SAFEMの全磁気強度測定における非対角の誤差補正に粒子群最適化の適用
Changsheng Liu1,2, Shaoyou Kan2, Xiaotian Liu2
1State Key Laboratory of Deep Earth Exploration and Imaging, Jilin University, Changchun 130026, People's Republic of China.
The Review of scientific instruments
|September 5, 2025
まとめ
改良された粒子群最適化 (IPSO) アルゴリズムを使用した新しい校正方法は,外部参照なしで,半空中周波数領域電磁気 (SAFEM) 総磁気強度 (TMI) 測定の誤りを正確に修正します.
科学分野:
- 地理学
- 電磁気学
- 信号処理
背景:
- 半空中周波数域電磁 (SAFEM) 方法は,三軸誘導磁気センサーから導かれた全磁気強度 (TMI) に依存しています.
- 非直角なセンサの誤差はTMIデータに不正確さをもたらし,従来の校正方法はインダクション磁気計には不十分である.
研究 の 目的:
- 三軸誘導磁気センサーの非対角的エラーに対処するために,SAFEMシステムの新しい高精度校正方法を開発する.
- カリブレーション過程で外部の物理的参照フィールドの必要性を排除する.
主な方法:
- 改善された粒子群最適化 (IPSO) アルゴリズムを開発し,非直角センサーのエラーを修正しました.
- TMIの平方平均誤差 (RMSE) を最小化する最適化問題として校正を策定した.
- 測定システムによるシミュレーションと物理実験で IPSO 方法を検証した.
主要な成果:
- シミュレーションにより,IPSOは標準的な粒子群最適化 (PSO) よりも優れた収束精度とノイズ耐性を提供することが示されました.
- 物理実験では,TMIの誤差が有意に減少し,最大絶対誤差は82. 84%,RMSEは87. 64%減少した.
- この方法は,交流電流ベクトルマグネトメーターのマルチパラメータエラーを効果的に校正します.
結論:
- 提案されたIPSOベースの校正方法は,SAFEMシステムにおけるTMIデータの品質を向上させるための堅牢で正確なソリューションを提供します.
- この技術は,SAFEM技術を使用して得られた地質学的探査データの信頼性を確保するために不可欠です.
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