Results 101 to 110 of about 236,819 (143)
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IEEE Transactions on Antennas and Propagation, 1980
A microwave lens that is based on the principles of holography is described. It consists of a zone plate, and it has been shown theoretically and experimentally that it has the limit of resolution, which is predicted by the aperture and the wavelength used.
G. Hampsas, C. Stephanis
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A microwave lens that is based on the principles of holography is described. It consists of a zone plate, and it has been shown theoretically and experimentally that it has the limit of resolution, which is predicted by the aperture and the wavelength used.
G. Hampsas, C. Stephanis
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Multifrequency microwave imaging
The Fifth International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves (IEEE Cat. No.04EX828), 2004Microwave imaging techniques are considered to be of great importance for different applications, and are extensively studied. One of the biggest problems of microwave imaging investigation is lack of experimental investigations what holds off practical implementation of these techniques.
V. Pahomov, S. Kurilo, V. Semenchik
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IEEE Microwave Magazine, 2012
Due to the enormous advances made in semiconductor technology over the last few years, high integration densities with moderate costs are achievable even in the millimeter-wave (mm-wave) range and beyond, which encourage the development of imaging systems with a high number of channels.
Lorenz-Peter Schmidt +5 more
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Due to the enormous advances made in semiconductor technology over the last few years, high integration densities with moderate costs are achievable even in the millimeter-wave (mm-wave) range and beyond, which encourage the development of imaging systems with a high number of channels.
Lorenz-Peter Schmidt +5 more
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Introduction to Microwave Imaging
2014In this chapter a review of different electromagnetic (EM) imaging methods is presented. The focus on microwave tomography, the types, and advantages and disadvantages of local and global optimization in microwave imaging are reviewed.
Ali Ashtari +3 more
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[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium, 1992
Es wird ueber die gemeinsamen Aktivitaeten in dem Projekt "Microwave Imaging" zwischen INPE/CTA und der DLR berichtet. Hierbei werden die Schwerpunkte: Mikrowellen-Radiometrie, abbildendes Radar und SAR-Processing dargestellt.
F. Witte, J. Moreira
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Es wird ueber die gemeinsamen Aktivitaeten in dem Projekt "Microwave Imaging" zwischen INPE/CTA und der DLR berichtet. Hierbei werden die Schwerpunkte: Mikrowellen-Radiometrie, abbildendes Radar und SAR-Processing dargestellt.
F. Witte, J. Moreira
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Proceedings of the IEEE, 1988
Three methods of imaging aircraft from the ground with microwave radar with quality suitable for aircraft target recognition are described. The imaging methods are based on a self-calibration procedure called adaptive beamforming that compensates for the severe geometric distortion inherent in any imaging system that is large enough to achieve the high
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Three methods of imaging aircraft from the ground with microwave radar with quality suitable for aircraft target recognition are described. The imaging methods are based on a self-calibration procedure called adaptive beamforming that compensates for the severe geometric distortion inherent in any imaging system that is large enough to achieve the high
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Superhigh image resolution for microwave imaging
International Journal of Imaging Systems and Technology, 1990AbstractAlgorithms for extrapolating the scattered field along the frequency direction and the azimuthal direction are developed and analyzed. Their effects on the image resolution for polar format processing and rectangular format processing are discussed.
Ta-Yung Liu +2 more
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2016
Radar breast imaging (RBI) involves the illumination of the breast with a microwave pulse. If a tumour is present, backscattered radar signals are generated due to the dielectric contrast between normal and tumour tissue at microwave frequencies. These backscattered signals are processed by an RBI beamformer to identify the presence and location of any
Muhammad Adnan Elahi +5 more
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Radar breast imaging (RBI) involves the illumination of the breast with a microwave pulse. If a tumour is present, backscattered radar signals are generated due to the dielectric contrast between normal and tumour tissue at microwave frequencies. These backscattered signals are processed by an RBI beamformer to identify the presence and location of any
Muhammad Adnan Elahi +5 more
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An imaging microwave radiometer†
International Journal of Remote Sensing, 1983Abstract The phase A study of an imaging microwave radiometer (IMR) has been completed, for ESA, by a team of contractors led by BAe. The instrument design which was established during this study is described in this paper. The IMR would be able to measure the intensity of radiation in the microwave band at a number of specific frequencies.
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Multidimensional microwave imaging
Microwave and Optical Technology Letters, 1995AbstractThe high computational load associated with multidimensional high‐resolution algorithms is overcome by using only 1D LP techniques. The 3D backscattered field is approximated by three 1D AR models that are solved in succession for the down‐range, horizontal cross‐range, and vertical cross‐range positions of the scattering centers of a target.
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