摘要
目前海上风电已由近岸向远海方向发展。常规的GPS-RTK技术虽然定位精度能够达到厘米级,但却无法满足超过其信号覆盖范围以外区域。星站差分GPS既具有接近传统RTK测量定位精度高的优点,又具有全球性、全天候、连续性和实用性的特点,不需要架设基准站,单机即可作业,工作范围广,效率高。本文介绍了星站差分的基本原理和OmniSTAR技术的四种服务达到的精度,简述采用OmniSTAR技术对现有打桩船测量定位系统进行技术改进,最后通过海上测风塔桩基工程实例,介绍了星站差分GPS在远海施工测量中的应用。
At present,the wind farm has developed from the near shore to the distant sea.Conventional GPS-RTK technology can achieve centimeter-level positioning accuracy,but it can not satisfy the area beyond its signal coverage.The differential GPS of satellite-station has the advantages of high positioning accuracy close to traditional RTK measurement,and has the characteristics of global,all-weather,continuity and practicability.It does not need to set up a base station,it can be operated on a single machine with a wide working range and high efficiency.The article introduced the basic principle of the satellitestation difference and the accuracy of the four services of the OmniSTAR technology,and briefly described the technical improvement of the existing positioning system of piling boat by using OmniSTAR technology.Finally,the application of satellite-station differential GPS in offshore engineering survey was introduced through an example of offshore anemometer tower pile foundation engineering.
作者
陈士清
Chen Shiqing(CRCC Harbour&Channel Engineering Bureau Group Co.Ltd.,Zhuhai Guangdong 519000,China)
出处
《铁道建筑技术》
2019年第12期147-152,共6页
Railway Construction Technology
基金
中国铁建港航局集团有限公司科技研究开发计划课题(2018-A04)
