{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T01:35:17Z","timestamp":1767836117979,"version":"3.49.0"},"reference-count":44,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2023,11,26]],"date-time":"2023-11-26T00:00:00Z","timestamp":1700956800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["41774118"],"award-info":[{"award-number":["41774118"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["2021JDJQ0022"],"award-info":[{"award-number":["2021JDJQ0022"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Distinguished Young Scholars Program of Sichuan","award":["41774118"],"award-info":[{"award-number":["41774118"]}]},{"name":"Distinguished Young Scholars Program of Sichuan","award":["2021JDJQ0022"],"award-info":[{"award-number":["2021JDJQ0022"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>We propose a method to enhance the accuracy of arrival time picking of noisy microseismic recordings. A series of intrinsic mode functions (IMFs) of the microseismic signal are initially decomposed by employing the ensemble empirical mode decomposition. Subsequently, the sample entropy values of the obtained IMFs are calculated and applied to set an appropriate threshold for selecting IMFs. These are then reconstructed to distinguish between noise and useful signals. Ultimately, the Akaike information criterion picker is used to determine the arrival time of the denoised signal. Test results using synthetic noisy microseismic recordings demonstrate that the proposed approach can significantly reduce picking errors, with errors within the range of 1\u20133 sample intervals. The proposed method can also give a more stable picking result when applied to different microseismic recordings with different signal-to-noise ratios. Further application in real microseismic recordings confirms that the developed method can estimate an accurate arrival time of noisy microseismic recordings.<\/jats:p>","DOI":"10.3390\/s23239421","type":"journal-article","created":{"date-parts":[[2023,11,27]],"date-time":"2023-11-27T03:48:17Z","timestamp":1701056897000},"page":"9421","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Reliable Denoising Strategy to Enhance the Accuracy of Arrival Time Picking of Noisy Microseismic Recordings"],"prefix":"10.3390","volume":"23","author":[{"given":"Xiaohui","family":"Zhang","sequence":"first","affiliation":[{"name":"Key Laboratory of Earth Exploration and Information Technology, Chengdu University of Technology, Ministry of Education, Chengdu 610059, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8163-2699","authenticated-orcid":false,"given":"Huailiang","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China"}]},{"given":"Wenzheng","family":"Rong","sequence":"additional","affiliation":[{"name":"Key Laboratory of Earth Exploration and Information Technology, Chengdu University of Technology, Ministry of Education, Chengdu 610059, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,11,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"105366","DOI":"10.1016\/j.tust.2023.105366","article-title":"Microseismic monitoring and experimental study on rockburst in water-rich area of tunnel","volume":"141","author":"Tang","year":"2023","journal-title":"Tunn. 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