Improved Data Preprocessing Algorithm for Time-Domain Induced Polarization Method with Digital Notch Filter

IF 2 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

Acta Geophysica Pub Date : 2016-12-28 DOI:10.1515/acgeo-2016-0015

Shuang-Chao Ge, M. Deng, Kai Chen, Bin Li, Yuan Li

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引用次数: 5

Abstract

Time-domain induced polarization (TDIP) measurement is seriously affected by power line interference and other field noise. Moreover, existing TDIP instruments generally output only the apparent chargeability, without providing complete secondary field information. To increase the robustness of TDIP method against interference and obtain more detailed secondary field information, an improved data-processing algorithm is proposed here. This method includes an efficient digital notch filter which can effectively eliminate all the main components of the power line interference. Hardware model of this filter was constructed and Vhsic Hardware Description Language code for it was generated using Digital Signal Processor Builder. In addition, a time-location method was proposed to extract secondary field information in case of unexpected data loss or failure of the synchronous technologies. Finally, the validity and accuracy of the method and the notch filter were verified by using the Cole-Cole model implemented by Simulink software. Moreover, indoor and field tests confirmed the application effect of the algorithm in the fieldwork.

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改进的数字陷波滤波器时域诱导偏振法数据预处理算法

时域感应极化(TDIP)测量受到电力线干扰和其他场噪声的严重影响。此外，现有的TDIP仪器通常只输出表面电荷率，而不提供完整的次级油田信息。为了提高TDIP方法对干扰的鲁棒性，获得更详细的二次场信息，本文提出了一种改进的数据处理算法。该方法包括一个高效的数字陷波滤波器，可以有效地消除电力线各主要分量的干扰。构建了该滤波器的硬件模型，并利用数字信号处理器生成器生成了该滤波器的Vhsic硬件描述语言代码。此外，提出了一种时间定位方法，在同步技术发生意外数据丢失或失效时提取二次现场信息。最后，利用Simulink软件实现的Cole-Cole模型验证了该方法和陷波滤波器的有效性和准确性。通过室内和现场试验，验证了该算法在现场的应用效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Geophysica 地学-地球化学与地球物理

CiteScore

3.90

自引率

13.00%

发文量

251

审稿时长

5.3 months

期刊介绍： Acta Geophysica is open to all kinds of manuscripts including research and review articles, short communications, comments to published papers, letters to the Editor as well as book reviews. Some of the issues are fully devoted to particular topics; we do encourage proposals for such topical issues. We accept submissions from scientists world-wide, offering high scientific and editorial standard and comprehensive treatment of the discussed topics.