姚休义, 滕云田, 杨冬梅, 姚远, 陈俊. 2016: 地磁观测数据重构技术研究. 地震学报, 38(6): 878-888. DOI: 10.11939/jass.2016.06.007
引用本文: 姚休义, 滕云田, 杨冬梅, 姚远, 陈俊. 2016: 地磁观测数据重构技术研究. 地震学报, 38(6): 878-888. DOI: 10.11939/jass.2016.06.007
Yao Xiuyi, Teng Yuntian, Yang Dongmei, Yao Yuan, Chen Jun. 2016: On reconstruction technique of geomagnetic observation data. Acta Seismologica Sinica, 38(6): 878-888. DOI: 10.11939/jass.2016.06.007
Citation: Yao Xiuyi, Teng Yuntian, Yang Dongmei, Yao Yuan, Chen Jun. 2016: On reconstruction technique of geomagnetic observation data. Acta Seismologica Sinica, 38(6): 878-888. DOI: 10.11939/jass.2016.06.007

地磁观测数据重构技术研究

On reconstruction technique of geomagnetic observation data

  • 摘要: 基于地磁相对记录数据在1 000 km范围内有较高的相关性,本文以缺失数据台站的邻近台站作为参考台站,通过关系拟合及加权对缺失数据进行了重构.数据仿真结果表明:重构数据与原始数据的变化形态极为一致,磁静日平均重构残差仅为0.11 nT,磁扰日平均重构残差为0.23 nT;重构数据与原始数据的功率谱密度变化特征基本相同,相关性高达1.0.此外,从时域和频域上验证了空间加权法在地磁相对记录数据重构上的有效性,将其应用于实际缺失数据重构中也取得了较好的效果.

     

    Abstract: This paper applies space weighting method to rebuild geomagnetic missing data based on the high correlation of observatory data in the range of 1 000 km. The simulation results show that variation of rebuilt data is consis-tent to that of original data, and their average residual is 0.11 nT in quiet day, and reaches 0.23 nT in disturbed day. The correlation of their power spectral density reaches up to 1.0. Furthermore, the space weighting method is verified to be effective for geomagnetic data reconstruction in time and frequency domains, and also achieves good results in the actual data reconstruction.

     

/

返回文章
返回