摘要
网络RTK技术在水利测量中广泛应用,此处阐述了基于FJCORS系统的RTK测量模式下CGCS2000大地高获取及高程拟合的计算方法,结合本单位在云霄县山洪灾害调查测量项目的实例,通过水准高程数据及大地高,求取高程异常值,采用二次曲面拟合法对3种不同数量高程点的拟合结果进行精度分析,验证了高程拟合精度的可靠性。所求得的高程拟合参数,通过FJCORS系统网络RTK进行外业采集可以同步实时获取正常高。该方法应用于一般水利工程测量中,能够提高工作效率。
Network RTK technology is widely used in water conservancy survey.The calculation method of CGCS2000 Geodetic Height Acquisition and height fitting based on FJCORS system in RTK survey mode was described in this paper.Combining with the example of our organization in Yunxiao Mountain Flood Disaster Survey Project,the abnormal elevation value was obtained by leveling elevation data and geodetic height.The elevation fitting accuracy of three different elevation points was analyzed using quadric surface fitting method,and then the reliability of the fitting accuracy was verified.The normal elevation could be obtained synchronously and real-time in field acquisition through FJCORS network RTK using elevation fitting parameters.The work efficiency could be improved when this method was applied to general hydraulic engineering survey.
作者
李凌斌
LI Ling-bin(Zhangzhou Water Conservancy and Hydropower Survey and Design Co.,Ltd.Zhangzhou Fujian 363000,China)
出处
《现代测绘》
2019年第6期43-46,共4页
Modern Surveying and Mapping
关键词
高程拟合
水利测量
拟合参数
elevation fitting
water conservancy survey
fitting parameters
作者简介
第一作者:李凌斌,测绘工程师,研究方向为水利测绘技术生产。
