黄河口海域测验中GPS动态后处理技术的应用
发布时间：2018-11-18 08:44
【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。
[Abstract]:In order to solve the problem of long-distance data transmission in the Yellow River Estuary Sea area test, the precise ephemeris is used instead of the broadcast ephemeris, and the digital transmission technology is replaced by the GPS dynamic post-processing technique, and the 3D coordinate values of the measuring points with different baseline lengths are obtained. In the range of 90 km, compared with the data obtained by GPS-RTK mode, the maximum error of elevation data obtained by GPS dynamic post-processing is 0.167 m, the average error is 0.007 ~ 0.047 m, and the median error is less than 0.064 m. The variation of the error is proportional to the baseline length, which is much smaller than the traditional tidal correction error. The maximum error of measuring point is not more than 0.097 m, the average error is 0.004 ~ 0.031 m, and the median error is not more than 0.037 m. There is no obvious relation between the variation trend and baseline length, and the error is much smaller than that of beacon.
【作者单位】： 黄河水利委员会山东水文水资源局;
【分类号】：P228.4;P332
[Abstract]:In order to solve the problem of long-distance data transmission in the Yellow River Estuary Sea area test, the precise ephemeris is used instead of the broadcast ephemeris, and the digital transmission technology is replaced by the GPS dynamic post-processing technique, and the 3D coordinate values of the measuring points with different baseline lengths are obtained. In the range of 90 km, compared with the data obtained by GPS-RTK mode, the maximum error of elevation data obtained by GPS dynamic post-processing is 0.167 m, the average error is 0.007 ~ 0.047 m, and the median error is less than 0.064 m. The variation of the error is proportional to the baseline length, which is much smaller than the traditional tidal correction error. The maximum error of measuring point is not more than 0.097 m, the average error is 0.004 ~ 0.031 m, and the median error is not more than 0.037 m. There is no obvious relation between the variation trend and baseline length, and the error is much smaller than that of beacon.
【作者单位】： 黄河水利委员会山东水文水资源局;
【分类号】：P228.4;P332
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