IGS精密星历和钟差对天顶对流层延迟精度的影响  

Influence of IGS precise ephemeris and clock error on zenith tropospheric delay precision

作　　者：陈于[1] 陈刚[1] 赵遐龄 金波文 

机构地区：[1]中国地质大学(武汉)信息工程学院,武汉430074 [2]中国地质大学(武汉)研究生院,武汉430074

出　　处：《测绘科学》2014年第10期13-16,共4页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41274036);中央高校基本科研业务费专项资金优秀青年基金(CUGL130258)

摘　　要：为研究IGS精密轨道和钟差产品对天顶对流层延迟精度的影响,文章利用位于中国北京、上海、拉萨等地的6个IGS跟踪站所提供的2013年4月7日~10日4天的数据,采用GPSTools软件进行实验,计算各跟踪站的天顶对流层延迟(ZTD),并与IGS提供的对流层延迟产品进行对比。结果表明,利用IGS精密轨道解算的ZTD与IGS提供的ZTD相当,两者偏差的平均RMS优于5mm,利用IGS超快速钟差预报部分解算的ZTD与IGS提供的ZTD存在2cm^3cm误差,平均RMS大于1cm。To study the influence of IGS precise ephemeris and clock error on zenith tropospheric delay precision,by taking the data obtained from IGS stations in Beijing,Shanghai,Lhasa and other three cities in China from 7to 10 April 2013as test data,the values of Zenith Tropospheric Delay（ZTD）were calculated with GPSTools,and compared with the IGS tropospheric delay products.Experimental results showed that the value of ZTD calculated by IGS precise orbits was equivalent to that of IGS,and the average RMS was smaller than 5mm;there was 2cm-3cm error between the value of ZTD calculated by IGS ultra-rapid clock error prediction and that provided by IGS server,and the average RMS was larger than 1cm.

关 键 词：IGS产品 精密星历 钟差 天顶对流层延迟 精密单点定位 

分 类 号：P228[天文地球—大地测量学与测量工程]