Fuzzy rules of sound speed influence on ultrasonic sensing in outdoor environments

V Nicolau, C Miholca, M Andrei - 2009 3rd International …, 2009 - ieeexplore.ieee.org
The sound speed is affected by changes in the air properties, such as temperature,
pressure, humidity, gas composition, and air turbulence. It has direct influence on the …

A fast firing binaural system for ultrasonic pattern recognition

F Moita, AC Lopes, U Nunes - Journal of Intelligent and Robotic Systems, 2007 - Springer
A binaural sonar configuration with capability to detect and identify walls, edges and corners
on real-time is presented in this work. A new multi-echo ultra-fast firing method increases the …

[BOOK][B] Dependency of correlative ultrasonic measurement upon transducer's orientation

H Elmer, H Schweinzer - 2003 - ieeexplore.ieee.org
The pulse compression method adds several improvements to ultrasonic distance
measurement systems. Especially in conjunction with the one bit correlation method, which …

Neural Estimator of Sound Speed in Air for Ultrasonic Sensing in Manufacturing Environments

V Nicolau, M Andrei, G Petrea - 2022 IEEE 9th Electronics …, 2022 - ieeexplore.ieee.org
The influence of air characteristics on the sound speed is well known, and this can affect the
accuracy and performance of ultrasonic (US) sensors. The supposition of constant sound …

Sound speed estimation using fuzzy logic approach for outdoor ultrasonic applications

V Nicolau - New Concepts and Applications in Soft Computing, 2013 - Springer
The accuracy of sound speed estimation has direct influence on performance of ultrasonic
sensing applications, like those based on the distance measuring and the sound …

Me-eeruf um sistema de detecção e classificação de reflectores usando ultra-sons

FD Moita - 2002 - estudogeral.uc.pt
Nesta tese, é apresentado o desenvolvimento e modelaçao de uma configuraçao de
sensores de ultra-sons com capacidade para detectar e identificar reflectores do tipo: plano …