摘要
采用数字测量方法,对单点磁偏角进行了静日变化测量,用傅里叶三角级数拟合出了静日变化模型,结合长周期的年变化拟合模型,建立了高精度的单点地磁模型,并评定了模型精度,结果表明,用该方法建立的模型不仅精度高,而且易使用,用途广。
This paper adopt digital measurement,put the static and daily variational suvey of magnitic offset angle for sole point in practice,imitate the static and daily variational model by using Fourier series,form a high precise geomagnetic model for sole point and assess the pricision of the model together with the annual variational model,the result indicate the model has high pricision,easy and wide usage.
出处
《测绘科学》
CSCD
北大核心
2009年第S2期99-100,共2页
Science of Surveying and Mapping
关键词
磁偏角
磁子午线
真北子午线
静日变化测量
magnitic offset angle
magnitic meridian
real northern meridian
the static and daily variational suvey
