Results 81 to 90 of about 5,131 (237)

Cognitive radar for waveform diversity utilization

open access: yes, 2021
S.218-223In this paper we discuss the relationship between cognitive radar and waveform diversity. The cognitive decision-making process selects the most appropriate waveform from the available set of diverse waveforms based on a perception of the ...
Martone, Anthony F.   +3 more
core   +1 more source

Probabilistic estimation of reliable sensor spacing for wire break detection in prestressed concrete using acoustic emission technique

open access: yesStructural Concrete, EarlyView.
Abstract The acoustic emission (AE) technique has proven to be an effective method for detecting individual wire breaks in prestressed concrete structures affected by stress corrosion cracking (SCC). However, despite its widespread application, the quantitative assessment of AE monitoring reliability and optimal sensor placement remains unresolved ...
Max Fiedler, Steffen Marx
wiley   +1 more source

Target recognition techniques for multifunction phased array radar

open access: yes, 2010
This thesis, submitted for the degree of Doctor of Philosophy at University College London, is a discussion and analysis of combined stepped-frequency and pulse-Doppler target recognition methods which enable a multifunction phased array radar designed
French, A.
core  

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

open access: yesIEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
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   +7 more
wiley   +1 more source

Waveforms design for modern radar: the chirp signal fifty + years later [PDF]

open access: yes, 2014
The optimal design of chirp radar waveforms has to satisfy conflicting requirements. Optimal solutions for different values of the compression ratio are considered, evaluated and compared with each other.
De Palo, F.   +5 more
core  

MIMO Radar Ambiguity Optimization Using Frequency-Hopping Waveforms [PDF]

open access: yes, 2007
Recently, the concept of MIMO (multiple-input-multiple- output) radars has drawn considerable attention. In traditional SIMO (single-input-multiple-output) radar, the transmitters emit coherent waveforms to form a focused beam.
Chen, Chun-yang   +3 more
core   +1 more source

Calculating the Interconnection Limit from a Comprehensive Voltage Evaluation for Distribution Systems with Large Distributed Energy Resources

open access: yesIEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
Japan is pursuing power source decarbonization and is thus reducing fuel‐based thermal power generation while promoting renewable energy resource use. Given the expected power fluctuations, this transition will require novel voltage management and control methods.
Satoshi Uemura   +2 more
wiley   +1 more source

Phase coded waveforms for integrated sensing and communication systems

open access: yesIET Radar, Sonar & Navigation
Nowadays, especially with the developments in the automotive industry, it has become a highly popular topic for radar and communication systems to operate on the same platform and perform joint tasks to increase situational awareness.
Sevda Şahin, Tolga Girici
doaj   +1 more source

Single Carrier-Frequency Division Multiple Access Radar: Waveform Design and Analysis

open access: yesIEEE Access, 2020
This paper proposes Single Carrier-FDMA radar, which is not only a solution to the shortcomings of OFDM radars but also offers improved Ambiguity Function and autocorrelation properties.
Rahat Saadia, Noor M. Khan
doaj   +1 more source

A perspective on automated rapid eye movement sleep assessment

open access: yesJournal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Rapid eye movement sleep is associated with distinct changes in various biomedical signals that can be easily captured during sleep, lending themselves to automated sleep staging using machine learning systems. Here, we provide a perspective on the critical characteristics of biomedical signals associated with rapid eye movement sleep and how ...
Mathias Baumert, Huy Phan
wiley   +1 more source

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