Evaluation of Sprinkler Irrigation Uniformity by Double Interpolation Using Cubic Splines

摘要：

An evaluation method,with accompanying software,was developed to precisely calculate uniformity from catch-can test data,assuming sprinkler distribution data to be a continuous variable.This has value in assessing application uniformity of sprinkler irrigation designs.Two interpolation steps are required to compute unknown water application depths at grid distribution points from radial distribution of catch-cansdata: using both radial and peripheral interpolations,Interpolation by cubic splines was used to give accurately interpolated values.In theory,this method has higher accuracy compared with conventional methods of analysing catch-can data.Water application depths were calculated at each grid point and uniformity coefficients were computed from the grid distribution maps of water application depths.

关键词： sprinkler irrigation uniformity evaluation cubic splines double interpolation

作者: Han Wenting Fen Hao Wu Pute Yang Qing Chen Xiangwei

作者单位: Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water esources

会议类型: 国际会议

会议名称: International Conference on Effective Utilization of Agricultural Soil & Water Resources and Protection of Environment and the 4th Annual Academic Conference of Chinese Society of Agricultural Soil and Water Engineering

会议地点: 南京

会议语种:英文

页码: 250-255

在线出版日期: 2006-08-16（万方平台首次上网日期，不代表论文的发表时间）