Results 31 to 40 of about 2,074 (186)

Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows

IEEJ Transactions on Electrical and Electronic Engineering, Volume 21, Issue 9, Page 1390-1403, September 2026.
This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li, Ranran Wang, Fuyang Tian, Yudao Li, Zhuolin Wang, Yuxin Yu, Liping Ma, Xin Lu   +7 more
wiley   +1 more source

Design and implementation of radar transmitters for unmanned surveillance

Dianzi Jishu Yingyong
This article designs a transmitter system for unmanned surveillance radar, aiming to achieve efficient detection and accurate monitoring of the surveillance area. The transmitter system uses FMCW (Frequency Continuous Wave) radar technology, and its core
Li Yanxu, Chen Xingyu
doaj   +1 more source

Utilizing NASA's Operation IceBridge Airborne SWE and Precipitation Products to Assess Surface Snow Over Alaskan Glaciers

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Accurately estimating Snow Water Equivalent (SWE) in glacierized regions is critical for glacier modeling and mass balance analysis yet remains challenging due to sparse observations and uncertainties in precipitation products. The objectives are twofold: (a) assess how well three widely used precipitation datasets—Stage IV (a radar–gauge ...
Yang Song, Ali Behrangi
wiley   +1 more source

Multi-Band FMCW Signal Generator with a Tunable Sweep-Frequency Bandwidth and Inter-Band Interval

Photonics
In this work, we experimentally demonstrate a scheme for generating a multi-band FMCW signal with a tunable sweep bandwidth and inter-band interval. For such a scheme, an original FMCW signal is first acquired by directly current-modulating a master ...
Md Mamun-Ur-Rashid, Qiupin Wang, Xin Tong, Pu Ou, Guangqiong Xia, Zhengmao Wu   +5 more
doaj   +1 more source

Digital FMCW for ultrawideband spectrum sensing [PDF]

Radio Science, 2016
AbstractAn ultrawideband digital frequency‐modulated continuous wave sensing engine is proposed as an alternative technique for cognitive radio applications. A dual‐band demonstrator capable of sensing 750 MHz bandwidth in 204.8 µs is presented. Its performance is illustrated from both bench tests and from real‐time measurements of the GSM 900 band and
Cheema, A., Salous, S.
openaire   +3 more sources

Optical Phased Arrays on Photonic Integrated Circuit Platforms: Challenges, Opportunities, and Future Applications

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
Integrated optical phased arrays are emerging as scalable engines for solid‐state beam steering and programmable wavefront control. This Review maps the field from beam‐steering principles and core building blocks to material platforms, system‐level bottlenecks, and application frontiers, highlighting how heterogeneous integration, aperiodic ...
Jingwei Li, Yuyuan Han, Aoxiang Chen, Pengpeng Li, Xinglin Zhu, Guanbao Zhao, Luohan Peng, Huaibin Zheng   +7 more
wiley   +1 more source

Detection of Electronic Devices Using FMCW Nonlinear Radar

Sensors, 2022
Nonlinear radars can be utilized to detect electronic devices, which are difficult to detect with conventional radars due to their small radar cross sections (RCS).
Kyuho Cha, Sooyoung Oh, Hayoung Hong, Hongsoo Park, Sun K. Hong   +4 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Compressive Signal Processing for Estimating Range-Velocity-AoA in FMCW Radar Applications

IEEE Access
Frequency-modulated continuous wave (FMCW) radars are known to accurately estimate the parameters of targets with low-cost and low-power transceiver systems.
Eny Sukani Rahayu, Dyonisius Dony Ariananda, Risanuri Hidayat, Gabriel Daniel   +3 more
doaj   +1 more source

Analisis Pengolahan Sinyal Radar Frequency Modulated Continuous Wave untuk Deteksi Target

Jurnal Nasional Teknik Elektro, 2013
On this report has been simulated signal generation Frequency Modulated Continuous Wave (FMCW) radar to determine the distance and speed of the target. This design FMCW radar system for traffic management applications that monitor ground traffic.
Siska Aulia, Suhartono Tjondronegoro, Rahmadi Kurnia   +2 more
doaj   +1 more source