Results 81 to 90 of about 141,810 (209)

Wideband absorptive frequency‐selective reflector based on split‐ring resonator embedded with chip resistor

Electronics Letters
Here, a wideband absorptive frequency‐selective reflector (AFSR) based on a split‐ring resonator (SRR) embedded with chip resistors is proposed. The wide absorption band is achieved by the multimode resonances of two dipoles, and the insertion of SSRs is
Bingyan Zhou, Binchao Zhang, Baihong Chi, Cheng Jin   +3 more
doaj   +1 more source

Narrowband Radar Micromotion Targets Recognition Strategy Based on Graph Fusion Network Constructed by Cross-Modal Attention Mechanism

Remote Sensing
In the domain of micromotion target recognition, target characteristics can be extracted through either broadband or narrowband radar echoes. However, due to technical limitations and cost constraints in acquiring broadband radar waveform data ...
Yuanjie Zhang, Ting Gao, Hongtu Xie, Haozong Liu, Mengfan Ge, Bin Xu, Nannan Zhu, Zheng Lu   +7 more
doaj   +1 more source

User's manual for three dimensional FDTD version A code for scattering from frequency-independent dielectric materials [PDF]

The Penn State Finite Difference Time Domain (FDTD) Electromagnetic Scattering Code Version A is a three dimensional numerical electromagnetic scattering code based on the Finite Difference Time Domain technique.
Beggs, John H., Kunz, Karl S., Luebbers, Raymond J.   +2 more
core   +1 more source

Plane wave diffraction by a semi‐infinite parallel‐plate waveguide with partial material loading: The case of H polarisation

IET Microwaves, Antennas & Propagation
The analysis of diffraction by a semi‐infinite parallel‐plate waveguide with partial material loading is rigorously carried out using the Wiener–Hopf technique for the H‐polarised plane wave incidence.
Tong Zhang, Kazuya Kobayashi
doaj   +1 more source

Novel Electromagnetic-Based Radar Propagation Model for Vehicular Sensing

IEEE Access
With the increased carrier frequencies envisioned for future radar and communication systems, transmissions in the near-field propagation region have raised an increased interest. In order to evaluate the performance of such systems, accurate propagation
Francois De Saint Moulin, Khaldoun Al Khalifeh, Christophe Craeye, Luc Vandendorpe, Claude Oestges   +4 more
doaj   +1 more source

Skylab S193 and the analysis of the wind field over the ocean [PDF]

, 1972
The present status of the program to provide proof of concept for the idea that simultaneously observed radar scattering cross section measurements and passive microwave measurements can be used to determine the winds in the planetary boundary layer over
Pierson, W. J., Jr.
core   +1 more source

Plane Wave Diffraction by a Finite Parallel‐Plate Waveguide Cavity With Perfect Electric Conductor Loading: The Case of H Polarization

IET Microwaves, Antennas & Propagation
This work presents a rigorous analysis of H‐polarised wave diffraction by a finite parallel‐plate waveguide cavity with perfect electric conductor loading, employing the Wiener‐Hopf technique.
Tong Zhang, Kazuya Kobayashi
doaj   +1 more source

The Weather Radar as a Tool for Collecting Quantitative Data on Migrating Birds

IEEE Journal of Microwaves
Radar observations have an important role in surveying bird migrations and the multifaceted links they have with human activities and environmental changes.
Roberto Nebuloni, Carlo Capsoni
doaj   +1 more source

A low radar cross section antenna array based on a liquid metal metasurface

IET Microwaves, Antennas & Propagation
A low RCS (radar cross section) slot array antenna based on a liquid metal metasurface is proposed. The metasurface consists of 6 × 6 nested ring‐shaped element.
Lu‐Yang Ji, Xiaoyue Hong, Rui Yang, Qingyue Liu, Wenhan Zhang   +4 more
doaj   +1 more source

Noise Parameters of CW Radar Sensors Used in Active Defense Systems [PDF]

, 2012
Active defense represents an innovative way of protecting military vehicles. It is based on the employment of a set of radar sensors which detect an approaching threat missile and activate a suitable counter-measure.
Hudec, P., Jenik, V., Panek, P.
core   +1 more source