一种针对ADCP单ping流速数据的质量控制方法研究  

A research on the quality control method of ADCP single ping flow velocity data

作　　者：姜德良 陈献 张胜军 刘刚 JIANG Deliang;CHEN Xian;ZHANG Shengjun;LIU Gang(91937 Troops,Zhoushan 316000,China)

机构地区：[1]91937部队,浙江舟山316000

出　　处：《海洋测绘》2023年第1期29-33,共5页Hydrographic Surveying and Charting

摘　　要：针对TRDI公司生产的ADCP数据后处理问题,以转换至大地坐标系的.ENX格式原始数据文件为对象,提出了直接对单ping流速数据进行质量控制的处理思路。选择具有代表性的样本数据,经对比发现VTG格式的GPS地面速度信息质量优于GGA格式信息。利用VTG船速计算绝对流速,通过对比处理效果与进行显著性检验,发现箱线图法对异常值的判别效果最好。将箱线图法处理后数据按照时间间隔进行平均,并与同样本的平均数据文件比对流速的平滑性,结果表明前者的数据质量优于后者。Focusing on the post-processing of ADCP data produced by TRDI company,the paper takes the.ENX format original data file which has been converted to the geodetic coordinate system as the object,and proposes a processing idea to directly control the quality of single-ping flow velocity data.Selecting representative sample data,it is found that the quality of GPS speed information in VTG format is better than that in GGA format.U-sing VTG ship speed to calculate the absolute flow velocity,the paper compares the processing effect and carries out the significance test,which shows that the Boxplot method has the best discriminating effect on outliers.The data processed by the Boxplot method were averaged according to time intervals,the smoothness of the flow rate was compared with the average data file of the same sample.The results showed that the data quality of the former was better than that of the latter.

关 键 词：海流测量 声学多普勒海流剖面仪 质量控制 单ping数据 显著性检验 

分 类 号：P229.7[天文地球—大地测量学与测量工程]