Results 91 to 100 of about 1,794 (207)

Evaluating the Scalability of Soft Foreign Object Detection in Dry Foods Using Sub-Terahertz Radar and Deep-learning techniques

This study evaluates the scalability of using sub-terahertz (THz) radar-based deep-learning techniques for automatically detecting soft foreign objects in dry foods.
Song, Seungeon, Kim, Youngduk, Lee, Jonghun, Kwak, Donghoon   +3 more
core   +1 more source

Terahertz Radar and Deep Learning-Based Detection of Soft Foreign Objects in Food Products: An Automatic Inspection Approach

, 2023
This study investigates the feasibility of an automatic detection system for foreign objects in food using terahertz radar and deep learning techniques.
Song, Seungeon, Kim, Youngduk, Lee, Jonghun, Kwak, Donghoon   +3 more
core   +1 more source

New Vacuum Electronic Devices for Radar

Leida xuebao, 2016
Vacuum Electronic Devices (VEDs) which are considered as the heart of a radar system, play an important role in their development. VEDs and radar systems supplement and promote each other.
Hu Yinfu, Feng Jinjun
doaj   +1 more source

Sub-terahertz transmissive reconfigurable intelligent surface for integrated beam steering and self-OOK-modulation

Light: Science & Applications
Boasting superior flexibility in beam manipulation and a simpler framework than traditional phased arrays, terahertz metasurface-based phased arrays show great promise for 5G-A/6G communication networks.
Dongfang Shen, Feng Lan, Luyang Wang, Tianyang Song, Munan Yang, Tianyu Hu, Yueting Li, Xiaolei Nie, Jiayao Yang, Shixiong Liang, Hongxin Zeng, Hui-Fang Zhang, Pinaki Mazumder, Ziqiang Yang, Yaxin Zhang, Tie Jun Cui   +15 more
doaj   +1 more source

A multi-scale spatial-frequency double branch network for terahertz ISAR image target classification

Defence Technology
Inverse synthetic aperture radar (ISAR), as the core technology of high-resolution radar imaging, has significant application value in fields of marine monitoring, air reconnaissance and space target recognition due to its all-weather and long-range ...
Qiuyan Wang, Wanting Chen, Yinwei Li, Jixiang Fu, Hongqiang Wang, Yiming Zhu, Mengdao Xing   +6 more
doaj   +1 more source

Radar Cross Section Measurements of Frequency Selective Terahertz Retroreflectors

, 2020
The radar cross section of spherical retroreflectors operating at terahertz frequencies is investigated. Several spherical retroreflectors with diameters ranging from 2 mm to 8 mm were fabricated and their radar cross section was measured at 100 GHz, 160
Richard J Williams, Thomas M Goyette, Andrew J Gatesman, Robert H Giles   +3 more
core  

Millimeter Wave Substrate Integrated Waveguide Antennas: Design and Fabrication Analysis [PDF]

, 2009
The paper presents a new concept in antenna design, whereby a photo-imageable thick-film process is used to integrate a waveguide antenna within a multilayer structure. This has yielded a very compact, high performance antenna working at high millimeter-
Izqueirdo, B, Henry, M., Sanz-Izquierdo, Benito, Young, P, Free, C.E., Young, Paul R., Batchelor, John C., Henry, M, Batchelor, J, Free, C E   +9 more
core   +1 more source

Electromagnetic Scattering Characteristics of Fractal Rough Coated Objects in the Terahertz Range

Leida xuebao, 2018
Based on the physical optics method, the scattering characteristics of fractal rough surface coated objects are studied in the terahertz (THz) range herein. A blunt model based on fractal rough surfaces is built.
Zhao Hua, Guo Lixin
doaj   +1 more source

Terahertz bistatic three-dimensional computational imaging of hidden objects through random media

Scientific Reports
Random media pose limitations on the imaging capability of photoelectric detection devices. Currently, imaging techniques employed through random media primarily operate within the laser wavelength range, leaving the imaging potential of terahertz waves ...
Quanchun Yu, He Cai, Xianli Zhu, Zihao Liu, Hongcheng Yin, Liangsheng Li   +5 more
doaj   +1 more source

FMCW THZ radar and X-ray analysis of wood properties: A comparative study [PDF]

Wood is a material valued for its mechanical properties and sustainability. It exhibits substantial variability in density due to its growth being influenced by the external environment.
MARC, Caroline, DENAUD, Louis, GIRARDON, Stéphane, MARCON, Bertrand   +3 more
core   +1 more source