer is vermeld, wordt in Nederland reeds gedurende een aantal jaren onderzoek verricht aan de radarreflectie van landbouwgewassen en kale gronden. Dit onderzoek geschiedt door de gezamenlijk inspanning van een aantal instituten, verenigd in de ROVE groep (Radar Onderzoek VEgetatie). Het onderzoek wordt...article 1983
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Hoogeboom, P. (author)In 1981 ESA (European Space Agency) organized a large measurement campaign in Europe to stimulate the interest in radar, especially SAR. The Canadian SAR 580 system visited testsites during a 1 month period. Imagery was acquired in X, C and L band. Since several experiments called for calibrated measurement values, a calibration program was...conference paper 1983
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Hoogeboom, P. (author), Binnenkade, P. (author), Veugen, L.M.M. (author)In The Netherlands an accurate SLAR system with digital data recording is used for measurements within the framework of the national microwave remote sensing research program. However, the images are disturbed by unwanted platform motions due to, e.g., turbulence at the low operating height (300–3000 m) of the SLAR system. An algorithm is...conference paper 1983