Results 71 to 80 of about 6,360,179 (406)
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 +3 more
doaj +1 more source
Leida xuebao, 2023 For the resource allocation problem of multitarget tracking in a spectral coexistence environment, this study proposes a joint transmit power and dwell time allocation algorithm for radar networks.
Chenguang SHI, Jing DONG, Jianjiang ZHOU
doaj +1 more source
Time-Delay Multiplexing of Two Beams in a Terahertz Imaging Radar [PDF]
, 2010 We demonstrate a time-delay multiplexing technique that doubles the frame rate of a 660–690-GHz imaging radar with minimal additional instrument complexity.
Bryllert, Tomas +5 more
core +1 more source
Advanced Functional Materials, EarlyView.This study demonstrates a molecular strategy to enhance the stretchability of conjugated polymers by incorporating plasticizing molecular additives (PMAs). PMAs reduce the persistence length and promote chain entanglement, enabling deformable thin films with preserved electrical performance. A systematic analysis combining rheology, neutron scattering,
Sein Chung +11 more
wiley +1 more source
Radar imaging mechanism of marine sand waves at very low grazing angle illumination [PDF]
, 2005 The investigations carried out between 2002-2004 during several field experiments within the Op-erational radar and optical mapping in monitoring hydrodynamic, morphodynamic and environ-mental parameters for coastal management project (OROMA) aimed to ...
Hennings, Ingo, Herbers, Dagmar
core
Hydrogel‐Mediated Preservation of Live Tumor Explants for Drug Development in Peritoneal Metastases
Advanced Materials, EarlyView.This study presents a hyaluronan‐based hydrogel platform preserving the native tumor microenvironment (morphology, tissue composition, histology) of patient‐derived explants from peritoneal metastases, enabling clinically relevant drug screening. Hydrogel properties such as stiffness and degradation are crucial for longer‐term histoculture.
Kenny Zhuoran Wu +16 more
wiley +1 more source
Multiantenna GPS-Over-Fiber System for Attitude Determination Using Phase-Derived Range Measurement
IEEE Photonics Journal, 2019 A multiantenna global positioning system over fiber (GPS-over-fiber) system with real-time line bias monitoring is proposed for attitude determination of vehicles.
Xiangchuan Wang +3 more
doaj +1 more source
Advanced Materials, EarlyView.Photomagnetic nanoactuators with ≈90% scattering efficiency in the second near‐infrared window are demonstrated to exhibit magnetic field‐controlled modulation of optical scattering and optical coherence tomography signals. These nanoactuators are reversibly assembled and disassembled under the external magnetic field modulation, enabling enhanced ...
Myeongsoo Kim +5 more
wiley +1 more source
IET Signal Processing, 2022 To protect the satellite communication uplink signal (SCUS) from being intercepted by an eavesdropper, this study proposes several tactics to ensure SCUS being in the low probability of intercept (LPI) state.
Fei Wang +4 more
doaj +1 more source
Advanced Materials, EarlyView.This review highlights the potential of 2D‐2D heterostructures (HRs) in advancing monovalent ion‐based energy storage. It examines their role in tailoring charge interactions mechanisms, optimizing interfacial properties, and overcoming the limitations of individual layered materials.
Neetu Bansal +6 more
wiley +1 more source