Results 71 to 80 of about 1,755 (182)

Impact of Internal and External Interferences on the Performance of a FMCW Radar [PDF]

open access: yesTransNav, 2011
Although FMCW technology has become by now mature, there are still some unsolved problems left. First group of them are noise and distortion from own transmitter or receiver.
Pawel Paprocki
doaj  

New Design Antenna and Optimization of S‐Band Radar Networks Using CSRR Technology

open access: yesInternational Journal of RF and Microwave Computer-Aided Engineering, Volume 2026, Issue 1, 2026.
In this paper, a new design and analysis of a highly compact metamaterial antenna array for radar applications operating in the S‐band (2–4 GHz) is presented. To enhance the electrical and radiation characteristics of the proposed antenna, a slot was introduced into the radiating element, and a novel power divider was employed.
Hamza Ben Hamadi   +5 more
wiley   +1 more source

RIS-Enabled Self-Localization With FMCW Radar

open access: yesIEEE Transactions on Vehicular Technology
In the upcoming vehicular networks, reconfigurable intelligent surfaces (RISs) are considered as a key enabler of user self-localization without the intervention of the access points (APs). In this paper, we investigate the feasibility of RIS-enabled self-localization with no APs.
Hyowon Kim   +6 more
openaire   +2 more sources

What's Next for Snow: Insights From the NASA Terrestrial Hydrology Program Community Snow Meeting

open access: yesEarth's Future, Volume 13, Issue 12, December 2025.
Abstract Earth's snow cover strongly influences the climate system and represents an important resource for agricultural, industrial, and domestic water use. The last decade of snow‐focused research has improved our understanding of snow across scales. These efforts have culminated in new snow measurement instruments and methods, operational models for
Kate Hale   +9 more
wiley   +1 more source

Leveraging Sparse Autoencoders to Reveal Interpretable Features in Geophysical Models

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Machine learning is an increasingly popular tool in the geosciences, offering new approaches to numerical weather prediction and complex data set analysis. However, as reliance on these techniques grows, pressing questions about model transparency, internal biases, and trust emerge.
Fraser King   +4 more
wiley   +1 more source

Design of Dual-Mode Local Oscillators Using CMOS Technology for Motion Detection Sensors

open access: yesSensors, 2018
Recently, studies have been actively carried out to implement motion detecting sensors by applying radar techniques. Doppler radar or frequency-modulated continuous wave (FMCW) radar are mainly used, but each type has drawbacks.
Keum-Won Ha   +3 more
doaj   +1 more source

Hybrid LiDAR–radar at 9 μm wavelength with unipolar quantum optoelectronic devices

open access: yesNanophotonics, Volume 14, Issue 21, Page 3407-3413, 02 October 2025.
Abstract Unipolar quantum optoelectronics is emerging as a promising semiconductor platform for developing mid‐infrared applications, particularly spectroscopy and free‐space communications. In this work, we present a proof of principle of a unipolar quantum optoelectronic hybrid Lidar – Radar for the measurement of the position and speed of a moving ...
Livia Del Balzo   +9 more
wiley   +1 more source

Space scanning FMCW-based two-dimensional frequency diverse array radar

open access: yesThe Journal of Engineering, 2019
The frequency-modulated continuous wave (FMCW)-based frequency diverse array (FDA) radar concept is extended to two dimensions (2D). The radar operates as a linear pulsed FMCW/FDA in the transmission (TX) mode while it operates as a pulsed FMCW/phased ...
Savaş Karadağ   +2 more
doaj   +1 more source

A 145GHz FMCW-Radar Transceiver in 28nm CMOS.

open access: yes, 2019
Indoor radar applications detecting people, vital signs and minute gestures require a high range resolution. This paper presents a 145GHz FMCW radar transceiver with on-chip antennas in 28nm bulk CMOS. An RF bandwidth of 13GHz yields an 11mm range resolution, and the high RF carrier permits greater velocity and MIMO-angular resolution.
Visweswaran, Akshay   +7 more
openaire   +2 more sources

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