| 基于功率谱估计的航磁补偿优化处理方法 |
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| 作者姓名： | 吴佩霖 张群英 陈路昭 费春娇 朱万华 方广有 |
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| 作者单位： | 1. 中国科学院电子学研究所电磁辐射与探测技术重点实验室, 北京 100190;
2. 中国科学院大学, 北京 100049 |
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| 基金项目： | 国家自然科学基金（41374186）和863计划项目（2014AA093407）资助 |
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| 摘 要： | 航空磁法勘探中飞机的干扰磁场显著降低光泵磁力仪的探测能力。有效地补偿飞机干扰磁场具有重要意义。提出采用功率谱估计的方法对飞机机动飞行信号进行处理，从而获得航磁补偿系数的最优求解频带，并结合航磁补偿模型实现数据的最优补偿。设计高空标定飞行实验，对该方法进行验证。实验结果表明，该预处理方法在航磁补偿中使补偿系数的求解更加准确，从而获得更高的补偿提升比。
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| 关 键 词： | 航空磁法勘探 航磁补偿 光泵磁力仪 功率谱估计 |
| 收稿时间： | 2017-04-10 |
| 修稿时间： | 2017-07-13 |
Optimization aeromagnetic compensation method based on power spectrum estimation |
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| Authors: | WU Peilin ZHANG Qunying CHEN Luzhao FEI Chunjiao ZHU Wanhua FANG Guangyou |
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| Institution: | 1. Key Laboratory of Electromagnetic Radiation and Detection Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Aeromagnetic exploration is one of the most important methods in geophysics. Magnetic fields are typically measured by using optically pumped magnetometer mounted on an aircraft. However, any aircraft produces significant levels of magnetic interference. Therefore, aeromagnetic compensation is essential. In this work, power spectrum estimation is proposed to process the signal of the maneuver flight. The optimal bandwidth for the computation of compensation coefficients is obtained by using the method. The optimal compensation coefficients lead to more accurate aeromagnetic compensation. A calibration experiment is designed. In the experiment more accurate optimal compensation coefficients and higher improvement radio are obtained. The validity of the proposed method is demonstrated by the experimental results. |
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| Keywords: | aeromagnetic exploration aeromagnetic compensation optically pumped magnetometer power spectrum estimation |
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