摘要
基于地磁场日变规律的基本特性,介绍利用最小二乘法对其日变规律进行具体的讨论,并对其拟合精度进行评定;就短时间内而言,该方法对日变规律的模拟与外推,具有推广应用价值。
Based on the fundamental properties of the law of daily change in geomagnetic field, the law of daily change in geomagnetic field is discussed concretely by use of least squares method, and its interpolated accuracy is evaluated. In regard to the short period, the method, by which the law of daily change is simulated and extrapolated, is easily applied and spread.
出处
《测绘工程》
CSCD
2006年第5期31-33,共3页
Engineering of Surveying and Mapping
关键词
日变规律
最小二乘法
磁偏角
law of daily change
least squares method
magnetic declination
