Results 51 to 60 of about 21,138 (215)

3D imaging of moving targets for ultra‐wideband MIMO through‐wall radar system

IET Radar, Sonar & Navigation, 2021
Ultra‐wideband (UWB) radar is widely used in static through‐wall imaging (TWI). There are still many imaging problems of motion through‐wall targets for complex system structure and unknown wall environment.
Jun Pan, Shengbo Ye, Cheng Shi, Kun Yan, Xin Liu, Zhikang Ni, Guangyao Yang, Guangyou Fang   +7 more
doaj   +1 more source

Non-Linear Regularized Attenuation Compensation for Microwave Breast Imaging

IEEE Open Journal of Signal Processing, 2023
We develop non-linear optimization algorithms for attenuation compensation of rapidly time-varying microwave signals in the context of breast imaging.
Nasser Kazemi, Elise Fear
doaj   +1 more source

Terahertz dynamic aperture imaging at stand-off distances using a Compressed Sensing protocol

, 2019
In this text, results of a 0.35 terahertz (THz) dynamic aperture imaging approach are presented. The experiments use an optical modulation approach and a single pixel detector at a stand-off imaging distance of approx 1 meter.
Augustin, Sven, Frohmann, Sven, Huebers, Heinz-Wilhelm, Jung, Peter   +3 more
core   +1 more source

Maximum likelihood analysis of systematic errors in interferometric observations of the cosmic microwave background [PDF]

, 2013
We investigate the impact of instrumental systematic errors in interferometric measurements of the cosmic microwave background (CMB) temperature and polarization power spectra.
Andrei Korotkov, Ata Karakci, Battistelli, Benjamin D. Wandelt, Bond, Bunn, Bunn, Bunn, Bunn, Bunn, Bunn, Bunn, Emory F. Bunn, Gorski, Gregory S. Tucker, Guth, Hu, Hu, Kamionkowski, Kamionkowski, Kendall, Komatsu, Larson, Le Zhang, Lewis, Lewis, Miller, Myers, O'Sullivan, Park, Park, Paul M. Sutter, Pearson, Peter Timbie, Scott, Shimon, Su, Timbie, White, Yadav, Zaldarriaga, Zaldarriaga   +41 more
core   +5 more sources

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Fast Frequency-Diverse Radar Imaging Based on Adaptive Sampling Iterative Soft-Thresholding Deep Unfolding Network

Remote Sensing, 2023
Frequency-diverse radar imaging is an emerging field that combines computational imaging with frequency-diverse techniques to interrogate the high-quality images of objects.
Zhenhua Wu, Fafa Zhao, Lei Zhang, Yice Cao, Jun Qian, Jiafei Xu, Lixia Yang   +6 more
doaj   +1 more source

Velocity Dealiased Spectral Estimators of Range Migrating Targets using a Single Low-PRF Wideband Waveform [PDF]

, 2013
Wideband radars are promising systems that may provide numerous advantages, like simultaneous detection of slow and fast moving targets, high range-velocity resolution classification, and electronic countermeasures.
Besson, Olivier, Bidon, Stéphanie, Deudon, François, Tourneret, Jean-Yves   +3 more
core   +3 more sources

High‐Power Rapid Laser‐Induced Synthesis of Multi‐functional Cobalt Metal‐Organic Framework With an Unprecedented Synthesis Efficiency

Advanced Materials Technologies, EarlyView.
Laser‐assisted synthesis enables rapid (within 1 h) and high‐yield (≥90%) production of Co‐MOFs with mesoporous structures, tunable magnetic and optical properties, and efficient adsorption of N2, CH4, and CO2 for low‐energy gas separation. DFT calculations elucidate the electronic structure and adsorption behavior.
Saliha Mutlu, Bülend Ortaç, Ali Karatutlu, Taylan Gorkan, Engin Durgun, Dilek Soyler, Saniye Soylemez, Jelena Lillepäg, Volkan Filiz, Nergis Arsu, Sevil Savaskan Yilmaz   +10 more
wiley   +1 more source

Experimental Results of a 3D Millimeter-Wave Compressive-Reflector-Antenna Imaging System

, 2018
This letter presents the first experimental results of our three-dimensional (3D) millimeter-wave (mm-wave) Compressive-Reflector-Antenna (CRA) imaging system.
Bisulco, A., Gomez-Sousa, Hipolito, Graham, Katherine, Heredia-Juesas, Juan, Martinez-Lorenzo, Jose A., Molaei, Ali, Tirado, Luis, Zhang, Weite   +7 more
core   +1 more source

TARGET DETECTION FROM MICROWAVE IMAGING BASED ON RANDOM SPARSE ARRAY AND COMPRESSED SENSING [PDF]

Progress In Electromagnetics Research B, 2013
This paper proposes an imaging scheme using a random sparse array (RSA) structure for radar target detection using compressed sensing (CS). The array collects sparse measurements with less collection time and data storage. Two schemes of the RSA are considered, random SAR mode and random array mode.
Huang, Ling, Lu, Yi Long
openaire   +2 more sources