A Similarity Measurement Method for Magnetic Anomaly Signal under Low Signal-to-Noise Based on Orthogonal Basis Function–Edit Distance

QIU Jing; OU Jindong; XIE Dong; WANG Zheng; DU Jiezhuo

doi:10.11999/JEIT210029

Volume 44 Issue 2

Feb. 2022

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Article Navigation > Journal of Electronics & Information Technology > 2022 > 44(2): 745-753

QIU Jing, OU Jindong, XIE Dong, WANG Zheng, DU Jiezhuo. A Similarity Measurement Method for Magnetic Anomaly Signal under Low Signal-to-Noise Based on Orthogonal Basis Function–Edit Distance[J]. Journal of Electronics & Information Technology, 2022, 44(2): 745-753. doi: 10.11999/JEIT210029

Citation:

QIU Jing, OU Jindong, XIE Dong, WANG Zheng, DU Jiezhuo. A Similarity Measurement Method for Magnetic Anomaly Signal under Low Signal-to-Noise Based on Orthogonal Basis Function–Edit Distance[J]. Journal of Electronics & Information Technology, 2022, 44(2): 745-753. doi: 10.11999/JEIT210029

Citation:

QIU Jing, OU Jindong, XIE Dong, WANG Zheng, DU Jiezhuo. A Similarity Measurement Method for Magnetic Anomaly Signal under Low Signal-to-Noise Based on Orthogonal Basis Function–Edit Distance[J]. Journal of Electronics & Information Technology, 2022, 44(2): 745-753. doi: 10.11999/JEIT210029

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A Similarity Measurement Method for Magnetic Anomaly Signal under Low Signal-to-Noise Based on Orthogonal Basis Function–Edit Distance

doi: 10.11999/JEIT210029

Key Laboratory of Optoelectronic Technology and System of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China

Funds: The National Natural Science Foundation of China (51775070), The Fundamental Research Funds for the Central Universities (2019CDJGFGD002)

Received Date: 2021-01-08
Rev Recd Date: 2021-06-24

Available Online: 2021-07-07

Publish Date: 2022-02-25

Abstract

Abstract

Considering the problem that the similarity of magnetic anomaly signals is difficult to measure under low signal-to-noise ratio, a similarity measurement method OBF-EDR based on the combination of Orthogonal Basis Function (OBF) decomposition and Edit Distance on Real sequence (EDR) is proposed. This method obtains discrete basis function coefficients by decomposing the magnetic anomaly signals with orthogonal basis functions method. The signal-to-Noise Ratio (SNR) of discrete basis function coefficients is improved due to the uncorrelated characteristics of background noise and basis functions. EDR is used to measure the discrete coefficients of the basis function so as to measure indirectly the similarity of the magnetic anomaly signals. The simulation test shows that the OBF-EDR method can measure the similarity of magnetic anomaly signals at a lower SNR than the EDR algorithm.
- Orthogonal Basis Function(OBF),
- Edit distance,
- Magnetic signature waveform,
- Similarity measurement,
- Low Signal-to-Noise Rate (SNR)

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References(22)

References

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