基于GNSS基准站网的对流层延迟建模Tropospheric delay modeling based on GNSS network
委民正;明国辉;
摘要(Abstract):
针对在卫星导航定位中,通常采用对流层模型进行,对流层延迟误差修正的现状,该文研究了一种基于GNSS基准站网的对流层延迟建模方法,并基于此方法利用日本地区GENET参考网约737个站5a的GNSS-ZTD序列建立了区域对流层模型ZTDM-JPN,并将ZTDM-JPN模型应用于GPS及北斗定位实验,分析了其在GPS及北斗定位中的实际应用性能。通过与国际上常用的对流层模型EGNOS、UNB3m作比较,结果表明,ZTDM-JPN模型的模拟精度较相同条件下的EGNOS与UNB3m模型分别提升约26%和21%,从而验证了该建模方法的可行性与优越性。
关键词(KeyWords): 对流层天顶延迟;EGNOS模型;UNB3m模型;精密单点定位
基金项目(Foundation):
作者(Authors): 委民正;明国辉;
DOI: 10.16251/j.cnki.1009-2307.2018.02.008
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