星站差分GPS在水下地形测量中的应用

Application of Starfire WADGPS in underwater topographic survey

介绍星站差分GPS的原理。通过SF-2050G型星站差分GPS在长江王家渡水道的应用测试,分析了星站差分GPS较传统差分GPS的优势:无需建立GPS本地基准站,单机作业便能大范围应用,并且随着时间的增长其定位精度可收敛至5 cm。测试结果证明星站差分GPS能稳定、高效、高精度地应用于水下地形测量。

The principle of Starfire WADGPS technology was introduced. Based on the application of SF-2050G type WADGPS in an underwater topographic survey of the Wangjiadu channel of the Yangtze River, the advantages of the Starfire WADGPS, as compared with the traditional DGPS, were pointed out： without needing for a local GPS base station, single pieces of its equipment can be used for large-scale survey with its precision that can reach 5cm. Test results show that the Starfire WADGPS is highly stable, highly efficient and highly precise in underwater topographic surveys.