Advanced

Statistical Signal Processing of Ultrasonic Signals in Norway Spruce Infected by Root and Butt Rot

Tonteri, Annika LU and Aliu, Aferdita (2011) EEM820 20112
Department of Biomedical Engineering
Abstract
Root and butt rot in Norway spruce is costly for the forest industry and finding alternative noninvasive, efficient and cheap methods is thus of great interest. Detection of root and butt rot in Norway Spruce by analysis of an ultrasonic signal sent through standing trees could be a good alternative method. Data from Chirp-signals and sinus-waves, sent through both healthy and contaminated wood, has been used. The differences in the measured signals from the specimen, using both types of signals were analyzed with regard to their velocities and energy content. In addition the results from chirp measurements were used to analyze the differences in frequency content between healthy and contaminated wood.
Please use this url to cite or link to this publication:
author
Tonteri, Annika LU and Aliu, Aferdita
supervisor
organization
course
EEM820 20112
year
type
H2 - Master's Degree (Two Years)
subject
language
English
additional info
2011-11
id
2293579
date added to LUP
2012-01-12 09:58:14
date last changed
2014-10-08 14:46:51
@misc{2293579,
  abstract     = {Root and butt rot in Norway spruce is costly for the forest industry and finding alternative noninvasive, efficient and cheap methods is thus of great interest. Detection of root and butt rot in Norway Spruce by analysis of an ultrasonic signal sent through standing trees could be a good alternative method. Data from Chirp-signals and sinus-waves, sent through both healthy and contaminated wood, has been used. The differences in the measured signals from the specimen, using both types of signals were analyzed with regard to their velocities and energy content. In addition the results from chirp measurements were used to analyze the differences in frequency content between healthy and contaminated wood.},
  author       = {Tonteri, Annika and Aliu, Aferdita},
  language     = {eng},
  note         = {Student Paper},
  title        = {Statistical Signal Processing of Ultrasonic Signals in Norway Spruce Infected by Root and Butt Rot},
  year         = {2011},
}