Zobrazeno 1 - 10
of 2 611
pro vyhledávání: '"radar cross-section (RCS)"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract This study proposes and experimentally validates a multifunctional, ultra-wideband polarization conversion metasurface. The design integrates polarization conversion and electromagnetic scattering functions into a single structure, enabling
Externí odkaz:
https://doaj.org/article/8cd046bae97d4f69b0bbdf9fe21c44f5
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract The work report on architecture of integrated frequency selective meta-surface (IFSMS) absorbers for aerospace stealth applications. Fabricated IFSMS comprised of a pattern metasurface integrated with dielectric interlayer and conducting gro
Externí odkaz:
https://doaj.org/article/b54ae113c04b40e5aec2da29cf49ad5e
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 24, Iss 5, Pp 458-466 (2024)
In this paper, a hybrid checkerboard metasurface is proposed for controlling radar cross-sections (RCSs) using a small number of active devices. The proposed metasurface consists of passive and active artificial magnetic conductors. The passive metas
Externí odkaz:
https://doaj.org/article/454132afdc1e4e2481b7cbc659b830e2
Publikováno v:
Nanophotonics, Vol 13, Iss 19, Pp 3737-3748 (2024)
Retroreflectors can scatter the arbitrarily incident wave back to incoming direction, demonstrating great potential in wireless communication. However, there are limitations in adaptive retroreflection and polarization modulation with the existing re
Externí odkaz:
https://doaj.org/article/188270471fbc4953b1925fbdbec38acf
Autor:
ZHAO Qijun
Publikováno v:
Hangkong gongcheng jinzhan, Vol 15, Iss 3, Pp 143-150 (2024)
High requirements have been placed on the stealth performance of armed helicopters during wartime missions，in order to reduce the probability of the helicopter being found during the task，based on geometric optics method and consistent diffractio
Externí odkaz:
https://doaj.org/article/89a771c6128f4c8d8d0410a8c059d0e8
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 6, Pp 1724-1733 (2024)
This paper presents wideband channel measurements for indoor Non-Line-of-Sight (NLoS) fixed links operating at sub-Terahertz (sub-THz) frequencies (92.110 GHz) with single scattered reflections. Seemingly “smooth” surfaces generate substantial in
Externí odkaz:
https://doaj.org/article/256ec2550b594ca6bc322edd9c001751
Autor:
Adibuzzaman Rahi, Chris Cardoza, Sri Sai Teja Vemulapalli, Ehsan Malekipour, Hazim El-Mounayri, Hatem Wasfy, Tamer Wasfy, Sohel Anwar
Publikováno v:
IEEE Access, Vol 12, Pp 127836-127845 (2024)
Rigorous testing of automotive sensors for accuracy and precision is essential before finalizing designs and proceeding with mass production. This testing process plays a crucial role in identifying these sensors’ potential shortcomings, which are
Externí odkaz:
https://doaj.org/article/a3336c81b9854397be1860f37e85d0e1
Publikováno v:
IEEE Access, Vol 12, Pp 27887-27894 (2024)
An optically transparent chessboard metasurface is proposed to achieve wideband radar cross section (RCS) reduction in this paper. The metasurface is a single-layer sandwich structure composed of indium-tin-oxide (ITO) square patches with different s
Externí odkaz:
https://doaj.org/article/f22b0fb22e0c4d80aa74cf7d777166ce
Publikováno v:
IEEE Access, Vol 12, Pp 26196-26211 (2024)
This paper develops a novel stochastic geometry model to investigate design tradeoffs in a large-scale radar-aided millimeter-wave cellular network to eliminate the beam training overhead. In the proposed system, each base station comprises two sub-s
Externí odkaz:
https://doaj.org/article/2a2534680e3a437e9a1652818389a7d9
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 3078-3090 (2024)
Incoherent backscattering of mm-waves from natural rough surfaces is considered. A novel method is proposed to determine the statistical properties of surface scattering from range profile measurements. The method is based on modeling the road surfac
Externí odkaz:
https://doaj.org/article/b41fc3656d114073bc4b7ec1b9a6e06d