摘要
研究了由多种卫星磁场观测数据建立的最新的世界地磁场模型WMM2010与地面台站观测值之间的关系,并将常用的国际参考地磁场模型IGRF11作为对比参照。首先分析了IGRF11与台站观测值的对比关系,验证了IGRF模型的精度和可靠性。其次分析了WMM2010与IGRF11模型的差异,引入绝对误差、均方根误差、相对误差和权重系数等指标来进行评价,分析表明,WMM2010模型在研究地磁异常场时的正常场改正和改善边界效应时填补空白区域中更具参考价值。
The relationship between the observed value and the latest World Magnetic Model WMM2010, constructed with various satellite geomagnetic data, is studied; as well as the relationship between the observed value and the International Geomagnetic Reference Field model IGRF11. Firstly, a comparison is made between IGRFll and the observed value. The precision and reliability of IGRF was evaluated. Then, the difference between WMM2010 and IGRFll was analyzed. Indexes, such as absolute errors, mean square root errors, relative errors and weigh coefficients, are introduced to compare the two models. The results suggest that the WMM2010 model has more reference value for the normal field correction in the geomagnetic abnormity field research, thus filling a gap to improve the boundary effect.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2014年第8期923-929,共7页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(41274045)~~
