Results 21 to 30 of about 12,262 (174)
Intermediate frequency variation in long‐range FMCW radar for harmonics cancellation [PDF]
IET Radar, Sonar & Navigation, 2020 This study presents a technique for removing the inevitable harmonic distortions and intermodulation products that primary frequency‐modulated continuous wave (FMCW) radars inherently generate in the baseband. The required mixers and baseband amplifiers are non‐linear devices that introduce signal distortions, depending on the positions of targets in ...
Adrian Figueroa +2 more
openaire +1 more source
A Review of Insect Monitoring Approaches with Special Reference to Radar Techniques
Sensors, 2021 Drastic declines in insect populations are a vital concern worldwide. Despite widespread insect monitoring, the significant gaps in the literature must be addressed. Future monitoring techniques must be systematic and global.
Alexey Noskov +2 more
doaj +1 more source
Non-Contact Heart Rate Monitoring Based on Millimeter Wave Radar
IEEE Access, 2022 Millimeter Wave(mmWave) radar has been widely used in vital sign monitoring with non-contact and privacy protection. To reduce the effect of random body motion, respiration, and its harmonics on heart rate estimation, the heart rate monitoring based on ...
Zongquan Ling +4 more
doaj +1 more source
IET Radar, Sonar &Navigation, Volume 17, Issue 8, Page 1196-1212, August 2023., 2023 This work reports concepts for two cooperative active reflector tags (ARTs) for joint ranging and communication in a linear frequency modulated continuous wave secondary radar system along with corresponding theoretical derivations. The two low power, sensor enabled ARTs feature roll invariance and are based on 24 GHz integrated superregenerative ...
Manu Viswambharan Thayyil +3 more
wiley +1 more source
CARRADA Dataset: Camera and Automotive Radar with Range-Angle-Doppler Annotations
, 2021 High quality perception is essential for autonomous driving (AD) systems. To reach the accuracy and robustness that are required by such systems, several types of sensors must be combined. Currently, mostly cameras and laser scanners (lidar) are deployed
Newson, A. +4 more
core +2 more sources
Heartbeat information prediction based on transformer model using millimetre‐wave radar
IET Biometrics, Volume 12, Issue 4, Page 235-243, July 2023., 2023 Millimetre‐wave radar has a high ranging accuracy and can acquire the subtle vibration information of the human heart. In this paper, we propose a heartbeat prediction method based on the transformer model using millimetre‐wave radar. Abstract Millimetre‐wave radar offers high ranging accuracy and can capture subtle vibration information of the human ...
Bojun Hu +5 more
wiley +1 more source
Comparative Analysis of Mathematical Models of Tracking Radio Altimeters
Известия высших учебных заведений России: Радиоэлектроника, 2022 Introduction. Tracking radio altimeters of low altitudes are widely used in civil aviation. These devises use periodic frequency modulated continuous wave (FMCW) signals, while altitude measurements are based on processing the beat signal processing. For
A. A. Monakov, A. A. Tarasenkov
doaj +1 more source
IET Radar, Sonar &Navigation, Volume 16, Issue 3, Page 456-469, March 2022., 2022 Abstract Radar has been shown potentially to be used for non‐contact sensing of biosignals in a more comfortable and easier way than wearable and contact devices. By detecting and extracting body motions linked to physiological activities, accurate estimation of the heart rate is possible.
Wenyu Zhang, Gang Li, Zetao Wang, Hao Wu
wiley +1 more source
Contactless and short-range vital signs detection with doppler radar millimetre-wave (76-81 GHz) sensing firmware. [PDF]
Healthc Technol LettDoppler millimetre (mm)‐wave radar‐based contactless and short‐range measurement system for vital signs detection (heart rate and respiration rate) continuous monitoring. Abstract Vital signs such as heart rate (HR) and respiration rate (RR) are essential physiological parameters that are routinely used to monitor human health and bodily functions ...
Chen PY +5 more
europepmc +2 more sources
A polarization‐insensitive time‐modulated frequency‐selective surface for broad frequency range
IET Microwaves, Antennas &Propagation, Volume 16, Issue 1, Page 37-45, January 2022., 2022 Abstract Usually, Radar signature of an object is reduced using microwave absorber surface. Recently, another approach based on time‐modulated frequency‐selective surfaces has been developed to deceive Radar detection by selectively generating harmonics/sidebands.
Mondeep Saikia +2 more
wiley +1 more source