Next Article in Journal
Determining Forest Duff Water Content Using a Low-Cost Standing Wave Ratio Sensor
Next Article in Special Issue
New Keypoint Matching Method Using Local Convolutional Features for Power Transmission Line Icing Monitoring
Previous Article in Journal
Surface Plasmon Resonance and Bending Loss-Based U-Shaped Plastic Optical Fiber Biosensors
Previous Article in Special Issue
Deep Learning-Based Gaze Detection System for Automobile Drivers Using a NIR Camera Sensor
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Sensors 2018, 18(2), 649; doi:10.3390/s18020649

Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours

School of Technology, Beijing Forestry University, Beijing 100083, China
Author to whom correspondence should be addressed.
Received: 22 January 2018 / Revised: 17 February 2018 / Accepted: 20 February 2018 / Published: 22 February 2018
(This article belongs to the Special Issue Sensors Signal Processing and Visual Computing)
View Full-Text   |   Download PDF [4534 KB, uploaded 22 February 2018]   |  


To assess the health conditions of tree trunks, it is necessary to estimate the layers and anomalies of their internal structure. The main objective of this paper is to investigate the internal part of tree trunks considering their irregular contour. In this respect, we used ground penetrating radar (GPR) for non-invasive detection of defects and deteriorations in living trees trunks. The Hilbert transform algorithm and the reflection amplitudes were used to estimate the relative dielectric constant. The point cloud data technique was applied as well to extract the irregular contours of trunks. The feasibility and accuracy of the methods were examined through numerical simulations, laboratory and field measurements. The results demonstrated that the applied methodology allowed for accurate characterizations of the internal inhomogeneity. Furthermore, the point cloud technique resolved the trunk well by providing high-precision coordinate information. This study also demonstrated that cross-section tomography provided images with high resolution and accuracy. These integrated techniques thus proved to be promising for observing tree trunks and other cylindrical objects. The applied approaches offer a great promise for future 3D reconstruction of tomographic images with radar wave. View Full-Text
Keywords: ground-penetrating radar (GPR); non-destructive testing; tree trunk; internal structure estimation ground-penetrating radar (GPR); non-destructive testing; tree trunk; internal structure estimation

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Li, W.; Wen, J.; Xiao, Z.; Xu, S. Application of Ground-Penetrating Radar for Detecting Internal Anomalies in Tree Trunks with Irregular Contours. Sensors 2018, 18, 649.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top