Porovnání přístrojů pro akustickou tomografii stromu

Tree acoustic tomography is one of the most widely used instrumental methods for tree stability assesment. This thesis compares the results of the three most used devices for acoustic tomography of standing trees (ARBOTOMâ, ARBORSONICâ a PICUSâ ) on selected individuals of Quercus robur L. in Brno, Brno-Soběšice, Czech Republic. According to the analysis of variance, there is a significant statistical difference between the values measured by the PICUS acoustic tomograph and the values measured by ARBOTOM and ARBORSONIC tomographs. Based on the measured data, it can be stated that PICUS measured velocities are considerably lower than those recorded by the other acoustic tomographs (ARBOTOM and ARBORSONIC). Image reconstructions (tomograms) from the three acoustic tomographs differ significantly from each other. According to the statistical correlation, it was found that there is no significant connection between sound velocity, density and humidity of wood