虚拟格网化的BDS/GPS位置差分方法研究
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摘要
针对普通用户终端定位精度无法满足特定场景的精度需求,基于局域CORS网并融合数据,生成位置改正数以修正终端位置,提高公众定位精度。经过开发服务端与终端软件进行大量测试,分析了格网生成配置的最优方案,并且进行虚拟格网实时位置差分外符合性测试。试验证明,虚拟格网位置差分能够提高普通终端定位精度,能够为公众提供平面RMS小于3 m的位置服务。
General user terminal positioning accuracy can not meet the accuracy requirements of specific scenes. Based on the local CORS network and fusion data,this paper generates position corrections to correct the terminal position. After extensive testing of the development server and terminal software,the optimal scheme of grid generation and configuration is analyzed,and the real-time position differential external conformance test of virtual grid is performed.Experiments show that the virtual grid location difference can improve the accuracy of ordinary terminal positioning,and can provide the public with a plane RMS less than 3 m location service.
General user terminal positioning accuracy can not meet the accuracy requirements of specific scenes. Based on the local CORS network and fusion data,this paper generates position corrections to correct the terminal position. After extensive testing of the development server and terminal software,the optimal scheme of grid generation and configuration is analyzed,and the real-time position differential external conformance test of virtual grid is performed.Experiments show that the virtual grid location difference can improve the accuracy of ordinary terminal positioning,and can provide the public with a plane RMS less than 3 m location service.
引文
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[13]周万振,秘金钟,李得海,等.BDS/GPS/GLONASS融合网格伪距差分定位性能分析[J].测绘科学,2016,41(12):5-9.
[14] DALE Z,CLAIRE P,AMY R,et al. An experimental comparison of ordinary and universal Kriging and inverse distance weight[J]. Mathematical Geology,1999,31(4):375-390.
[15]徐忠燕,张传定.局域差分GPS改正数学模型分析与比较[J].海洋测绘,2007,27(1):24-26.
[2]吴晓东,沈刚,夏威,等.交通行业GNSS差分信息播发技术研究[J].全球定位系统,2015(1):41-45.
[3]王海涛,张丹.北斗高精度位置服务在精准农业中的应用[J].测绘通报,2017(S2):24-27.
[4]刘琳. BDS/GPS双模差分定位技术的研究及实现[D].北京:北京交通大学,2013:31-47.
[5]严丽,李萌.BDS+GPS相对定位精度因子分析[J].测绘学报,2017,46(3):325-331.
[6]李鹤峰,秘金钟,党亚民,等.基于CORS的多基准站BDS/GPS融合差分网定位性能分析[J].大地测量与地球动力学,2014,34(6):81-85.
[7]李征航,黄劲松.GPS测量与数据处理[M].武汉:武汉大学出版社,2010:173-180.
[8]王霞迎,秘金钟.单基线载波相位双差定位、位置差分和单点定位的精度分析[J].测绘通报,2012(S1):89-93.
[9]陈振,秘金钟,王权,等.一种基于网格虚拟参考站的伪距差分定位方法研究[J].大地测量与地球动力学,2016,36(3):221-225.
[10]陈振,秘金钟,王权,等.基于网格中心点虚拟参考站的伪距差分方法[J].测绘通报,2016(7):5-9.
[11]李鹤峰,党亚民,秘金钟.BDS与GPS、GLONASS多模融合导航定位时空统一[J].大地测量与地球动力学,2013,33(4):73-78.
[12]周万振,秘金钟,李得海,等.BDS+GPS手持机支持下的网格伪距差分定位[J].测绘通报,2017(2):1-5.
[13]周万振,秘金钟,李得海,等.BDS/GPS/GLONASS融合网格伪距差分定位性能分析[J].测绘科学,2016,41(12):5-9.
[14] DALE Z,CLAIRE P,AMY R,et al. An experimental comparison of ordinary and universal Kriging and inverse distance weight[J]. Mathematical Geology,1999,31(4):375-390.
[15]徐忠燕,张传定.局域差分GPS改正数学模型分析与比较[J].海洋测绘,2007,27(1):24-26.