地磁秒数据补齐策略探讨  

Study on the Strategy of Geomagnetic Second Data Complement

作　　者：栗宁 李从芬[3] 贺北芳 LI Ning;LI Congfen;HE Beifang(Hubei Earthquake Agency,48 Hongshance Road,Wuhan 430071,China;Institute of Seismology,CEA,40 Hongshance Road,Wuhan 430071,China;Shiyan Civil Air Defense Office,76 South-Jianghan Road,Shiyan 442000,China)

机构地区：[1]湖北省地震局,武汉市430071 [2]中国地震局地震研究所,武汉市430071 [3]十堰市人民防空办公室,湖北省十堰市442000

出　　处：《大地测量与地球动力学》2022年第2期203-206,共4页Journal of Geodesy and Geodynamics

摘　　要：通过研究湖北省地磁台网数据发现,相邻台站数据相关性高且趋势相同。为解决地磁秒数据短期缺数的问题,基于素描的想法结合地磁特性,提出一种新的补数策略,即用傅里叶拟合法拟合出相似度高的完好数据作轮廓,调整傅里叶参数用轮廓拟合缺失数据,再用ARMA预测模型对细节进行修复。通过对实际缺省的地磁数据进行处理,验证了该策略具有良好的修补效果,为地磁秒数据补齐策略提供了新的思路。To solve the short-term shortage of geomagnetic second data,we study the data of Hubei inland magnetic network and find that the data of adjacent stations have high correlation and the same trend.Based on the idea of sketch,combined with the characteristics of geomagnetism,we propose a new complement strategy that uses Fourier to fit the good data with high similarity as the contour,and adjusts the Fourier parameters to make the contour fit the default data.Then we apply the ARMA prediction model to repair the details.Through processing actual default geomagnetic data,we verify that the strategy has good repair effect and provides a new idea and method for geomagnetic second data completion strategy.

关 键 词：地磁数据 补数策略 傅里叶拟合 ARMA预测 

分 类 号：P315[天文地球—地震学]