Trees are a part of our everyday life, hence it is important to prevent their collapse to protect people and urban infrastructures. It is also important to characterize tree wood properties for usages in construction. In order to investigate internal parts of tree trunks non-invasively, ground-penetrating radar (GPR), or in this case, ultra-wideband microwave radar as a general tool, appears to be a very promising technology.
Jezova, J., & Lambot, S. (2016). Observing of tree trunks and other cylindrical objects using GPR. Geophysical Research Abstracts, vol.18. Published. European Geosciences Union (EGU) General Assembly, Vienna (Austria). https://hdl.handle.net/2078.5/219077