基于PPP技术的海岛礁平面控制测量应用实践
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摘要
讨论了基于精密单点定位技术来实现无已知控制点的海岛礁平面控制测量,分别从观测数据时段长度和数据采样间隔两个方面分析精密单点定位的静态解算精度及收敛情况,计算结果表明,IGS跟踪站的PPP(Precise Point Positioning)单天解在平面方向的精度为mm级,高程方向的精度为2~3cm;同时,还得出了PPP技术应用于静态控制测量的采样率以及静态解的收敛时间。最后用静态数据精密单点定位的结果同Gamit网解求较差计算出两者之差值。试验证明,静态精密单点定位技术能够用于高精度海岛礁平面控制测量。
Applying precise point positioning(PPP)technology to island control surveys without ground base stations was implemented by estimating static PPP accuracy and convergence speed with the length of observation data and data interval.The results show that static PPP accuracy can be achieved mm to the cm degree of IGS station.Horizontal accuracy is smaller than 1cm and vertical accuracy is better than 3cm.In addition,we obtained tthe interval and convergence time for use in control surveys with static PPP method.An example is investigated to verify the validity and practicability of the proposed methos for island control surveys in comparison with GAMIT/GLOBK results.
Applying precise point positioning(PPP)technology to island control surveys without ground base stations was implemented by estimating static PPP accuracy and convergence speed with the length of observation data and data interval.The results show that static PPP accuracy can be achieved mm to the cm degree of IGS station.Horizontal accuracy is smaller than 1cm and vertical accuracy is better than 3cm.In addition,we obtained tthe interval and convergence time for use in control surveys with static PPP method.An example is investigated to verify the validity and practicability of the proposed methos for island control surveys in comparison with GAMIT/GLOBK results.
引文
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[9]Dong Chaoyang,Xu Sida.Analysis of GPS Geodetic Control Network Layout for Boundary Survey[J].Hydrographic Surveying and Charting,2010(2):64-66(董朝阳,徐思达.边界测量GPS大地控制网布设分析[J].海洋测绘,2010(2):64-66)
[10]Tang Yingzhe,Yang Yuanxi,Song Xiaoyong.Data Processing and Result of National 2000’GPS Geodetic Control Network[J].Journal of Geodesy and Geodynamics,2003(3):77-80(唐颖哲,杨元喜,宋小勇.2000国家GPS大地控制网数据处理方法与结果[J].大地测量与地球动力学,2003(3):77-80)
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[2]Shi Yimin.Contemporary Geodetic Control Survey[M].Beijing:The Publishing House of Surveying and Maping,2008:147-160(施一民.现代大地控制测量[M].北京:测绘出版社,2008:147-160)
[3]Li Yanxing,Hu Xinkang,Zhao Chengkun.The Research of Data Processing Method in GPS Monitor Network[J].Acta Geodaetica et Cartographica Sinica,1999,38(1):62-66(李延兴,胡新康,赵承坤.GPS监测网数据处理方案研究[J].测绘学报,1999,38(1):62-66)
[4]Cheng Pengfei,Yang Yuanxi,Li Jiancheng.The Latest Advances in Geodesy[J].Bulletin of Surveying and Mapping,2007(2):1-4(程鹏飞,杨元喜,李建成,等.我国大地测量及卫星导航定位技术的新进展[J].测绘通报,2007(2):1-4)
[5]Ye Shirong,Zhang Shuangcheng,Liu Jingnan.Precision Analysis of Precise Point Positioning Based Tropospheric Delay Estimation[J].Geomatics and Information Science of Wuhan University,2008,33(8):788-791(叶世榕,张双成,刘经南.精密单点定位方法估计对流层延迟精度分析[J].武汉大学学报·信息科学版,2008,33(8):788-791)
[6]Zhang Xiaohong,Liu Jingnan,Forsberg R.Application of Precise Point Positioning in Airborne Survey[J].Geomatics and Information Science of Wuhan University,2006,31(1):19-22(张小红,刘经南,Forsberg R.基于精密单点定位技术的航空测量应用实践[J].武汉大学学报·信息科学版,2006,31(1):19-22)
[7]Li Kaifeng,Ouyang Yongzhong,Lu Xiuping,et al.Hydrographic Surveying Based on GPS Precise Point Positioning[J].Hydrographic Surveying and Charting,2009(1):1-4(李凯锋,欧阳永忠,陆秀平,等.基于GPS精密单点定位技术的水深测量[J].海洋测绘,2009(1):1-4)
[8]Ye Shirong.Precise Point Positioning Based on Undifferenced GPS Data[D].Wuhan:Wuhan University,2002(叶世榕.GPS非差相位精密单点定位理论与实现[D].武汉:武汉大学,2002)
[9]Dong Chaoyang,Xu Sida.Analysis of GPS Geodetic Control Network Layout for Boundary Survey[J].Hydrographic Surveying and Charting,2010(2):64-66(董朝阳,徐思达.边界测量GPS大地控制网布设分析[J].海洋测绘,2010(2):64-66)
[10]Tang Yingzhe,Yang Yuanxi,Song Xiaoyong.Data Processing and Result of National 2000’GPS Geodetic Control Network[J].Journal of Geodesy and Geodynamics,2003(3):77-80(唐颖哲,杨元喜,宋小勇.2000国家GPS大地控制网数据处理方法与结果[J].大地测量与地球动力学,2003(3):77-80)
[11]Reha D,Alkan M.Hydrographic Surveying with a Tide Gauge[J].International Hydrographic Review,2001,2(1):69-79
[12]Abdel-salam M A.Precise Point Positioning UnDifferenced Code and Carrier Phase Observations[D].Calgary,Alberta,Canada:the University of Calgary,2005
[13]Witchayangkoon B.Elements of GPS Precise Point Positioning[D].Orono,Maine:University of Maine,2000
[14]Hobiger T,Ichikawa R.Ray-traced Troposphere Slant Delays for Precise Point Positioning[J].Earth Planets Space,2008,60(1):1-4