A timing discriminator design for space flight delay line image systems is presented. This discriminator processes delay line signal pulses having a few ns width and recovers event timing centroids with an accuracy better than 100 ps full width at half maximum. For space flight use, it is important to minimize parts count and power consumption. Because it is difficult or impossible to adjust eq...

Low-coherence self-referencing velocimetry optically measures the relative velocity between a point in a particle-laden fluid and a (potentially moving) reference surface. Low-coherence light scattered off the particles and off the reference surface is coupled into an interferometer with variable optical delay in one arm and an acousto-optical modulator in the second arm. The measurement locati...

The present article describes a reverberation instrument which is based on cognitive categorization of reverberating spaces. Different techniques for artificial reverberation will be covered. A multidimensional scaling experiment was conducted on impulse responses in order to determine how humans acoustically perceive spatiality. This research seems to indicate that the perceptual dimensions ar...