Fv
Fred van der Zwan
40 records found
1
Authored
This paper focuses on the experimental validation of probing signals designed to enable radar operation in spectrally crowded environments using an S-band Software Defined Radar (SDR). The tested waveforms ensure spectral coexistence between the sensing system and frequency-overl
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This paper investigates the possibility of transmitting waveforms designed to enable spectral coexistence between radar and other Radio Frequency (RF) wireless systems via a Software Defined Radar (SDR). The design technique tested in this study nominally enables the placement ...
The phase coded FMCW and its properties for joint sensing and communication are studied. Two different receiver structures for the sensing properties of this waveform are compared theoretically and experimentally. It is shown both by simulations and experiments that the phased co
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Classical saw-tooth Frequency Modulated Continuous Wave (FMCW) radars experience a coupling between the maximum unambiguous Doppler-velocity interval, maximum operational range, range-resolution and processing gain. Operationally, a trade-off is often necessarily made between the
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Weather radar is well recognized as an effective sensor for obtaining the microphysical and dynamical properties of precipitation at high spatial and temporal resolution. Radar calibration is one of the most important prerequisites for achieving accurate observations. In this art
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This report discusses one part of a project consisting of three parts. The goal of the project is to design a battery less sensor powered by RF energy fields present in an office environment. The sensor is able to measure temperature and is able to communicate wirelessly using a
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The article describes the IRCTR PARSAX radar system. It is an S-band high-resolution Doppler polarimetric FMCW radar utilizing dual-orthogonal sounding signals. The signals allow for measuring in one sweep all elements of the radar targets polarization scattering matrix simultane
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An FPGA-based digital receiver has been developed to perform real-time processing for the PARSAX radar. It is a fully polarimetric FMCW radar with dual-orthogonal sounding signals, which has the possibility to measure all elements of the radar targets polarization scattering matr
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Polarimetric agile radar is able to measure all elements of the polarization-dependent backscattering matrix (BSM) simultaneously. Polarimetric calibration is an important issue to determine the BSM accurately. This paper focuses mainly on the internal and semi-external calibrati
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This paper outlines the work on the design of a reconfigurable receiver for the PARSAX radar. The FPGA based digital receiver samples incoming signals at intermediate frequency (IF) and processes signals digitally instead of using more conventional analog approaches. In this way
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Polarimetric agile radar is able to measure all elements of the polarization-dependent backscattering matrix (BSM) simultaneously. Polarimetric calibration is an important issue to determine the BSM accurately. This paper focuses mainly on the internal and semi-external calibrati
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The article describes the IRCTR PARSAX radar system - fully polarimetric FMCW radar with dual-orthogonal sounding signals, which has the possibility to measure all elements of the radar targets polarization scattering matrix simultaneously, in one sweep.@en
The algorithms of the signal processing and the functional scheme of the polarization radar with simultaneous back scattering matrices measurements are givenin this paper. The radar is destined for low atmosphere remote sensing.@en
Spatial diversity techniques are advantageous if the received signals of the diversity branches are sufficiently uncorrelated. Theoretical study using the power unbalance between the two branches employing Laplacian direction of arrival (DOA) distribution is carried out. It is sh
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Contributed
This report discusses one part of a project consisting of three parts. The goal of the project is to design a battery less sensor powered by RF energy fields present in an office environment. The sensor is able to measure temperature and is able to communicate wirelessly using a
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This report discusses one part of a project consisting of three parts. The goal of the project is to design a battery less sensor powered by RF energy fields present in an office environment. The sensor is able to measure temperature and is able to communicate wirelessly using a
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