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  5. Research on Gridding Precision Evaluation Method of Geomagnetic Field Model

Research on Gridding Precision Evaluation Method of Geomagnetic Field Model

来源 :第七届中国卫星导航学术年会 | 被引量 : 0次 | 上传用户：yztny
【摘 要】
：
With the in-depth research on geomagnetic field model and geomagnetic navigation,the appropriate method of precision evaluation of the geomagnetic field model is required.WMM model and INTERMAGNET obs
【作 者】
：
Yang Chong Hongzhou Chai Yifeng Chang Zongpeng Pan Huarun Wang Yuan Liu 
【机 构】
：
Institute of Geospatial Information, Information Engineering University, Zhengzhou 450001, China;Sta
【出 处】
：
第七届中国卫星导航学术年会
【发表日期】
：
2016年5期
【关键词】
：
Geomagnetic field model Geomagnetic navigation Observation WMM2015 Truncation or 
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论文部分内容阅读
　　With the in-depth research on geomagnetic field model and geomagnetic navigation,the appropriate method of precision evaluation of the geomagnetic field model is required.WMM model and INTERMAGNET observations data is used to research the precision of the latest WMM2015 model in the world,and analyzes the accuracy of different local areas,such as Europe,North America and China.According to the relationship between truncation order of spherical harmonic coefficients of geomagnetic field model and wavelength of spatial resolution,gridding method is proposed to evaluate the geomagnetic field model.And the precision analysis of WMM 2015 model in the global and local area is provided for the reference of obtaining the more-refined geomagnetic map in geomagnetic navigation matching.
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