中长距离水运工程高精度潮位获取技术  

Technology of high-precision tidal level acquisition in medium and long distance port&waterway engineering

作　　者：刘宏[1] 王朝金[1] LIU Hong;WANG Chao-jin(Shanghai Dahua Surveying&Mapping Co.,Ltd.,Shanghai 200136,China)

机构地区：[1]上海达华测绘有限公司,上海200136

出　　处：《中国港湾建设》2020年第11期28-32,37,共6页China Harbour Engineering

摘　　要：为解决远离岸线的水运工程的高精度潮位获取难题,通过研究顾及海洋水汽的中长距离GNSS定位原理、方法藕合的潮位提取算法,开发相关软件,利用基于GPS与BDS的PPK技术测量出GNSS天线处瞬时三维坐标,并结合其在船体坐标系下的坐标获得海面的瞬时高程,通过傅立叶变换,小波滤波等滤波处理,经过垂直基准的转换,最终得到在航潮位。经过多次测试和实际应用表明,中长距离水域采用PPK技术定位和获取潮位,精度满足水运工程水深测量等作业的平面定位和潮位要求。In order to solve the problem of obtaining high-precision tidal level in the port&waterway engineering far from the coast,the principle of medium and long distance GNSS positioning considering ocean water vapor,and the method coupled tide level extraction algorithm were studied and related software were developed.The instantaneous three-dimensional coordinates of GNSS antenna were measured by using PPK technology based on GPS and BDS,the instantaneous elevation of the sea surface was obtained by combining its coordinates in the hull coordinate system,the tide level in navigation was finally obtained through the Fourier transforming,wavelet filtering,and the conversion of the vertical datum.It has been proved by many tests and practical application that the accuracy of PPK technology in locating and acquiring tidal level in the medium and long distance waters can meet the requirements of horizontal positioning and tidal level in port&waterway engineering.

关 键 词：中长距离 水运工程 潮位获取 GNSS PPK 垂直基准转换 

分 类 号：U652.62[交通运输工程—港口、海岸及近海工程] U652.3[交通运输工程—船舶与海洋工程]