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Proceedings Paper

Detecting target velocity and location using a novel optoelectronic sensing system
Author(s): Chi Ching Chang
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Paper Abstract

We propose a cost-effective, compact, and robust optoelectronic sensing system for measuring ballistic impact velocity and distribution of the projectile motion. The key elements consisted of this system are four photo-gates hybridized by compound one-dimensional prism array and analog/digital electronic components. The number of light sources and photodetectors used in a photo-gate was reduced to one pair of that. The time interval passing each pair can be measured precisely (~10-8 s). The average velocity and location of projectile are carried out according the measured time intervals. The system can precisely measure the velocity of a bullet as it leaves a gun barrel and the velocity toward the trajectory outside the firearm. Furthermore, the system uses a commonly found low-powered laser pointer as light source. Compared with other optoelectronic sensing systems that use high-powered lasers, our system is both economical and safe.

Paper Details

Date Published: 6 December 2004
PDF: 8 pages
Proc. SPIE 5612, Electro-Optical and Infrared Systems: Technology and Applications, (6 December 2004); doi: 10.1117/12.571804
Show Author Affiliations
Chi Ching Chang, National Defense Univ. (Taiwan)


Published in SPIE Proceedings Vol. 5612:
Electro-Optical and Infrared Systems: Technology and Applications
Ronald G. Driggers; David A. Huckridge, Editor(s)

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