MarineSTAR星站差分定位技术在水深测量中的应用

Application of MarineSTAR satellite difference positioning techonology in bathymetric survey

星站差分定位技术作为一项新兴的技术,具有GPS的所有特点,可以单机作业,无须在陆地上架设基准站,它的基准站是海事卫星(Inmarsat),MarineSTAR就是一个覆盖区域很广的星站差分定位系统。结合一个境外项目,针对在测区不宜采用常规手段架设基准站测量的问题,研究MarineSTAR星站差分定位技术的原理和方法,采用在已知点上比对以及用常规测量方法抽检,说明星站差分定位技术可以应用在大比例尺水深测量中。该技术因为无须架设基准站,大大提高了工作效率。

As an emerging technology,satellite difference positioning technology has all the characteristics of GPS.It can work on a single unit without setting up a base station on land.Its base station is the Inmarsat.MarineSTAR for example,cover a wide range.This article combines an overseas project,aiming at the problem that it is not appropriate to use conventional methods to set up a base station for survey in the measurement area,and the principle and method of satellite difference positioning technology are studied.By comparing the known points and random inspection with conventional measurement methods,it is showed that the satellite difference positioning technology can be applied to large-scale bathymetric survey.Because there is no need to set up a base station,the work efficiency of the technology is greatly improved.