基于OBF反变换的航空磁探测数据中方波干扰的剔除方法

doi:10.12305/j.issn.1001-506X.2025.07.04

Abstract

Abstract:

The square wave interference in the aeromagnetic anomaly detection data is very likely to be misjudged as the magnetic target signal by the magnetic anomaly signal detection system. A false alarm reduction method is proposed for the square wave interference in the aeromagnetic survey data. Based on the orthogonal basis function (OBF) detection to initially alert suspected magnetic anomaly signals, the algorithm estimates the slant range and uses OBF inverse transformation to obtain inversion signals adapted to the detection scene, effectively eliminating square wave interference using waveform similarity comparison methods. Finally, verification experiments are conducted using simulated and real data. The results indicate that compared to traditional OBF detection, the proposed waveform similarity comparison method for filtered signal and inversion signal can effectively eliminate square wave interference, and meet the application requirements of low false alarm rate in the magnetic detection system.

Key words: airborne magnetic anomaly detection (MAD), magnetic interference, slant range estimation, signal inversion, similarity calculation

CLC Number:

Ronghua TAO, Chun ZHOU, Baoqiang ZHANG, Zhentao YU, He QIAO, Cong LIU. Based on OBF inverse transform to eliminate square wave interference in airborne magnetic anomaly detection data[J]. Systems Engineering and Electronics, 2025, 47(7): 2110-2118.

Figures/Tables 8

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Based on OBF inverse transform to eliminate square wave interference in airborne magnetic anomaly detection data

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