초록 ▼

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. Bac

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.

대표청구항 ▼

A method for passively detecting and determining the path of a projectile comprising the steps of: observing and recording a plurality of first successive images of infrared radiation present in a region in which a projectile is expected to be located using at least one passive infrared detector, su

A method for passively detecting and determining the path of a projectile comprising the steps of: observing and recording a plurality of first successive images of infrared radiation present in a region in which a projectile is expected to be located using at least one passive infrared detector, suppressing in each of said plurality of first successive images of said region background infrared radiation present in said region such that second successive images containing substantially only infrared radiation generated by said projectile as said projectile passes through said region are produced, and calculating the path of said projectile by using said second successive images of infrared radiation generated by said projectile.