iGMAS全球电离层TEC格网产品精度分析Accuracy analysis of iGMAS global ionospheric TEC grid products
李涌涛,马洪磊,李建文,师一帅,米科峰,朱璇
摘要(Abstract):
为了分析与评估国际GNSS监测评估系统(iGMAS)全球电离层TEC格网产品精度,该文基于iGMAS及IGS各电离层分析中心发布的全球电离层TEC格网产品,进行了精度比较分析,结果表明:iGMAS与IGS、CODE、JPL、ESOC、UPC等IGS电离层工作组发布的全球电离层TEC格网产品,在全球、不同纬度带和欧洲等不同区域均表现出较高的一致性和强相关性,互差为0~2.0 TECU;JPL分析中心GIM的内符合精度约为2.5 TECU,iGMAS、IGS、CODE、ESOC和UPC等分析中心GIM的内符合精度均小于1.5 TECU;在2~8 TECU的精度范围内,iGMAS全球电离层TEC格网产品的精度总体与IGS、CODE、JPL、ESOC、UPC等IGS电离层工作组的精度相当。
关键词(KeyWords): 国际GNSS监测评估系统;电离层;全球电离层格网
基金项目(Foundation): 国家自然科学基金项目(41904042)
作者(Author): 李涌涛,马洪磊,李建文,师一帅,米科峰,朱璇
DOI: 10.16251/j.cnki.1009-2307.2021.02.002
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