Current status of the acquisition and processing of airborne laser sounding data

doi:10.6046/zrzyyg.2022436

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Abstract

As an essential branch of surveying and mapping science, underwater topographic surveys are closely related to human operations in oceans and lakes. For underwater topography detection in shallow-water areas, conventional acoustic methods face the hull stranding risk, and passive optical methods have low survey accuracy. The airborne laser sounding is a novel means for bathymetric surveys in shallow-water areas, and its application in offshore areas can fill the gap of underwater topography data in shallow-water areas. This study presents a brief introduction to the composition and principle of the airborne laser sounding system, followed by a description of laser sounding data acquisition. Furthermore, this study highlights the critical processing technologies for airborne laser sounding data, including waveform data processing, error correction, and point cloud data processing. Finally, this study summarizes the technical difficulties and developmental trends of airborne laser sounding.

Keywords airborne laser sounding laser sounding data acquisition waveform data processing error correction point cloud data processing

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Issue Date: 19 September 2023

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	Ziwei CUI
	Wenxue XU
	Yanxiong LIU
	Yadong GUO
	Xiangqian MENG
	Zhengkun JIANG

Cite this article:

Ziwei CUI,Wenxue XU,Yanxiong LIU, et al. Current status of the acquisition and processing of airborne laser sounding data[J]. Remote Sensing for Natural Resources, 2023, 35(3): 1-9.

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https://www.gtzyyg.com/EN/10.6046/zrzyyg.2022436 OR https://www.gtzyyg.com/EN/Y2023/V35/I3/1

Fig.1 Schematic diagram of the airborne LiDAR bathymetry system

Fig.2 Schematic diagram of the principle of single-wavelength airborne LiDAR bathymetry

Fig.3 In-situ optical reflectance spectra of various substrates^[17]

Fig.4 Flowchart of airborne LiDAR bathymetry data acquisition

Fig.5 Flowchart of airborne LiDAR bathymetry data processing

Tab.1 Error analysis of airborne LiDAR bathymetry

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