ÁP DỤNG PHÉP BIẾN ĐỔI WAVELET 2-D ĐỂ TÁCH TRƯỜNG DỊ THƯỜNG TỪ

Dang Van Liet * , Do Duc Cuong and Duong Hieu Dau

* Corresponding authorDang Van Liet

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Received: 20 Apr 2021
Accepted: 03 Jun 2022
Published: 01 May 2004
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Liệt, Đ. V., Cường, Đ. Đ., & Đẩu, D. H. (2004). ÁP DỤNG PHÉP BIẾN ĐỔI WAVELET 2-D ĐỂ TÁCH TRƯỜNG DỊ THƯỜNG TỪ. CTU Journal of Science, (2), 1-6. Retrieved from https://ctujsvn.ctu.edu.vn/index.php/ctujsvn/article/view/335
Issue
No. 2 (2004)
Section
Engineering Technology

Abstract

A measurement magnetic field may be composed by regional anomalies - corresponding to low frequencies - and by local anomalies - corresponding to high frequencies. The initial step of the magnetic interpretation was the separation of local or  regional anomalies from the measurement magnetic field. The Wavelet transform can be used to decompose a signal into approximation components - corresponding to high scales or low frequencies - and detail components - corresponding to low scales or high frequencies. In this manner, the Wavelet transform can be used to separate the local and regional magnetic anomalies. In this paper we used the Wavelet transform to separate the local - regional magnetic anomalies in one area's offshore ofSouth Viet Nam. The results were compared with the ones calculated by a traditional method.
Keywords: multi-resotution analysis

Tóm tắt

ABSTRACT

A measurement magnetic field may be composed by regional anomalies - corresponding to low frequencies - and by local anomalies - corresponding to high frequencies. The initial step of the magnetic interpretation was the separation of local or  regional anomalies from the measurement magnetic field.

The Wavelet transform can be used to decompose a signal into approximation components - corresponding to high scales or low frequencies - and detail components - corresponding to low scales or high frequencies. In this manner, the Wavelet transform can be used to separate the local and regional magnetic anomalies. In this paper we used the Wavelet transform to separate the local - regional magnetic anomalies in one area's offshore ofSouth Viet Nam. The results were compared with the ones calculated by a traditional method.

Keywords: Wavelet transform, multi-resotution analysis, regional anomalies, local anomalies.

Title: Application of the wavelet transform 2-D to separate  the magnetic anomalies.

Từ khóa: 1

Article Details

References

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