高精度GPS星链差分系统在珠江河口水下地形测量中的应用  

Application of GPS satellites chain differential technology in the underwater topographic survey of the Pearl River Estuar

作　　者：张永[1] 赵薛强[1] 王小刚[1] 

机构地区：[1]中水珠江规划勘测设计有限公司,广东广州510610

出　　处：《人民珠江》2013年第3期44-47,共4页Pearl River

基　　金：水利部"948项目"<高精度GPS星链差分系统关键技术引进>(200905)资助

摘　　要：Starfire全球双频GPS星链差分定位系统,利用精密单点定位技术可在全球范围提供分米级实时定位精度,单机快捷作业,优势明显。通过工程实例,星链差分系统配合测深仪组成自动定位测深系统同步进行测深定位采集数据,说明了星链差分技术在水下地形测量中精度可靠、信号稳定,打破作业距离受限问题,提高了工作效率。The Starfire satellites chain differential positioning system of global dual-frequency GPS using precise point positioning technology can provide decimeter-level real-time positioning accuracy in the worldwide,standalone shortcut jobs,have obvious advantages.Engineering examples,the satellites chain differential system with sounder composed of the automatic positioning sounding system,which can get sounding data and positioning data simultaneously,and explain the measurement accuracy and signal stability of Starfire chain differential technology in the underwater topography.The technology break the working distance limited and improve the work efficiency effectively.

关 键 词：星链差分 水下地形测量 珠江河口 

分 类 号：P228.4[天文地球—大地测量学与测量工程]