Research on the Detection Method of MRS Signal Initial Amplitude Based on Chaotic Detection System

被引：2

作者：

Li, Cong ^{[1
,2
]}

Zeng, Zhaofa ^{[1
,2
]}

Yi, Xiaofeng ^{[3
,4
]}

Wang, Pengyu ^{[3
,4
]}

Wang, Yue ^{[3
,4
]}

Lu, Kaihua ^{[3
,4
]}

Sun, Yong ^{[3
,4
]}

An, Baizhou ^{[1
,2
]}

机构：

[1] Jilin Univ, Coll Geoexplorat Sci & Technol, Changchun 130026, Peoples R China

[2] Jilin Univ, Key Lab Appl Geophys, Minist Land & Resources, Changchun 130026, Peoples R China

[3] Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130026, Peoples R China

[4] Jilin Univ, Key Lab Geoexplorat Instrumentat, Minist Educ, Changchun 130026, Peoples R China

来源：

IEEE ACCESS | 2023年 / 11卷

基金：

中国国家自然科学基金;

关键词：

Magnetic resonance imaging; Chaos; Signal to noise ratio; Force; Oscillators; Noise measurement; Mathematical models; Magnetic resonance sounding; chaos system; weak signal recognition; groundwater; RESONANCE; NOISE; RESOLUTION; HARMONICS; STACKING; REMOVAL;

D O I：

10.1109/ACCESS.2023.3238118

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

When using magnetic resonance sounding (MRS) method for groundwater, the detection accuracy is often affected by electromagnetic noise. The chaos method can achieve signal extraction at a lower signal-to-noise ratio. However, this method has many problems when used to obtain MRS signals. Aiming at the attenuation characteristics of MRS signals, in this paper we propose a pre-segmentation method of MRS signals to improve the accuracy of chaos detection. In addition, a chaotic detection system model suitable for MRS signal recognition was constructed, and a calculation method for center-covered was used to improve the efficiency of determining the chaotic state. Through a large amount of simulation data, we have verified that this method can reliably extract MRS signals with a signal-to-noise ratio (SNR) of -30 dB, which provides technical support for the MRS method to work with a relatively high electromagnetic noise.

引用

页码：7959 / 7967

页数：9

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