文章摘要
彭东立,汤鑫,章寿涛.ADCP测量水深的过滤与插值方法[J].声学技术,2020,39(4):501~504
ADCP测量水深的过滤与插值方法
The filtering and interpolation method of ADCP for measuring water depth
投稿时间:2020-01-17  修订日期:2020-03-02
DOI:10.16300/j.cnki.1000-3630.2020.04.020
中文关键词: 声学多普勒流速剖面仪  深度过滤  深度插值
英文关键词: acoustic Doppler current profiler (ADCP)  depth filtering  depth interpolation
基金项目:
作者单位E-mail
彭东立 江苏中海达海洋信息技术有限公司, 江苏南京 211800  
汤鑫 江苏中海达海洋信息技术有限公司, 江苏南京 211800 meomoeeinstein@sina.cn 
章寿涛 江苏中海达海洋信息技术有限公司, 江苏南京 211800  
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中文摘要:
      声学多普勒流速剖面仪(Acoustic Doppler Current Profiler,ADCP)对河道流量进行测量有赖于准确的深度测量,在遇到错误的深度测量时应采用合理的数值对错误帧进行深度插值,以增加计算准确度。文章分析了ADCP在斜坡河底环境下进行深度测量的理论标准差,在此基础上提出了使用四波束深度标准差与平均值的比值来进行深度过滤的新方法,并采用对历史保存的深度测量值进行拟合预测计算,为无效帧进行更为准确的深度插值。该方法相对于以往的水深过滤方法,进一步的增加了对水深异常值的过滤能力,提高了流量的计算精度。
英文摘要:
      The measurement of the river discharge by acoustic Doppler current profiler (ADCP) depends on the accurate depth measurement. In the case of wrong depth measurement, the reasonable value should be used to interpolate the depth for the wrong frame to increase the calculation accuracy. Based on the analysis of the theoretical standard deviation of depth measurement by ADCP in the slope river bottom environment, a new method using the ratio of four-beam depth standard deviation to average value for depth filtering is proposed in this paper, and the preserved depth measurement values are used for fitting and prediction calculation, by which, the accuracy of depth interpolation for the invalid frame is improved. Compared with the previous depth filtering methods, this method further increases the filtering ability of depth out-liers and improves the calculation accuracy of discharge.
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