黄河口海域测验中GPS动态后处理技术的应用  

Application of GPS Dynamic Post Processing Kinetic in the Yellow River Estuary Surveying

作　　者：霍瑞敬[1] 宋士强[1] 田慧[1] 

机构地区：[1]黄河水利委员会山东水文水资源局,山东济南250100

出　　处：《人民黄河》2016年第1期9-11,18,共4页Yellow River

摘　　要：为了解决黄河口海域测验中远距离数据传输的问题,利用精密星历代替广播星历,采用GPS 动态后处理技术取代数字传输技术,得到了不同基线长度测点的三维坐标值.在90 km 范围之内,与GPS-RTK 模式获取的数据相比,GPS动态后处理技术处理得到的高程数据误差最大为0.167 m,平均误差为0.007～0.047 m,中误差在0.064 m 以内,误差的变化与基线长度基本呈正比,远小于传统的潮汐改正误差;测点平面点位数据误差最大不超过0.097 m,平均误差为0.004～0.031 m,中误差不超过0.037 m,其变化趋势和基线长度没有明显的关系,也远小于信标机的定位误差.In order to solve the long distance data transmission problem of the Yellow River estuary surveying,this paper used the precise ephemeris instead of broadcast ephemeris and adopted GPS dynamic post processing kinetic to replace the digital transmission technology,then got the three-dimensional coordinate values of measuring points of different baseline lengths. Within the range of 90 km,compared with the data of GPS-RTK mode,the maximum error of elevation data obtained by GPS dynamic post processing technology is 0. 167 m,the average error is no more than 0. 047 m and the middle error is within 0. 064 m. The change of error is basically proportional to the baseline length and this error is much less than the error of traditional tidal correction. The error of point data dose not exceeds 0. 097 m,the average error is 0. 004-0. 031 m and the middle error is no more than 0. 037 m. The change tendency of point data error has no obvious relationship with the baseline length and the error is also much less than the positioning error of beacon.

关 键 词：GPS动态后处理技术 精密星历 GPS-RTK 海域测验 黄河口 

分 类 号：P228[天文地球—大地测量学与测量工程] TV882.1[天文地球—测绘科学与技术]