A Vehicle-Based Laser System for High-Resolution DEM Development – Performance Evaluation of System Components

Canadian Biosystems Engineering

article

Peng Li¹  Naiqian Zhang¹  Larry E. Wagner²  Fred Fox²  Darrell Oard¹  Hubert Lagae²  Mingqiang Han¹ 

[1] Department of Biological and Agriculture Engineering, Kansas State University;USDA-Agricultural Research Service

关键词: Micro topography;    Digital Elevation Model;    Laser LineScanner;    Gyroscope Sensor.;   

DOI  :  10.7451/CBE.2021.63.2.23

学科分类：农业科学（综合）

来源: Canadian Society of Agricultural Engineering

【 摘 要 】

Surface microtopography is quantified by the deviations inthe direction of the normal vector of the surface. Soilmicrotopography is a major factor influencing soil erosionby water and wind. Surface microtopography can beaccurately described using the Digital Elevation Model(DEM). In this study, a vehicle-based laser system wasdeveloped to generate high-resolution DEM data. Thesystem consisted of five major components: a laser linescanner, a gyroscope sensor, a real-time kinematic GPS, aframe-rail mechanism, and a data acquisition and controlunit.A series of experiments were conducted in thelaboratory to evaluate the performance of the components.The result of distance measurements indicated that thesystem gave the most consistent distance measurement on awhite paper. Static gyroscope sensor accuracy tests showedthat angle measurement errors observed in combinedpitch/roll rotations were larger than in single rotations.Within ±30º of single rotations, the measurement errors forpitch and roll angles were within 0.8º and 0.4º, respectively.The tests of the angular displacement on the linear railshowed that it slightly tilted towards the laser line scannerwhen it moved along the rail.

【 授权许可】

CC BY