多波束测深系统的高精度差分GPS数据实时优化  

Real-time correction of high-accuracy DGPS datafor the multibeam bathymetric survey

作　　者：赵洪伟[1] 杨胜雄[2] 张志荣[2] 彭朝旭[2] 关永贤[2] 

机构地区：[1]中国地质调查局,北京100083 [2]广州海洋地质调查局,广东广州510760

出　　处：《中国区域地质》2001年第4期411-414,421,共5页Regional Geology of China

基　　金：国家863计划820主题820-01-01课题资助。

摘　　要：多波束海底地形探测是目前世界上最为先进的海底地形探测方法。高精度的差分GPS定位是实现多波束系统高精度测深的最基本前提。在海上探测作业过程中,由于客观原因,差分GPS数据存在偶然误差,影响多波束测深精度。本文提出对差分GPS数据进行航速、航向平滑处理、误差定位点位置推算的实时优化方法和数学模型,并给出实际实现的例子。The multibeam bathymetric system is presently one of the most advanced methods in the world for marine bathymetric surveys. The use of a high-accuracy DGPS is the premise for getting the high-accuracy bathymetric data by multibeam echo sounding. In multibeam sounding the DGPS data may have some errors occasionally, which may lead to the error of the bathymetric data. In this paper, the authors provide some real-time correction methods and mathematical models for the DGPS data such as the ship speed smoothness, course smoothness and calculation of the destination positions. Some examples are given in the paper.

关 键 词：差分GPS定位 测深系统 多波束海底地形探测 数学模型 实时优化方法 

分 类 号：P229.1[天文地球—大地测量学与测量工程]