Results 61 to 70 of about 2,457,520 (174)
Laser Application and Sparse Imaging Analysis of Diffractive Optical System
Leida xuebao, 2020 In recent years, the diffractive optical systems have developed rapidly. Diffractive devices such as binary optical device and membrane-based lens are equivalent to fixed phase shifters of microwave antennas.
LI Daojing +6 more
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Journal of Imaging, 2019 In this paper, the full-vectorial three-dimensional (3D) microwave imaging (MI) of sparse scatterers is dealt with. Towards this end, the inverse scattering (IS) problem is formulated within the contrast source inversion (CSI) framework and it is aimed ...
Marco Salucci +2 more
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Sensors, 2020 Despite the sparse distribution of meteorological stations and issues with missing data, vector-borne disease studies in Ethiopia have been commonly conducted based on the relationships between these diseases and ground-based in situ measurements of ...
Woubet G. Alemu, Michael C. Wimberly
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Microwave Imaging From Sparse Measurements for Near-Field Synthetic Aperture Radar
IEEE Transactions on Instrumentation and Measurement, 2017 This paper reports the experimental studies for four image reconstruction methods from sparse measurement using wideband microwave synthetic aperture radar systems. The four methods include two denoising methods using zero filling (ZF) and nonuniform fast Fourier transform (NUFFT), and two compressed sensing (CS) methods using the orthogonal matching ...
Xiahan Yang +3 more
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Breast cancer detection using microwave holography [PDF]
, 2010 Breast cancer is one of the most common forms of cancer in women. X-ray mammography is the most widely used technique for early detection but has limitations.
Smith, Dave +3 more
core
Nonlinear microwave imaging using Levenberg-Marquardt method with iterative shrinkage thresholding
, 2014 Development of microwave imaging methods applicable in sparse investigation domains is becoming a research focus in computational electromagnetics (D.W. Winters and S.C. Hagness, IEEE Trans. Antennas Propag., 58(1), 145-154, 2010).
Abdulla Desmal +3 more
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Dispersive Fourier Transformation for Versatile Microwave Photonics Applications [PDF]
, 2014 : Dispersive Fourier transformation (DFT) maps the broadband spectrum of an ultrashort optical pulse into a time stretched waveform with its intensity profile mirroring the spectrum using chromatic dispersion.
Wang, Chao, Chao Wang
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MICROWAVE IMAGING OF NON-RIGID MOVING TARGET USING 2D SPARSE MIMO ARRAY
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018 This paper develops a microwave/mmw (millimeter-wave) imaging method for moving objects of non-rigid body which can be used in the heavy traffic scenarios. This method is proposed with a 2D sparse MIMO (multiple-input multiple-output) array composed of two orthogonal linear arrays.
Zhanyu Zhu, Lei Kuang, Feng Xu 0001
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CR-DEQ-SAR: A Deep Equilibrium Sparse SAR Imaging Method for Compound Regularization
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingSynthetic aperture radar (SAR) is a microwave remote sensing technology offering all-weather, high-resolution imaging. The rising demand for high precision and real-time processing under complex conditions in resource-constrained environments has spurred
Guoru Zhou +4 more
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Estimating snow depth on Arctic sea ice using satellite microwave radiometry and a neural network [PDF]
The Cryosphere, 2019 Snow lying on top of sea ice plays an important role in the radiation budget because of its high albedo and the Arctic freshwater budget, and it influences the Arctic climate: it is a fundamental climate variable.
A. Braakmann-Folgmann, C. Donlon
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