Air-Coupled Ultrasound Resonant Spectroscopy Sensitivity Study in Plant Leaf Measurements

The ultrasound resonant spectroscopy has proved itself as a useful tool in the plant physiology studies. Plant leaf physical parameters can be measured using air-coupled ultrasound non-invasively and on-site. Results are obtained by fitting the measured response to layer propagation model. Yet, influence of the parameters used in inverse solution calculation were never considered. Paper presents the sensitivity analysis to parameters used: speed of sound in the air and air density. Evaluation was done using simulation. The errors of sample thickness, density and ultrasound velocity in the sample due to not accounting deviations of the ambient air temperature and atmospheric pressure from normal conditions are reported.