Robust coherent laser radar design and signal processing for vibrometry

Mille C. Millnert; Christina Carlsson; Christer Karlsson; Dietmar Letalick; Ingmar G. E. Renhorn

doi:10.1117/12.243545

26 June 1996 Robust coherent laser radar design and signal processing for vibrometry

Mille C. Millnert, Christina Carlsson, Christer Karlsson, Dietmar Letalick, Ingmar G. E. Renhorn

Proceedings Volume 2748, Laser Radar Technology and Applications; (1996) https://doi.org/10.1117/12.243545
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

A CO₂-ladar system is used for measurements. The signal from the system is a sinusoidal FM-modulated multi-component signal. To extract the modulating frequencies time-frequency representations, e.g., the Wigner-Ville distribution and the Choi-Williams distribution are used. The estimation method is applied both to simulated and real data. Estimation of the vibration frequencies is shown to be feasible even for low SNR, e.g., -4 db.

Citation Download Citation

Mille C. Millnert, Christina Carlsson, Christer Karlsson, Dietmar Letalick, and Ingmar G. E. Renhorn "Robust coherent laser radar design and signal processing for vibrometry", Proc. SPIE 2748, Laser Radar Technology and Applications, (26 June 1996); https://doi.org/10.1117/12.243545

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