机载激光雷达全波形数据与系统点云差异的定量分析

卢昊; 庞勇; 徐光彩; 李增元

doi:10.13203/j.whugis20130443

机载激光雷达全波形数据与系统点云差异的定量分析

¹中国林业科学研究院资源信息研究所,北京,100091

基金项目: 国家973计划资助项目(2013CB733404,2013CB733406)；国家863计划资助项目(2012AA12A306)

详细信息

作者简介:
卢昊,博士生,现从事全波形机载激光雷达软件研发与森林参数反演方面的研究。

中图分类号: P237.3;TP751
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出版历程
- 收稿日期: 2013-08-28
- 修回日期: 2015-05-04
- 发布日期: 2015-05-04

Quantitative Analysis of Differences Between Full Waveform Data and System Point Cloud Data from Airborne LiDAR

¹Institute of Forest Resources Information Techniques,Chinese Academy of Forestry,Beijing 100091,China

Funds: The National 973Program of China,Nos.2013CB733404,2013CB733406;the National 863Program of China,No.

More Information

Author Bio:
LU Hao: 国家973计划资助项目(2013CB733404,2013CB733406);国家863计划资助项目(2012AA12A306)

摘要

摘要: 目前常用的小光斑机载LiDAR波形数据与系统点云数据的来源相关性较大,波形数据的优势难以严格定量地评价和比较。LeicaALS60机载LiDAR系统记录的全波形数据与点云数据相对独立,点云数据来自硬件系统脉冲探测方法,而波形数据是未加处理的原始回波序列。本文对原始波形数据进行分解获取发射脉冲的全部回波,与系统探测点云进行了定量对比,并选取典型林区和城区数据,得到波形在两种地物类型中垂直信息获取能力的定量表征参数。结果表明,波形数据对不同地物类型均能丰富垂直结构信息和提高点云垂直分辨率,且这种提高在林区表现优于城区人工建筑和裸地;激光对树木冠层的穿透能力更明显地表现在回波波形信息中,相较于传统点云激光雷达,全波形LiDAR在森林垂直参数获取方面潜力更大。
- 全波形 /
- 点云 /
- LiDAR /
- 高斯分解 /
- 垂直结构 /
- 统计决策树 /
- 定量化 /
- 信息熵
Abstract: The superiority of waveform data is hard to evaluated and compared with point clouds quan-titatively due to a high correlation between two data sources from the most commonly used LiDARsystems.Leica ALS60airborne LiDAR system can record both of discrete return data and waveformdata simultaneously and independently.The raw waveforms are decomposed into individual pulse re-turns and compared with the laser points from the hardware system quantitatively.Data from typicalforest and urban areas are picked to perform a digitized assessment of the capability of waveform.Theresults show that waveform data can increase the vertical information in different types of ground ob-jects and spatial resolution of point cloud at a certain level and that the increment in forest area is high-er than that of urban area and bare earth.It is concluded that the penetration capability of laser pulseis more evident in full waveform data than in point cloud from ALS system itself,and that full wave-form LiDAR has much more potential in constructing the vertical parameters in the forest areas thanoriginal LiDAR with only point clouds.
- full waveform /
- point cloud /
- LiDAR /
- Gaussian decomposition /
- vertical structure /
- statisti-cal decision tree /
- quantification /
- information entropy

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参考文献(1)

[1]

Ackmann F.Airborne Laser Scanning-Present Sta-tus and Future Expectations[J].ISPRS Journal ofPhotogrammetry and Remote Sensing,1999,54:64-67[2] Lefsky M A.LiDAR Remote Sensing of the CanopyStructure and Biophysical Properties of Douglas-firwestern Hemlock Forests[J].Remote Sensing ofEnvironment,1999,70(3):339-361[3] Baltsavias E P.A Comparison Between Photogram-metry and Laser Scanning[J].ISPRS Journal ofPhotogrammetry and Remote Sensing,1999,54:83-94[4] Wagner W.Gaussian Decomposition and Calibrationof a Novel Small-Footprint Full-Waveform Digitis-ing Airborne Laser Scanner[J].ISPRS Journal ofPhotogrammetry and Remote Sensing,2006,61:100-112[5] Mallet C.Full-Waveform Topographic Lidar:State-of-the-Art[J].ISPRS Journal of Photogrammetryand Remote Sensing,2009,64:1-16[6] Wagner W.From Single-Pulse to Full WaveformAirborne Laser Scanners:Potential and PracticalChallenges[C].ISPRS Congress,Istanbul,2009[7] IGI Gmb H.LiteMapper 6800User Manual[S].Germany:IGI,2010[8] ASPRS.LAS Specification Version 1.3-R10[S].USA:ASPRS,2010[9] Ma Hongchao,Li Qi.Modified EM Algorithm andIts Application to the Decomposition of Laser Scan-ning Waveform Data[J].Journal of Remote Sens-ing,2009,13(1):35-41[10] Pang Yong,Li Zengyuan,Sun Guoqing,et al.Li-DAR Remote Sensing Technology and Its Applica-tion in Forestry[J].Scientia Silvae Sinicae,2005,41(3):129-136(庞勇,李增元,孙国清,等.激光雷达技术及其在林业上的应用[J].林业科学,2005,41(3):129-136)[11] Pang Yong,Li Zengyuan,Chen Erxue,et al.For-est Height Inversion Using Airborne LiDAR Tech-nology[J].Journal of Remote Sensing,2008,12(1):152-158(庞勇,李增元,陈尔学,等.机载激光雷达平均树高提取研究[J].遥感学报,2008,12(1):152-158)[12] Li Qi,Ma Hongchao.The Study of Point-cloudProduction Method Based on Waveform Laser Scan-ner Data[J].Acta Geodaetica et CartographicaSinica,2008,37(3):349-354(李奇,马洪超.基于激光雷达波形数据的点云产生[J].测绘学报,2008,37(3):349-354)[13] Zhou Mengwei,Liu Qinhuo.Inversion for CropHeight by Small-Footprint-Waveform Airborne Li-DAR[J].Transactionso f the CSAE,2010,26(8):183-188(周梦维,柳钦火.基于机载小光斑全波形LIDAR的作物高度反演[J].农业工程学报,2010,26(8):183-188)[14] Hofton M A,Minster J B,Blair J B.Gaussian De-composition of Laser Altimeter Waveforms[J].IEEE Transactions on Geoscience and Remote Sens-ing,2000,38:1 989-1 996

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机载激光雷达全波形数据与系统点云差异的定量分析

作者简介: 卢昊,博士生,现从事全波形机载激光雷达软件研发与森林参数反演方面的研究。

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出版历程

Quantitative Analysis of Differences Between Full Waveform Data and System Point Cloud Data from Airborne LiDAR

Author Bio: LU Hao: 国家973计划资助项目(2013CB733404,2013CB733406);国家863计划资助项目(2012AA12A306)

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目录

作者简介:
卢昊,博士生,现从事全波形机载激光雷达软件研发与森林参数反演方面的研究。

Author Bio:
LU Hao: 国家973计划资助项目(2013CB733404,2013CB733406);国家863计划资助项目(2012AA12A306)