基于数据滤波算法处理地形陡变区域方法研究  

The processing method of steep regions based on data filtering algorithm

作　　者：樊小涛 杨柳 金奇 FAN Xiaotao;YANG Liu;JIN Qi(Bureau of Hydrology and Water Resources Survey of the Upper Yangtze River,Chongqing 400021,China;Hydrology Bureau of Yangtze River Water Resources Commission,Wuhan,Hubei 610095,China)

机构地区：[1]长江水利委员会水文局长江上游水文水资源勘测局,重庆400021 [2]长江水利委员会水文局,湖北武汉610095

出　　处：《测绘标准化》2024年第2期74-80,共7页Standardization of Surveying and Mapping

基　　金：长江水利委员会水文局科研项目(SWJ-24CJX18)。

摘　　要：数据滤波是多波束数据处理过程中非常重要的环节,但在地形陡变区域,数据滤波处理常常存在“误判、误删”现象,从而导致地形失真。本文通过分析多波束测深误差来源及数据处理流程,得出影响测深点精度的主要因素,进而提出利用C UBE算法对地形陡变区域进行精细处理方法,并总结得出CUBE参数设置的特性与要点。通过对金沙江某水域使用多波束采集的数据进行试验验证,结果表明,数据滤波处理通过对CUBE参数的有效设定,可降低人工编辑强度,提高数据处理精度和多波束处理的效率。Data filtering is a very important step in multi-beam data processing,while there always exists 11 misjudge,delete by mistake II in the terrain abrupt change area,and results in distortion.This paper finds out the main factors affecting the accuracy of sounding points by analyzing the source of multi-beam sounding error and the data processing,then proposes a fine processing method of CUBE algorithm for the terrain abrupt change area,and summarizes the characteristics and key points of CUBE parameter setting.Meanwhile,multi-beam data collected in a water area of the Jinsha River is tested and verified.The results show that the effective setting of CUBE parameters can reduce the intensity of manual editing,improve the accuracy of data processing and the efficiency of multi-beam processing.

关 键 词：多波束测深系统 测深数据 CUBE算法 异常值 滤波 

分 类 号：P217[天文地球—测绘科学与技术]