Results 41 to 50 of about 95,952 (309)

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

Advanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi, Norma Mallegni, Andrea Dorigato, Mario Milazzo   +3 more
wiley   +1 more source

Characterisation of Resident Space Objects and Synchronisation Error Compensation in Multistatic Interferometric Inverse Synthetic Aperture Radar Imaging

IET Radar, Sonar & Navigation
This article presents a study on interferometric inverse synthetic aperture radar (ISAR) for three‐dimensional imaging and rotational velocity estimation.
Manjunath Thindlu Rudrappa, Martin Käske, Marcus Albrecht, Peter Knott   +3 more
doaj   +1 more source

A Compact Maritime Harmonic Radar Antenna for Navigation and Search-and-Rescue

IEEE Access
This paper presents a compact dual-band dual-polarized slotted waveguide array antenna designed for a maritime harmonic search-and-rescue system. The harmonic radar transmits signals in the S-band and receives clutter-free signals in the C-band through ...
Taher Badawy, Thomas Bertuch, Peter Knott   +2 more
doaj   +1 more source

High resolution observations of spectral width features associated with ULF wave signatures in artificial HF radar backscatter [PDF]

, 2004
International audienceThe EISCAT high power heating facility at Tromsø, northern Norway, has been utilised to generate artificial radar backscatter in the fields of view of the CUTLASS HF radars.
Woodfield, E.E., Dhillon, R. S., J. A. Davies (4412452), Milan, S.E., T. K. Yeoman, R. S. Dhillon, L. J. Baddeley (7590143), D. M. Wright, E. E. Woodfield (7590071), E. E. Woodfield, Yeoman, T. K., Woodfield, E. E., J. A. Davies, Tim K. Yeoman (7583066), Davies, J.A., Milan, S. E., Wright, D.M., Lester, M., L. J. Baddeley, Wright, D. M., Steve E. Milan (7589666), M. Lester, R. Dhillon (7590146), M. Lester (7589660), Davies, J. A., S. E. Milan, D. M. Wright (7583069), Baddeley, L. J., Dhillion, R.S., Yeoman, T.K., Baddeley, L.J.   +30 more
core   +1 more source

Superresolution for high-frequency radar

IET Radar, Sonar & Navigation, 2007
High-frequency (HF) radars require large-array antennas to achieve narrow beamwidths and are required to discriminate targets with low Doppler shifts compared with microwave radar. Superresolution processing can discriminate signals at separations much less than the beamwidth or conventional Doppler bin width (or conversely, achieve a given minimum ...
openaire   +1 more source

Machine Learning‐Assisted Inverse Design of Soft and Multifunctional Hybrid Liquid Metal Composites

Advanced Functional Materials, EarlyView.
A machine learning framework is presented for inverse design of synthesizable multifunctional composites containing both liquid metal and solid inclusions. By integrating physics‐based modeling, data‐driven prediction, and Bayesian optimization, the approach enables intelligent design of experiments to identify optimal compositions and realize these ...
Lijun Zhou, Yunsik Ohm, Ren‐Mian Chin, Olivia Kerr, Krithika Manohar, Mohammad H. Malakooti   +5 more
wiley   +1 more source

Time transfer via single‐record TDoA measurements of GNSS satellites using direct cross‐correlation and relative pilot code phases

IET Radar, Sonar & Navigation
Radar systems are evolving towards distributed receiver networks. As individual stations might be separated too far to install a cable link, novel methods are required to synchronise individual data records in the time domain.
Erik Busley, Timotej Žuntar, Jörg Borgmann, Michael Krist   +3 more
doaj   +1 more source

Signal Processing Methods to Improve Ocean Surface Wave Estimation from a High Frequency Surface Wave Radar [PDF]

, 2011
High frequency surface wave radars are operated as a remote sensor to measure ocean surface parameters to ranges exceeding 200-300 km from the coastline.
Wang, Wei
core  

Multimodal Perception and Machine Learning‐Empowered Human Machine Interfaces With Double‐Network Hydrogel Fibers

Advanced Functional Materials, EarlyView.
This work develops polyacrylamide‐alginate (PAM‐Alg) double‐network hydrogel fibers for multimodal perception and intelligent human‐machine interfaces. The covalent‐ionic network provides high strength, toughness, and stable conductivity. Easily woven into wearables and integrated with soft robots, the fibers enable object and temperature recognitions ...
Yujue Yang, Minyu Qiu, Di Tan, Xinlong Liu, Junze Zhang, Ziyu He, Jing Han, Yuanyuan Gao, Zihua Li, Hong Fu, Bingang Xu   +10 more
wiley   +1 more source

Characterization of a Time Transfer Channel Between a Narrow-Band Transponder on a GEO Satellite and a Ground-Based Station

Sensors
Time synchronization and positioning of bistatic radar transceivers is required to coordinate and meaningfully merge the measurements made between them. It simultaneously allows the radar transceivers to change their position throughout time.
Ferran Valdes Crespi, Pol Barrull Costa, Angel Slavov, Matthias Weiß, Peter Knott   +4 more
doaj   +1 more source