Results 71 to 80 of about 6,421,419 (387)

Hyper-parameter selection in non-quadratic regularization-based radar image formation [PDF]

, 2008
We consider the problem of automatic parameter selection in regularization-based radar image formation techniques. It has previously been shown that non-quadratic regularization produces feature-enhanced radar images; can yield superresolution; is ...
Batu, Ozge, Batu, Özge, Cetin, Mujdat, Çetin, Müjdat   +3 more
core   +1 more source

Sector imaging radar for enhanced vision [PDF]

Aerospace Science and Technology, 2003
Summary: SIREV (sector imaging radar for enhanced vision) is an innovative airborne radar system which can supply high-quality images in any desired direction under almost every weather condition. In contrast to synthetic aperture radar systems, no relative motion between sensor and targets is required in SIREV.
Krieger, Gerhard, Mittermayer, Josef, Buckreuss, Stefan, Wendler, Michael, Sutor, Thomas, Witte, Franz, Moreira, Alberto   +6 more
openaire   +2 more sources

SMaRT Stacking: A Methodology to Produce Optimally Layered EMI Shields with Maximal Green Index Using Fused Deposition Modeling

Advanced Functional Materials, EarlyView.
Electromagnetic interference (EMI) shields consisting of polylactic acid (PLA) in layers with different concentrations of multiwalled carbon nanotubes (MWCNT) are produced using additive manufacturing. The permittivity function of layers with different filler concentrations is learned using data of homogeneous and randomly ordered shields.
Stijn De Smedt, Brecht Evens, Pramod Ravichandran, Panagiotis Patrinos, Frederik Van Loock, Ruth Cardinaels   +5 more
wiley   +1 more source

Broadband LFM Radar Imaging System Based on Microwave Photonic I/Q De-chirping

Leida xuebao, 2019
We propose a novel scheme of broadband LFM radar imaging system based on microwave photonic I/Q de-chirping. In the transmitter, a broadband linear frequency modulated signal is generated by photonic frequency-doubling.
YANG Yue, YE Xingwei, ZHANG Fangzheng, PAN Shilong   +3 more
doaj   +1 more source

Sparse representation-based synthetic aperture radar imaging [PDF]

, 2011
There is increasing interest in using synthetic aperture radar (SAR) images in automated target recognition and decision-making tasks. The success of such tasks depends on how well the reconstructed SAR images exhibit certain features of the underlying ...
Cetin, Mujdat, Masnadi-Shirazi, Mohammad Ali, Samadi, Sadegh, Çetin, Müjdat   +3 more
core   +1 more source

Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth

Advanced Functional Materials, EarlyView.
This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh, Ankita Mohanty, Amit Malakar, Suryasarathi Bose, Suprakas Sinha Ray   +4 more
wiley   +1 more source

Interstitial N‐Strengthened Copper‐Based Bioactive Conductive Dressings Combined with Electromagnetic Fields for Enhanced Wound Healing

Advanced Healthcare Materials, EarlyView.
This study developed a nitrogen‐strengthened copper‐iron‐zinc (N‐CuFeZn) alloy bioactive dressing integrated with electromagnetic stimulation. The coaxial dressing, made from 0.04 mm filaments with 1120 MPa tensile strength, showed that electromagnetic activation enhanced therapeutic outcomes by increasing VEGF expression, promoting angiogenesis (2.1 ...
Xiaohui Qiu, Xianrui Wu, Shaohua Wang, Jie Gu, Senhao Ying, Jiaohao Mo, Chen Jing, Huiliang Cao, Zhongchang Wang, Jianda Zhou   +9 more
wiley   +1 more source

Rational Molecular Design of Aniline‐Based Donor‐Acceptor Conducting Polymers Enhancing Ionic Molecular Interaction for High‐Performance Wearable Bioelectronics

Advanced Healthcare Materials, EarlyView.
Organic conducting polymers are crucial for advanced wearable bioelectronic devices. A novel aniline‐based donor‐acceptor conducting polymer is developed via a rational molecular design approach, exhibiting enhanced ionic molecular interactions for highly sensitive and stable wearable pH sensors.
Junning Qian, Ruya Shi, Li Zhang, Wing Cheung Mak   +3 more
wiley   +1 more source

An Innovative “Tooth‐On‐Chip” Microfluidic Device Emulating the Structure and Physiology of the Dental Pulp Tissue

Advanced Healthcare Materials, EarlyView.
This work presents a “tooth‐on‐chip” device that mimics dental pulp tissue. By co‐culturing key cell types, it recreates vascular networks, stem cell niches, the odontoblast/dentine interface, and trigeminal innervation. This innovative platform provides a unique model of dental pulp structure and physiology, with significant potential for accelerating
Alessandro Cordiale, Deborah Stanco, Roberta Visone, Bernd Stadlinger, Pierfrancesco Pagella, Marco Rasponi, Thimios A. Mitsiadis   +6 more
wiley   +1 more source

LPI Optimization Framework for Radar Network Based on Minimum Mean-Square Error Estimation

Entropy, 2017
This paper presents a novel low probability of intercept (LPI) optimization framework in radar network by minimizing the Schleher intercept factor based on minimum mean-square error (MMSE) estimation.
Ji She, Jianjiang Zhou, Fei Wang, Hailin Li   +3 more
doaj   +1 more source