A time–frequency analysis method of electromagnetic signal for coal and rock properties recognition while drilling based on CWT and GAPSO-ROA

•A time–frequency analysis method is proposed based on electromagnetic detection.•The electromagnetic signals of coal and rock while drilling are analyzed in-depth.•The concept of energy concentration is introduced as the objective function of CWT.•GAPSO-ROA is proposed to adaptively optimize the pa...

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Veröffentlicht in:	Measurement : journal of the International Measurement Confederation Jg. 253; S. 117447
Hauptverfasser:	Liu, Yang, Si, Lei, Wang, Zhongbin, Wei, Dong, Gu, Jinheng, Li, Xin, Dai, Jianbo
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Elsevier Ltd 01.09.2025
Schlagworte:	Coal and rock properties recognition Continuous wavelet transform Electromagnetic detection Hybrid swarm intelligence optimization algorithm Time–frequency analysis Coal and rock properties recognition Electromagnetic detection Hybrid swarm intelligence optimization algorithm Time–frequency analysis Continuous wavelet transform
ISSN:	0263-2241
Online-Zugang:	Volltext
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