北斗数据工程控制网应用实验及精度分析Application experiments and accuracy analysis of BeiDou data engineering control network
李森;周命端;陈积旭;
摘要(Abstract):
针对目前我国北斗系统已经开始实施全球化建设且地面最大可视卫星数已达到15颗的情况,该文提出利用北斗观测数据进行高精度工程控制测量的设想,并利用香港CORS站观测数据进行算例验证及精度分析,基于北斗系统观测数据控制网基线向量的稳定性和重复性,并将北斗系统计算结果与GPS进行对比分析。结果表明:北斗系统完全可以应用在厘米级定位精度的测绘领域;与GPS相比,北斗系统卫星星座尚未完全建成,一个卫星周期内北斗基线解算可用卫星个数不到GPS一半;数据解算过程中使用的北斗导航卫星精密轨道和钟差精度相对较低,各种精密解算软件使用的误差改正模型不够完善,误差消除不够彻底。
关键词(KeyWords): 北斗系统;GPS;控制网;基线重复性;精度分析
基金项目(Foundation): 北京市教委科技计划一般项目(SQKM201710016005)
作者(Authors): 李森;周命端;陈积旭;
DOI: 10.16251/j.cnki.1009-2307.2019.09.001
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