Assessment of the Accuracy of a Multi-Beam LED Scanner Sensor for Measuring Olive Canopies

Sensors

Antonio Rodríguez-Lizana¹  JesúsA. Gil-Ribes²  Sergio Bayano-Tejero²  Antonio Miranda-Fuentes²  RafaelR. Sola-Guirado² 

[1] Aerospace Engineering and Fluid Mechanics Department, University of Seville, Ctra. de Utrera km 1, 41013 Sevilla, Spain;Rural Engineering Department, University of Cordoba. Ed. Leonardo da Vinci, Campus Rabanales, Ctra. Nacional IV, km 396, 14014 Córdoba, Spain;

关键词: laser scanner;    accuracy test;    high-growing crops;    canopy characterization;    olive orchards;    agricultural work;   

DOI  :  10.3390/s18124406

来源: DOAJ

【 摘 要 】

Canopy characterization has become important when trying to optimize any kind of agricultural operation in high-growing crops, such as olive. Many sensors and techniques have reported satisfactory results in these approaches and in this work a 2D laser scanner was explored for measuring canopy trees in real-time conditions. The sensor was tested in both laboratory and field conditions to check its accuracy, its cone width, and its ability to characterize olive canopies in situ. The sensor was mounted on a mast and tested in laboratory conditions to check: (i) its accuracy at different measurement distances; (ii) its measurement cone width with different reflectivity targets; and (iii) the influence of the target’s density on its accuracy. The field tests involved both isolated and hedgerow orchards, in which the measurements were taken manually and with the sensor. The canopy volume was estimated with a methodology consisting of revolving or extruding the canopy contour. The sensor showed high accuracy in the laboratory test, except for the measurements performed at 1.0 m distance, with 60 mm error (6%). Otherwise, error remained below 20 mm (1% relative error). The cone width depended on the target reflectivity. The accuracy decreased with the target density.

【 授权许可】

Unknown