GPS-RTK界址点测量系统性误差改正方法探讨
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摘要
在GPS-RTK测量界址点时,通过点校正获取坐标转换参数会引起系统性的坐标转换残差;在测定建筑物墙角等界址点时,只能以接收机天线的外缘靠近墙角位置,使得天线中心偏离界址点的实际位置,导致界址点测量偏心差。为此,通过在测区所有已知点上检测其坐标以建立测区的坐标转换残差改正模型,并导出三种基于天线偏心改正的界址点坐标计算及其误差公式,基本消除RTK界址点测量中的系统性误差影响。实际应用表明,该方法原理简单且便于外业施测和编程实现,可提高GPS-RTK界址点测量的精度。
At the GPS-RTK boundary point measurement,the coordinates of the conversion parameters obtained through the point calibration will cause the systematic coordinate transformation residuals.During the measurement of the building corner and other boundary points,only the outer edge of the receiver antenna can be closed to the corner position,which makes the antenna center deviate from actual location of the boundary point,resulting in the boundary point measurement eccentricity.Therefore,this paper builds the coordinate transformation residual model by detecting the coordinates of all known points in the survey,and deriving three kinds of calculation of boundary point coordinates and its error equations based on antenna eccentricity correction,thus essentially eliminating the effect of systematic errors of RTK boundary point measurement.The application of the example shows that the method is simple and convenient for field application and programming,and improves the accuracy of GPS-RTK boundary point measurement.
At the GPS-RTK boundary point measurement,the coordinates of the conversion parameters obtained through the point calibration will cause the systematic coordinate transformation residuals.During the measurement of the building corner and other boundary points,only the outer edge of the receiver antenna can be closed to the corner position,which makes the antenna center deviate from actual location of the boundary point,resulting in the boundary point measurement eccentricity.Therefore,this paper builds the coordinate transformation residual model by detecting the coordinates of all known points in the survey,and deriving three kinds of calculation of boundary point coordinates and its error equations based on antenna eccentricity correction,thus essentially eliminating the effect of systematic errors of RTK boundary point measurement.The application of the example shows that the method is simple and convenient for field application and programming,and improves the accuracy of GPS-RTK boundary point measurement.
引文
[1]郭英起,伊晓东,李本新.利用GPS RTK测定建筑物墙角点方法研究[J].测绘工程,2008,17(2):48-50.
[2]祝会忠,徐爱功,高星伟,等.长距离GNSS网络RTK算法研究[J].测绘科学,2014,39(5):80-83.
[3]周国文.基于CORS系统的网络RTK技术在城市地形测量中的应用[J].测绘与空间地理信息,2014,37(9):147-148.
[4]侯志彬.CORS技术在油田用地变更调查中的应用[J].交通科技与经济,2014,15(5):119-121.
[5]陈俊林.GPS-RTK在常规控制测量中的精度及可靠性分析[J].测绘与空间地理信息,2011,34(5):95-98.
[6]姚吉利.RTK测定房屋遮挡点方法研究[J].测绘通报,2005(12):41-43.
[7]YANG Y.Robust estimation of geodetic datum transformation[J].Journal of Geodesy,1999,73(5):268-274.
[8]陈宇,白征东,罗腾.基于改进的布尔沙模型的坐标转换方法[J].大地测量与地球动力学,2010,30(3):71-73.
[9]汤静雅,谷金.GPS实时动态差分坐标转换残差改正方法[J].测绘科学,2015,40(11):155-158.
[10]邓勇,张正禄,黄江雄,等.工程测量中的坐标转换相关问题探讨[J].测绘科学,2011,36(5):28-30.
[11]张勤,王利.GPS坐标转换中高程异常误差影响规律研究[J].测绘通报,2001(6):12-14.
[12]王文利,郭春喜,程传录.大地高误差对Bursa七参数平面转换精度的影响[J].测绘科学,2011,36(5):37-38.
[13]杜兰,张捍卫,周庆勇,等.坐标转换参数之间的相关性解析[J].大地测量与地球动力学,2011,31(1):59-62.
[14]余晓红,刘大杰.地图数字化数据坐标变换的相关性分析[J].武汉大学学报(信息科学版),2002,27(5):456-461.
[15]张锦明,游雄,万刚.DEM插值参数优选的试验研究[J].测绘学报,2014,43(2):178-192.
[2]祝会忠,徐爱功,高星伟,等.长距离GNSS网络RTK算法研究[J].测绘科学,2014,39(5):80-83.
[3]周国文.基于CORS系统的网络RTK技术在城市地形测量中的应用[J].测绘与空间地理信息,2014,37(9):147-148.
[4]侯志彬.CORS技术在油田用地变更调查中的应用[J].交通科技与经济,2014,15(5):119-121.
[5]陈俊林.GPS-RTK在常规控制测量中的精度及可靠性分析[J].测绘与空间地理信息,2011,34(5):95-98.
[6]姚吉利.RTK测定房屋遮挡点方法研究[J].测绘通报,2005(12):41-43.
[7]YANG Y.Robust estimation of geodetic datum transformation[J].Journal of Geodesy,1999,73(5):268-274.
[8]陈宇,白征东,罗腾.基于改进的布尔沙模型的坐标转换方法[J].大地测量与地球动力学,2010,30(3):71-73.
[9]汤静雅,谷金.GPS实时动态差分坐标转换残差改正方法[J].测绘科学,2015,40(11):155-158.
[10]邓勇,张正禄,黄江雄,等.工程测量中的坐标转换相关问题探讨[J].测绘科学,2011,36(5):28-30.
[11]张勤,王利.GPS坐标转换中高程异常误差影响规律研究[J].测绘通报,2001(6):12-14.
[12]王文利,郭春喜,程传录.大地高误差对Bursa七参数平面转换精度的影响[J].测绘科学,2011,36(5):37-38.
[13]杜兰,张捍卫,周庆勇,等.坐标转换参数之间的相关性解析[J].大地测量与地球动力学,2011,31(1):59-62.
[14]余晓红,刘大杰.地图数字化数据坐标变换的相关性分析[J].武汉大学学报(信息科学版),2002,27(5):456-461.
[15]张锦明,游雄,万刚.DEM插值参数优选的试验研究[J].测绘学报,2014,43(2):178-192.