Large spot size laser vibrometry insensitivity occurs in 1-D vibrations only

Michael C. Kobold

doi:10.1117/12.778778

6 May 2008 Large spot size laser vibrometry insensitivity occurs in 1-D vibrations only

Michael C. Kobold

Proceedings Volume 6968, Signal Processing, Sensor Fusion, and Target Recognition XVII; 69681J (2008) https://doi.org/10.1117/12.778778
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

An envelope of two approximations forms a plane wave coherent laser vibrometry calculation set that indicates mechanisms of measured and simulated spectral "reduction." Path length differences modulate large spot size continuous wave laser return leading to structural mode sensing (not a random signal issue). Calculations for sine swept and multi-modal approximations show vibrating rectangular plates constrained on all edges have return that varies substantially with low frequency vibration modes, providing modal recognition and ID not available with 1-D modes (strips or bars).

Citation Download Citation

Michael C. Kobold "Large spot size laser vibrometry insensitivity occurs in 1-D vibrations only", Proc. SPIE 6968, Signal Processing, Sensor Fusion, and Target Recognition XVII, 69681J (6 May 2008); https://doi.org/10.1117/12.778778

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available