海洋测绘中精密单点定位精度适用性分析
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摘要
目前IGS共提供6类精度和时效性不同的精密星历产品,为了验证不同精度和时效性的IGS精密星历产品在海洋测绘中的适用情况,使用6类不同的IGS精密星历产品,分别对固定点观测数据和海上浮动点观测数据进行精密单点定位解算,并对解算结果分别进行比对分析和统计。固定点比对结果表明,IGS和IGR精密星历精密单点定位解算在平面位置方向均能达到平均8厘米的外符合精度,IGU00至IGU18精密单点定位解算精度稍差,平面外符合精度在10～13cm,且精度随着发布时间的推迟而提高;PPP潮位的解算结果表明,从IGS至IGU18,高程方向的解算精度相当,和固定潮位站的数据相比,均方根差在16～18cm。
In order to verify the applicable situation of different precision and timeliness used in marine surveying,six kinds of IGS precision ephemeris products are used to carry out precise single-point positioning calculations on fixed-point observation data and floating-point observation data on the sea,and the results of the calculations are compared and analyzed separately.The fixed point comparison results show that the accuracy of IGS and IGR precise ephemeris precision single-point positioning can reach an average of 12 cm in the plane position,and the accuracy of the IGU00 to IGU18 precision single-point positioning is slightly poorer,out-of-plane compliance.The accuracy is 13～15 cm,and the accuracy increases with the delay of the release time.The solution of the PPP tidal level shows that the resolution of the elevation direction from the IGS to the IGU18 is quite accurate,compared with the data of the fixed tidal station,mean square root difference is between 16 cm and 18 cm.
In order to verify the applicable situation of different precision and timeliness used in marine surveying,six kinds of IGS precision ephemeris products are used to carry out precise single-point positioning calculations on fixed-point observation data and floating-point observation data on the sea,and the results of the calculations are compared and analyzed separately.The fixed point comparison results show that the accuracy of IGS and IGR precise ephemeris precision single-point positioning can reach an average of 12 cm in the plane position,and the accuracy of the IGU00 to IGU18 precision single-point positioning is slightly poorer,out-of-plane compliance.The accuracy is 13～15 cm,and the accuracy increases with the delay of the release time.The solution of the PPP tidal level shows that the resolution of the elevation direction from the IGS to the IGU18 is quite accurate,compared with the data of the fixed tidal station,mean square root difference is between 16 cm and 18 cm.
引文
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[9]张建龙,徐爱功,张兆南,等.RTKLIB软件静态精密单点定位精度测试与分析[J].全球定位系统,2014(2):37-40.
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[11]张小红.动态精度单点定位(PPP)的精度分析[J].全球定位系统,2006(1):7-10.
[12]易重海,陈永奇,朱建军,等.一种基于IGS超快星历的区域性实时精密单点定位方法[J].测绘学报,2011(4):226-230.
[2]赵建虎,王胜平,张红梅,等.基于GPSPPK/PPP的长距离潮位测量[J].武汉大学学报:信息科学版,2008(9):910-913.
[3]马飞虎,赵建虎,王胜平,等.近岸海域GPS在航潮位解算中潮位的提取方法研究[J].武汉大学学报,2006(12):1279-1282.
[4]尹倩倩,楼益栋,易文婷.IGS实时产品比较与分析[J].大地测量与地球动力学,2012(06):28-31.
[5]晏新村,欧阳永忠,孙付平.精密单点定位解算结果可靠性评估方法研究[J].全球定位系统,2012(06):9-12.
[6]李鹏,熊永良,黄玉龙,等.GPS星历对精密单点定位的影响[J].测绘科学,2009(2):15-18.
[7]刘焱雄,周兴华,张卫红,等.GPS精密单点定位精度分析[J].海洋测绘,2005(1):44-46.
[8]潘军道,韦照川,杨柯.基于RTKLIB的精密单点定位及结果分析[J].全球定位系统,2017(2):95-99.
[9]张建龙,徐爱功,张兆南,等.RTKLIB软件静态精密单点定位精度测试与分析[J].全球定位系统,2014(2):37-40.
[10]Jan kouba,pierre heroux,Precise point positioning Using IGS Orbit and clock products[J].GPS Solutions,2001(2):12-17.
[11]张小红.动态精度单点定位(PPP)的精度分析[J].全球定位系统,2006(1):7-10.
[12]易重海,陈永奇,朱建军,等.一种基于IGS超快星历的区域性实时精密单点定位方法[J].测绘学报,2011(4):226-230.