Diurnal variation correction method for multiple geomagnetic stations based on geomagnetic coordinates
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摘要: 传统多地磁台站日变改正都基于地理坐标,通过改进计算方法的方式来提高日变改正精度,本文通过比较分析传统日变改正的方法,并根据地磁坐标与地磁场强度具有更强相关性的特征,提出基于地磁坐标进行拟合的日变改正方法——地磁坐标拟合法。实验结果表明,基于地磁坐标的多站日变改正方法普遍提高了日变改正的精度,为多站日变改正提供了新的研究思路。Abstract: The conventional diurnal variation correction of multiple geomagnetic stations based on geographic coordinates is to increase the precision of diurnal variation correction by improving the calculation methods. Based on the comparative analysis of conventional diurnal variation correction methods, this study proposed the geomagnetic coordinate fitting method for diurnal variation correction based on the high correlation between geomagnetic coordinates and geomagnetic field strength. The experimental results show that the diurnal variation correction of multiple geomagnetic stations based on geomagnetic coordinates generally improves the precision of diurnal variation correction and, thus, serves as a new study approach for diurnal variation correction of multiple geomagnetic stations.
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