A novel method of measuring flight trajectory for projectile was proposed. Seven light screen target (LST) was made up
of two laser sources, two optical detectors and five pieces of mirror, which can measure the flight parameters including
trajectory, direction and component velocity of three directions. The double Z-shaped LST was formed by laser light
which was reflected by four pieces of parallel mirror, while the V-shaped LST was formed by laser light which was
reflected by one piece of mirror. The cross points can be obtained by measuring the time when the projectile passing
through every light screen. A principle experiment was done on a smooth plane table using a laser pen, four pieces of
mirror and photodiode circuit by launching a steel ball. Velocity and position compare experiments were done
simultaneously. The relative difference of velocity measurement was less than 0.2%. The difference of position
measurement was less than 2mm. The results of velocity and position compare examination indicated the method
proposed in this paper is feasible.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.