Results 41 to 50 of about 2,074 (186)

Binary-Phase vs. Frequency Modulated Radar Measured Performances for Automotive Applications

Sensors, 2023
Radars have been widely deployed in cars in recent years, for advanced driving assistance systems. The most popular and studied modulated waveform for automotive radar is the frequency-modulated continuous wave (FMCW), due to FMCW radar technology’s ease
Mattia Caffa, Francesco Biletta, Riccardo Maggiora   +2 more
doaj   +1 more source

FMCW radar with broadband communication capability [PDF]

2007 European Radar Conference, 2007
The use of amplitude modulation to encode information onto an FMCW radar signal is proposed in this paper. This new technique, that has been named AM-FMCW communicating radar, provides a new channel for broadband communication by reusing the radar frequencies and without introducing any distortion in the radar functionality.
Barrenechea, P., Elferink, F.H., Janssen, J.A.A.J.   +2 more
openaire   +1 more source

Seismo‐Acoustic Characterization and Array Processing of Dry‐ and Wet‐Snow Avalanches

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 7, July 2026.
Abstract Snow avalanches generate complex seismic and infrasound signals influenced by terrain, snow properties, flow regime, and avalanche size. In this controlled field study, we analyzed the seismo‐acoustic characteristics of three avalanches that released along the same path in the Dischma valley above Davos, Switzerland.
Christine Seupel, Cristina Pérez‐Guillén, Andreas Fichtner, Alec van Herwijnen   +3 more
wiley   +1 more source

Advancements in Key Parameters of Frequency-Modulated Continuous-Wave Light Detection and Ranging: A Research Review

Applied Sciences
As LiDAR technology progressively advances, the capability of radar in detecting targets has become increasingly vital across diverse domains, including industrial, military, and automotive sectors.
Zibo Wu, Yue Song, Jishun Liu, Yongyi Chen, Hongbo Sha, Mengjie Shi, Hao Zhang, Li Qin, Lei Liang, Peng Jia, Cheng Qiu, Yuxin Lei, Yubing Wang, Yongqiang Ning, Jinlong Zhang, Lijun Wang   +15 more
doaj   +1 more source

On‐Chip Saturated Absorption of CO2 in a Silicon‐on‐Sapphire Waveguide

Advanced Optical Materials, Volume 14, Issue 24, 25 June 2026.
We demonstrate the first saturated absorption of a molecular gas on a planar photonic chip. By coupling carbon dioxide with the tightly confined light of a silicon‐on‐sapphire waveguide, we achieve optical saturation using only milliwatt powers. This breakthrough provides a practical, low‐power foundation for creating ultra‐compact mid‐infrared ...
Shahar Edelstein, Noa Mazurski, Uriel Levy   +2 more
wiley   +1 more source

Strategies for FMCW radars

2009 9th International Conference on Intelligent Transport Systems Telecommunications, (ITST), 2009
In this paper, we present a comparison of two strategies for FMCW radars. The potential presence of multiple targets implies using specific waveforms for beat frequencies association. Here, we compare performance of two such waveforms in terms of targets distance and velocity estimation.
Bazzi, Ali, Chonavel, Thierry, Kärnfelt, Camilla, Peden, Alain, Bodereau, Frantz   +4 more
openaire   +2 more sources

Modeling FMCW Radar for Subsurface Analysis

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Determining subsurface properties through ground penetrating radar sounding can be challenging, especially in planetary exploration, where little is known about the terrain and additional observations are limited. Analysis and interpretation of data acquired with the Radar Imager for Mars’ Subsurface Experiment (RIMFAX) could therefore be ...
Sigurd Eide, Titus Casademont, Øyvind Aardal, Svein-Erik Hamran   +3 more
openaire   +4 more sources

Lithium Niobate Quadratic Integrated Nonlinear Photonics: Enabling Ultra‐Wide Bandwidth and Ultrafast Photonic Engines

Nanophotonics, Volume 15, Issue 9, 13 May 2026.
This perspective surveys emerging quantum and classical photonic applications across operating wavelengths and timescales, highlighting persistent technological gaps in integrated light sources. We examine the unique advantages of quadratic nonlinear photonics on the thin‐film lithium niobate (TFLN) platform and discuss strategies for realizing ...
Meng Tian, Guanyu Han, Ziyao Feng, Yu Liu, Yu Wang, Wenjun Deng, Ayed Al Sayem, Qiushi Guo   +7 more
wiley   +1 more source

First Triple‐Frequency Retrievals of Binned Raindrop Size Distributions

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Our understanding of raindrop size distributions (DSDs) aloft is largely limited, owing to a scarcity of effective measurements. In this study, a two‐step optimal estimation technique is developed for retrieving binned DSDs based on a newly developed vertically‐pointing triple‐frequency radar system. In the first step, we employ the Tridon and
Fuxin Yao, Haoran Li, Yang Zhang, Zheng Ruan, Liping Liu, Nan Wei, Yan Feng, Yong Huang   +7 more
wiley   +1 more source

Research on Frequency Modulated Continuous Wave (FMCW) Lidar Equation Based on Optical Mixing

Applied Sciences
Frequency Modulated Continuous Wave (FMCW) lidar exhibits excellent anti-interference capabilities and efficient range and velocity measurement performance. Operating range is a crucial metric for FMCW lidar systems.
Bowen Yang, Chunsheng Sun, Jingbo Sun
doaj   +1 more source