Results 91 to 100 of about 7,122,692 (304)

Copper Electroplated TPMS Polymer Lattices for Lightweight Absorption Dominant Electromagnetic Interference Shielding

Advanced Materials Technologies, EarlyView.
Copper electroplating transforms lightweight 3D‐printed TPMS polymer lattices into effective electromagnetic shields. Topology, relative density, and conductive seed layer continuity govern copper penetration, electrical resistance, and attenuation. SEA consistently exceeds SER, while 35% RD Diamond lattice gives the best performance, reaching 48.72 dB
Aman Al Khatib, Fares AlAwwa, Naod Mogos, Abdallah Kamal, Kin Liao, Marwan El Rich, Wael Zaki   +6 more
wiley   +1 more source

The Radiometric Measurement Quantity for SAR Images [PDF]

, 2013
A Synthetic Aperture Radar (SAR) system measures among other quantities the terrain radar reflectivity. After image calibration, the pixel intensities are commonly expressed in terms of radar cross sections (for point targets) or as backscatter ...
Döring, Björn, Schwerdt, Marco
core   +1 more source

Surface‐Spin‐Induced Magnetic Loss Enhancement in Ultralight Electromagnetic Absorbers

Advanced Science, EarlyView.
Fe3O4 nanoparticles with different hollow rates were synthesized to demonstrate the key role of surface moment in magnetic loss process. Using the same volume filling ratio, the 54.1% hollow Fe3O4 absorber represents about 20% enhancement in the imaginary part (μ'') than solid particles due to the coexisting magnetic resonance of inside and outside ...
Ruimin Ren, Ke Yang, Chichong Lu, Song Ma, Bowen Zheng, Zhenhui Ma   +5 more
wiley   +1 more source

A multifunctional broadband receiver for bistatic X-band radar measurements

, 2022
S.918-922This paper presents the multifunctional use of a developed dual-channel broadband receiver for bistatic radar applications. Modern broadband receivers integrate more and more functionality due to their increased performance.
Duk, V., Kohler, M., Bringmann, O., Brodowski, W., Worms, J., Weiss, M., O'Hagan, D.   +6 more
core   +1 more source

A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks

Advanced Science, EarlyView.
Conceptual illustration of a Global Ecosystem Methane Observing System (GEM‐OS) integrating satellites, aircraft, atmospheric networks, and ecosystem measurements to quantify methane emissions from anthropogenic and natural sources. The multi‐scale observing framework improves source attribution, reduces uncertainty in regional methane budgets, and ...
P. Ciais, S. Peng, J. Chang, F. Li, Q. Zhu, K. Yuan, G. Hugelius, H. Li, Y. Cai, F. Chevallier, K. Tibrewal, E. A. Kort, K. Arndt, J. Watts, B. Buma, N. Besic, P. I. Palmer, H. Cadillo‐Quiroz, E. Euskirchen, M. J. Gondwe, A. Hoyt, R. Jackson, S. Malone, D. Monteverde, S. Natali, M. Ramonet, C. Rey‐Sanchez, L. B. Sagang, E. A. G. Schuur, R. Vargas, R. Varner, Z. Zhang, B. Poulter   +32 more
wiley   +1 more source

Performance Analysis of Ship Wake Detection on Sentinel-1 SAR Images

Remote Sensing, 2017
A novel technique for ship wake detection has been recently proposed and applied on X-band Synthetic Aperture Radar images provided by COSMO/SkyMed and TerraSAR-X.
Maria Daniela Graziano, Marco Grasso, Marco D’Errico   +2 more
doaj   +1 more source

Photo‐Gated Corona Microfluidics

Advanced Science, EarlyView.
Photo‐gated corona microfluidics decouples optical programming from electric‐field actuation to enable reconfigurable manipulation on open, electrode‐pattern‐free surfaces. Near‐infrared irradiation locally melts paraffin, creating a reversible charge‐relaxation pathway that reconstructs the electric field.
Xiaxia Cui, Yiqing Liu, Xinyi Qiu, Manfei Liu, Biao Cheng, Yuan Zhou, Changguo Xue, Sheng Zhang, Xin Tang, Qiang Tang   +9 more
wiley   +1 more source

Advances in Meteorological Radar Technology and Applications at Chinese Academy of Meteorological Sciences

应用气象学报
The paper outlines research achievements of Chinese Academy of Meteorological Sciences (CAMS) in the development of new multi-band weather radar detection technologies, field experiments, radar data quality control, generation of secondary products ...
Liu Liping, Ruan Zheng, Wang Gaili, Hu Zhiqun, Wu Chong, Li Haoran, Zhang Yang, Bian Yuxuan   +7 more
doaj   +1 more source

L- and X-Band Multi-Temporal InSAR Analysis of Tianjin Subsidence

Remote Sensing, 2014
When synthetic aperture radar interferometry (InSAR) technology is applied in the monitoring of land subsidence, the sensor band plays an important role.
Qingli Luo, Daniele Perissin, Yuanzhi Zhang, Youliang Jia   +3 more
doaj   +1 more source

Radar spectrum opportunities for cognitive communications transmission [PDF]

, 2008
In relation to opportunistic access to radar spectrum, the impact of the radar on a communication system is investigated in this paper. This paper illustrates that by exploring the spatial and temporal opportunities in the radar spectrum and therefore ...
Williams, C, Joe McGeehan, Wang, L, Chris Williams, Angela Doufexi, McGeehan, JP, Doufexi, A, Lingfeng Wang   +7 more
core   +1 more source