Abstract

Vibration sensing has many applications. In particular, remote vibrometry using laser-based sensors can provide non-contact information in scenarios for which access to the surface under test is difficult or impossible. There are several factors that impact the signal that is measured in such cases. We investigate through simulation the effects of line of sight of the remote vibrometer with respect to the surfaces under test. We find that the spectral estimates exhibit variations and in addition there are significant changes in the amplitude of the estimates. Such variations need to be included in any assessment of signature and feature separability.

© 2013 Optical Society of America