Photon Doppler Velocimetry, PDV
Photon Doppler Velocimetry (PDV) is a one-dimensional Fourier transform analysis of a heterodyne laser interferometry signal. It was developed at Lawrence Livermore National Laboratory. PDV is often used in the shock physics community as an adjunct or replacement for VISAR in the instrumentation of high-strain-rate events. Contemporary data acquisition technology and the availability of robust single-frequency lasers now leverage the assembly of these systems within reasonable budgets. Read more