Noncontact ballistic motion measurement using a fiber-optic confocal sensor

Journal Article · Tue May 01 00:00:00 EDT 2007 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2728764· OSTI ID:20982840

Shafir, E; Berkovic, G; Horovitz, Y; Appelbaum, G; Moshe, E; Horovitz, E; Skutelski, A; Werdiger, M; Perelmutter, L; Sudai, M ^[1]

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1. Electro-Optics Division, Soreq NRC, Yavne 81800 (Israel)

A fiber-optic confocal sensor for noncontact ballistic measurements is described. Determination of motion at velocities of 1.7 km/s with an uncertainty as small as {+-}0.3% is demonstrated for both a projectile and a free-surface target. The fibers detect the passage of the object at their conjugate image points created by low F/ optics. This results in an output signal comprising a train of sharp pulses each precisely identifying when the ballistic object traverses an image point. Since the ballistic object does not contact the sensor at the time of imaging, the measurements do not perturb the motion, enabling multi-fragment measurement, as well as repetitive measurements of the same object point.

• OSTI ID: 20982840
• Journal Information: Journal of Applied Physics, Vol. 101, Issue 9; Other Information: DOI: 10.1063/1.2728764; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FIBER OPTICS
IMAGES
OPTICAL MICROSCOPY
SENSORS
SIGNALS