摘要
走航式ADCP在河流流量测验中得到广泛运用,但当河床存在走沙现象时,"底跟踪"模式下流量测验受影响显著。该文从ADCP的流量计算原理及误差成因出发,提出用计算航迹偏移量的方法来推算河床走沙影响的流量偏小值,以完成对"底跟踪"流量的修正,为无GPS定位条件下,使用ADCP获得可靠流量数据提供一种新的计算方法。
Vessel-mounted ADCP has been widely used in river discharge measurement , but when the riverbed exist quicksand phenomenon , the＂Bottom tracking＂flow test will be affected significantly .A method that calculated the cross track distance to reckon the small flow rate is evaluated by the riverbed quicksand impact .The flow rate principles and causes of errors starting from ADCP are calculated to complete the ＂bottom track＂flow amendments .A new computational method is discussed to obtain reliable ADCP flow data without GPS positioning conditions .
出处
《广东水利水电》
2014年第8期84-86,共3页
Guangdong Water Resources and Hydropower
关键词
ADCP
底跟踪
走沙
误差修正
ADCP
bottom tracking
quicksand
error correction
