多站差分RTKGPS技术在海岸风沙观测中的应用

The Application of Multi-station RTKGPS in the Measurement of Coastal Dune

根据海岸风沙运动的特点和单站差分RTKGPS的特点,提出了应用多站计算7个参数Δx、Δy、Δz、Ωx、Ωy、Ωz和K的坐标平滑处理技术和求解高程异常值ζ进行曲面拟合的多站差分RTKGPS技术,并对海岸风沙观测点的高程进行实际测量,选取186个观测点的结果与传统的水准测量观测出来的结果进行比较,其高程误差范围在0.6～1.0 mm之间。表明多站差分RTKGPS技术的测量精度能满足海岸风沙观测的精度要求。

According to the properties of coastal dune movement and single-station RTKGPS,the multi-station RTKGPS technology calculating seven parameters（Δx、Δy、Δz、Ωx、Ωy、Ωz、K） and the error value of elevation was studied in this paper.To measure the elevation of the coastal dune movement with this technology,186 points were chosen to compared with the points measured by leveling,the range of the error is 0.6mm to 1.0 mm.The precision of multi-station RTKGPS technology can completely meet the precision of coastal dune movement measurement.