MyJournals Home  

RSS FeedsSensors, Vol. 19, Pages 5065: A Depth-Adaptive Waveform Decomposition Method for Airborne LiDAR Bathymetry (Sensors)


20 november 2019 14:03:41

Sensors, Vol. 19, Pages 5065: A Depth-Adaptive Waveform Decomposition Method for Airborne LiDAR Bathymetry (Sensors)

Airborne LiDAR bathymetry (ALB) has shown great potential in shallow water and coastal mapping. However, due to the variability of the waveforms, it is hard to detect the signals from the received waveforms with a single algorithm. This study proposed a depth-adaptive waveform decomposition method to fit the waveforms of different depths with different models. In the proposed method, waveforms are divided into two categories based on the water depth, labeled as “shallow water (SW)” and “deep water (DW)”. An empirical waveform model (EW) based on the calibration waveform is constructed for SW waveform decomposition which is more suitable than classical models, and an exponential function with second-order polynomial model (EFSP) is proposed for DW waveform decomposition which performs better than the quadrilateral model. In solving the model’s parameters, a trust region algorithm is introduced to improve the probability of convergence. The proposed method is tested on two field datasets and two simulated datasets to assess the accuracy of the water surface detected in the shallow water and water bottom detected in the deep water. The experimental results show that, compared with the traditional methods, the proposed method performs best, with a high signal detection rate (99.11% in shallow water and 74.64% in deep water), low RMSE (0.09 m for water surface and 0.11 m for water bottom) and wide bathymetric range (0.22 m to 40.49 m).

98 viewsCategory: Chemistry, Physics
Sensors, Vol. 19, Pages 5066: Simplifying Sample Preparation for Soil Fertility Analysis by X-ray Fluorescence Spectrometry (Sensors)
Sensors, Vol. 19, Pages 5064: A Gyroscope Signal Denoising Method Based on Empirical Mode Decomposition and Signal Reconstruction (Sensors)
blog comments powered by Disqus
The latest issues of all your favorite science journals on one page


Register | Retrieve



Copyright © 2008 - 2020 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Nachrichten