红外与毫米波学报2025，Vol.44Issue(6)：856-864,9.DOI:10.11972/j.issn.1001-9014.2025.06.004
基于蝙蝠算法高斯锐化的星载全波形激光雷达滤波处理技术研究
Research on spaceborne full-waveform LiDAR filtering processing technology based on bat algorithm Gaussian sharpening
摘要
Abstract
Spaceborne full-waveform LiDAR,as an advanced remote sensing technology,has been widely applied in various fields due to its ability to record detailed terrain and vegetation information.However,the data from spaceborne full-waveform LiDAR can be affected by factors such as dark current,performance of photodetectors,the surrounding environment of the target being detected,and the background light during the acquisition process.These factors intro-duce significant noise into the original waveform signals,interfering with the extraction of effective echo information for target inversion analysis.To address the common problem of waveform amplitude reduction in existing classical fil-tering algorithms,this paper proposes an adaptive filtering compensation method for waveform amplitude.By utilizing the bat algorithm to optimize Gaussian sharpening operator parameters and convolving the Gaussian sharpening operator with the filtered waveform data,waveform compensation is achieved through adaptive iteration to ensure optimal com-pensation effects.This paper conducts experimental verification on GEDI(Global Ecosystem Dynamics Investigation)echo data,comparing the proposed method with various filtering algorithms.After filtering,the highest peak amplitude was reduced by an average of 9.0077 counts,while the difference between the highest peaks of the waveform after Gaussian sharpening compensation and the original waveform was only 0.0182 counts on average.Moreover,the aver-age signal-to-noise ratio improved from 30.0235 dB to 33.2609 dB,representing a relative increase of 10.78%.The re-sults indicate that this method,in conjunction with filtering methods,can remove noise while retaining more original waveform feature information.This provides more accurate data for further extraction of waveform information for geo-physical parameter inversion and target classification and is applicable to a variety of filtering methods.关键词
星载激光雷达/全波形/高斯锐化/蝙蝠算法/滤波Key words
spaceborne LiDAR/full waveform/Gaussian sharpening/bat algorithm/filtering分类
信息技术与安全科学引用本文复制引用
方强,王虹,何光辉,周政宇,曹峰玮,宋庆和..基于蝙蝠算法高斯锐化的星载全波形激光雷达滤波处理技术研究[J].红外与毫米波学报,2025,44(6):856-864,9.基金项目
国家自然科学基金(62165007) Supported by the National Natural Science Foundation of China(62165007) （62165007）
