%0 Journal Article
%A ZHOU Feng-nian
%T Retrieving Suspended Sediment Concentration by Using Water Surface Points of Infrared Laser and Green Laser in Airborne LiDAR Bathymetry
%D 2019
%R 10.11988/ckyyb.20190455
%J Journal of Yangtze River Scientific Research Institute
%P 167-170
%V 36
%N 11
%X High-precision estimation of sediment concentration in water can be achieved by using the waveform data of airborne LiDAR bathymetry (ALB). However, waveform data is difficult to be obtained  and utilized. In view of this, a simple method to retrieve the sediment concentration using ALB 3D point cloud data is proposed. Firstly, the green laser water surface penetration is calculated based on the green laser water surface point and the infrared laser water surface point. Secondly, the empirical model of Suspended Sediment Concentration (SSC) is constructed by using the measured SSC and the corresponding green laser water surface penetration. Finally, the sediment content of the lower water body is obtained conveniently by the constructed SSC empirical model. Experimental results validate that the method is effective and has  the inversion accuracy of SSC better than 20 mg/L. The proposed method  provides a simple and fast approach to estimate SSC.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20190455