Grain size characterization by laser-based ultrasonics based on the centroid frequency shift method
Sign Up to like & getrecommendations! Published in 2019 at "Materials Characterization"
DOI: 10.1016/j.matchar.2019.109800
Abstract: Abstract To solve such problems as the sensitivity of ultrasonic attenuation method for grain size evaluation to geometric spreading, reflection and transmission effects, and the accuracy of ultrasonic echo amplitude measurements, this paper addresses the… read more here.
Keywords: grain size; centroid frequency; grain; method ... See more keywords
Extraction of the GPR instantaneous centroid frequency based on the envelope derivative operator and ICEEMDAN
Sign Up to like & getrecommendations! Published in 2023 at "Remote Sensing Letters"
DOI: 10.1080/2150704x.2023.2215942
Abstract: ABSTRACT The instantaneous centroid frequency attribute describes how the main frequency changes with the ground-penetrating radar (GPR) signal propagating in the subsurface medium. In this letter, we present a new approach for extracting the instantaneous… read more here.
Keywords: instantaneous centroid; frequency; iceemdan; envelope derivative ... See more keywords
Loss Tangent Estimation From GPR Data in Complex Medium Scenarios Using Amplitude and Power Spectrum Centroid Frequency Shift Methods
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2023.3272795
Abstract: Electromagnetic (EM) losses estimation in complex scenarios lacking subsurface continuous reflectors is challenging. We present here a robust approach based on the centroid frequency shift method and Ricker wavelet as the input signal, to compute… read more here.
Keywords: frequency shift; centroid frequency; gpr data; loss tangent ... See more keywords