摘要
传统的水面流速流向测量多采用经纬仪交会法,此法需要大量的人力和设备,工作量大且费时。近几年,随着全球定位系统(GPS)的广泛应用和实践,在一定范围内,采用GPS定位法替代经纬仪交会法施测水面流速流向。介绍了GPS定位法的测量原理、设备,以及测量方法。通过对GPS定位法的精度和优缺点的分析,得出采用GPS定位法施测水面流速流向具有较高的推广价值。
Traditionally, surface current velocity and direction measurement mostly adopts intersection method with theodolite, which requires significant amount of manpower and instruments; what＇s more, it takes both time and effort. In recent years, with the development and widely use of global position system, in some fields, GPS method is used to take the place of intersection method with theodolite to perform surface current velocity and direction measurement. This article presents measurement principle, equipment and method of GPS. Through analysis of precision and advantage ＆ disadvantage for GPS, it has proved that application of GPS in surface current velocity and direction measurement is of highly populization value.
出处
《水利水文自动化》
2006年第1期33-35,共3页
Automation in Water Resources and Hydrology
关键词
GPS
水面
流速流向
测量
应用
GPS
water surface
current velocity and direction
measurement
application
