Digital processing of an interferometric velocimeter for ballistic shock measurement

Modern Metrology Concerns

“…This interferometric wavelength discriminator has been used to interrogate and multiplex a network of fiber Bragg grating sensors (Johnson et al, 2000) and as a velocity sensor which measures the Doppler shift in the light reflected from a moving surface (Fabiny & Kersey, 1997). We have also used this system as a Doppler velocimeter to measure the motion of armored plates experiencing ballistic shock (Kumar et al, 2009). Fig.…”

“…6. Interferometric velocimeter based on a 3x3 fiber coupler and homodyne demodulation technique (Kumar et al, 2009).…”

“…Specific examples will be cited throughout the literature as well as from our own research. Our research in digital demodulation techniques include applications in myofibroblast cell contraction (Kern et al, 2003), ballistic shock characterization (Kumar et al, 2009), and down-hole oil well drilling. In addition, we present a new (unpublished) digital demodulation algorithm.…”