Results 81 to 90 of about 3,505 (206)

Optical frequency modulated continuous wave (FMCW) range and velocity measurements

open access: yes, 2001
By using a tunable laser diode and fiber components small compact ranging and radial velocity measuring systems can be realized utilizing a frequency modulating continuous wave (FMCW) technique.
Nordin, Daniel,
core  

Illuminating Advances in Materials: Optical Physical Unclonable Functions for Security Applications

open access: yesAdvanced Optical Materials, Volume 13, Issue 29, October 13, 2025.
This review highlights Optical Physical Unclonable Functions (OPUFs) as secure, light‐driven authentication tools. It surveys material platforms including optical fibers, low‐dimensional materials, luminophores, plasmonic nanoparticles and rare earth OPUFs systems.
Syeda Ramsha Ali   +4 more
wiley   +1 more source

GAN-Based Driver’s Head Motion Using Millimeter-Wave Radar Sensor

open access: yesIEEE Access
The recognition of driver behavior is critical for enhancing road safety, with a particular focus on monitoring driver attention. Radar-based recognition systems offer distinct advantages over traditional computer vision methods, including enhanced user ...
Hong Nhung Nguyen, Yong-Hwa Kim
doaj   +1 more source

Modelling and Analysis of Vector and Vector Vortex Beams Reflection for Optical Sensing

open access: yesPhotonics
Light Detection and Ranging (LiDAR) sensors can precisely determine object distances using the pulsed time of flight (TOF) or amplitude-modulated continuous wave (AMCW) TOF methods and velocity using the frequency-modulated continuous wave (FMCW ...
Wangke Yu, Jize Yan
doaj   +1 more source

Focusing Bistatic FMCW SAR Signal by Range Migration Algorithm Based on Fresnel Approximation

open access: yesSensors, 2015
Frequency modulated continuous wave (FMCW) technique has recently been employed by synthetic aperture radar (SAR) to decrease the radar cost and volume. However, the operation range is limited by the direct energy leakage from the transmitting channel to
Yake Li, Siu O’Young
doaj   +1 more source

Terahertz Imaging with Frequency Modulated Continuous Wave (FMCW) Radar

open access: yesThe Review of Laser Engineering, 2022
Chiko OTANI   +2 more
openaire   +1 more source

Design Considerations for Integrated Radar Chirp Synthesizers

open access: yesIEEE Access, 2019
Phase-locked loops (PLLs) effectively generate frequency chirps for frequency-modulated continuous-wave (FMCW) radar and are ideal for integrated circuit implementations.
Daniel Weyer   +6 more
doaj   +1 more source

Parameter Estimation of Frequency Modulated Continuous Wave (FMCW) Radar Signal Using Wigner-Ville Distribution and Radon Transform

open access: yes, 2014
ME, ECEDFeature extraction algorithm for a time-frequency method based on Wigner-Ville Distribution (WVD) is used for detection and parameter estimation of Frequency Modulated Continuous Wave (FMCW) radar signal.
Kumar, Sudhir
core  

Microwave Imaging for Breast Cancer Detection - A Comparison Between VNA and FMCW Radar

open access: yesIEEE Journal of Microwaves
This paper presents the comparison between microwave imaging for breast cancer detection using a vector network analyzer (VNA) and a frequency-modulated continuous wave (FMCW) radar system.
Martin Maier   +6 more
doaj   +1 more source

Integrated Vessel Traffic Control System [PDF]

open access: yesTransNav, 2012
Paper describes Integrated Vessel Traffic Control System realizing fusion of data received from the shore based station of the Automatic Identification System (AIS) and pulse and Frequency Modulated Continuous Wave (FMCW) radars and presenting ...
Marek Kwiatkowski   +3 more
doaj  

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