南极四种在线GPS定位服务系统的精度比较与分析Accuracy comparison of four online precise positioning service systems in antarctica
左耀文,张胜凯,鄂栋臣,张卿川
摘要(Abstract):
针对使用在线GPS定位服务系统处理南极地区GPS数据精度的问题,介绍4种常用在线GPS定位服务系统APPS、CSRS-PPP、gaps以及magicGNSS,分别使用4种在线GPS服务系统对南极地区长期连续(7d)观测数据进行处理,分析其精度与稳定性。将处理结果与相同框架下真值进行比较与分析,发现4种在线GPS服务系统在南极地区解算精度都能达到dm量级,其中APPS与CSRS-PPP两种服务系统在南极地区解算结果的精度与稳定性优于gaps与magicGNSS,可达cm量级。另外,使用4种在线GPS服务系统处理短期(1d以内)观测数据,对得到的解算结果进行分析可以发现3h以上观测时长的数据可以保证稳定的解算精度。
关键词(KeyWords): 在线服务系统;GPS;精密单点定位;南极
基金项目(Foundation): 国家自然科学基金项目(41176173);; 国家重大科学研究计划(2012CB957701;2013CBA01804);; 南北极环境综合考察及资源潜力评估项目(CHINARE2015)
作者(Author): 左耀文,张胜凯,鄂栋臣,张卿川
DOI: 10.16251/j.cnki.1009-2307.2017.01.002
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