海洋测绘2018，Vol.38Issue(1)：35-38,4.DOI:10.3969/j.issn.1671-3044.2018.01.009
一种机载激光雷达海洋测深波形数据处理算法
An Airborne Laser Bathymetric Waveform Data Processing Algorithm
摘要
Abstract
Airborne LiDAR bathymetry technology has distinct advantages in seabed topography surveying in coastal zone.The waveform decomposition of detecting data is a key step in waveform processing.Based on the iterative global convergence LM (Levenberg Marquardt) algorithm,concerning the characteristics of the waveform in near infrared,shallow and deep water channels,the algorithm is improved by a set of hierarchical filtering strategy.The influence of the noise is reduced effectively with the reasonable parameters of amplitude and half width threshold,and the echoes from both bottom and surface of the sea are precisely detected.Experimental results in the test area show that the proposed echo detection method reaches 98％ of the effective rate and 87％ of the successful rate.关键词
激光雷达测深/波形分解/高斯分解/全局收敛LM/分层筛选Key words
LiDAR bathymetry/waveform decomposition/gaussian decomposition/iterative global convergence LM/hierarchical filtering分类
天文与地球科学引用本文复制引用
张鑫磊,邢帅,王丹菂,李鹏程..一种机载激光雷达海洋测深波形数据处理算法[J].海洋测绘,2018,38(1):35-38,4.基金项目
国家自然科学基金(41371436). （41371436）
