地磁日变数据时间同步相关系数分析  

Analysis for Time Synchronization of Magnetic Base Data with Correlation Coefficient

作　　者：姚俊杰[1] 孙毅[1] 刘国斌[1] 徐洪章[1] 

机构地区：[1]92488部队

出　　处：《海洋测绘》2005年第6期15-17,共3页Hydrographic Surveying and Charting

摘　　要：通过对两站地磁日变数据的分析,提出了利用相关系数法解算地磁日变观测站间测量时差的方法,导出了地磁日变观测站间观测数据的相关系数计算公式。并通过实例分析,验证了地磁日变数据利用相关系数法进行时间同步分析的正确性。在进行实例分析时注意到,短距离站间时差与一直使用的经度差时差法得到的时差出入很大,通过对相关系数时差法正确性的进一步验证后,对传统经度差时差改正方法的合理性提出质疑。Based on the analysis of magnetic daily variation in two magnetic base stations, this paper puts forward a measure method of the equation of time between stations with correlation coefficient and reduces a calculating formula for correlation coefficient. Through example analyzed, it is validated that the method of correlation coefficient is right. While analyzing, the author notices that the difference between the method of correlation coefficient and the method of longitude difference is quite big. As it is proved that the method of correlation coefficient is right through the example, we can say that the method of longitude difference is faulty.

关 键 词：海洋测量 磁力测量 相关系数 日变改正 时间同步 

分 类 号：P318.63[天文地球—固体地球物理学]