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Design and application of a Mini-SOSIE system

ZUBIN CHEN NA LI YADONGYANG ZHU YANFENG ZHANG YUN LONG XIAOZHE WEN FENG SUN*
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Key Laboratory of Geo-Exploration Instrumentation of Ministry of Education (Jilin University), Changchun 130061, P.R. China. sunfeng@jlu.edu.cn,
College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, P.R. China.,
JSE 2017, 26(6), 521–539;
Submitted: 28 September 2016 | Accepted: 16 September 2017 | Published: 1 December 2017
© 2017 by the Authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
Abstract

Chen, Z., Li, N., Zhu, Y., Zhang, Y, Long, Y., Wen, X. and Sun, F., 2017. Design and application of a Mini-SOSIE system. Journal of Seismic Exploration, 26: 521-539. The main objectives of this study were to (1) design and develop a Mini-SOSIE system, and (2) assess its performance at a test site. Mini-SOSIE is a light, portable, and nondestructive vibrator that is useful for shallow seismic exploration. During normal operation, the frequency of the vibrator is relatively periodic, leading the autocorrelation to have multiple peaks that affect the correlated shot record; i.e., there is strong interference and thus low resolution and signal-to-noise ratio (SNR). However, randomly varying the throttle using a control system can overcome the periodic nature of the vibrations. To achieve such control, we designed the system and its electronic controller, introducing a pseudo-random control scheme to the Mini-SOSIE system. Field tests verified the validity and efficacy of the designed system. The autocorrelation of the reference trace was better; its SNR was improved by 16.3 dB with respect to normal operation. The new Mini-SOSIE system design provides an alternative for shallow seismic exploration and small engineering exploration. It is also a stable reliable source that can emit a stable repeatable source waveform, which can provide high- quality field data and improve the performance of seismic exploration in the first step.

Keywords
Mini-SOSIE
pseudorandom
resolution
SNR
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Journal of Seismic Exploration, Electronic ISSN: 0963-0651 Print ISSN: 0963-0651, Published by AccScience Publishing