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Title: Passive infrared bullet detection and tracking

An apparatus and method for passively detecting a projectile such as, for example, a bullet using a passive infrared detector. A passive infrared detector is focused onto a region in which a projectile is expected to be located. Successive images of infrared radiation in the region are recorded. Background infrared radiation present in the region is suppressed such that second successive images of infrared radiation generated by the projectile as the projectile passes through the region are produced. A projectile path calculator determines the path and other aspects of the projectile by using the second successive images of infrared radiation generated by the projectile. The present invention, in certain embodiments, also determines the origin of the path of the projectile and takes a photograph of the area surrounding the origin and/or fires at least one projectile at the area surrounding the origin of the path of the projectile. 9 figs.
Inventors:
Issue Date:
OSTI Identifier:
426633
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 450000; 440500; PA: EDB-97:028746; SN: 97001724485
Patent Number(s):
US 5,596,509/A/
Application Number:
PAN: 8-241,907
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 21 Jan 1997
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; INFRARED THERMOGRAPHY; PROJECTILES; DETECTION; INFRARED RADIATION; RADIATION DETECTION; TRAJECTORIES; IMAGES