Safe Zone Systems, Inc.

The Macaleese Companies, Inc.

Jerry Hausner

Jonathan Michael West

George G Chadwick

Robert Gorman

Paul J Menicucci

Gregory B MacAleese

Method and apparatus for detecting objects. In one embodiment, a person entering a secured zone is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected back from the person are collected. Concealed weapons are detected by measuring various parameters of the reflected signals and then calculating various selected differences between them. These differences create patterns when plotted as a function of time. Preferably a trained neural network pattern recognition program is then used to evaluate these patterns and autonomously render a decision on the presence of a weapon. An interrupted continuous wave system may be employed. Multiple units may be used to detect various azimuthal angles and to improve accuracy.

Object detection method and apparatus

Method and apparatus for detecting objects. In one embodiment, a person entering a secured zone is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected back from the person are collected. Concealed weapons are detected by measuring various parameters of the reflected signals and then calculating various selected differences between them. These differences create patterns when plotted as a function of time. Preferably a trained neural network pattern recognition program is then used to evaluate these patterns and autonomously render a decision on the presence of a weapon.

Methods and apparatus for detecting objects. In one embodiment, a person entering a secured or 'Safe Zone&#x2122;' is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected back from the person are collected and measured. In a preferred embodiment, concealed weapons are detected by calculating the difference of a pair of differences (Delta A and B) of different polarized reflected energy (upper and lower curves in the two graphs) in the time domain, and by using signal processing methods and apparatus to improve the reliability of the detection process.

Signal processing for object detection system

Methods and apparatus for detecting objects. In one embodiment, a person entering a secured or &ldquo;Safe Zone&trade;&rdquo; is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected back from the person are collected and measured. In a preferred embodiment, concealed weapons are detected by calculating the difference of a pair of differences (Delta A and B) of different polarized reflected energy (upper and lower curves in the two graphs) in the time domain, and by using signal processing methods and apparatus to improve the reliability of the detection process.

A weapons detector ( ) and method utilizing radar. The system comprises a transmitter ( ) for producing an output ( ) of frequencies of a set of self-resonant frequencies of weaponry; an antenna ( ) directing the transmitter output toward locations potentially having weaponry and collecting backscattered signals ( ); a receiver ( ) receiving the backscattered signals ( ) and operating over a range of the self-resonant frequencies; and a signal processor ( ) for detecting the presence of a plurality of the self-resonant frequencies in the backscattered signals ( ). Accuracies of greater than 98% can be obtained at distances, preferably between 4-15 yards. The weapons detector ( ) is capable of detecting metal and non-metal weapons ( ) on a human body ( ) in purses, briefcases and under clothing; and discerning weapons ( ) from objects such as belt buckles, coins, keys, calculators, cellular phones.

Growing community of inventors

Albuquerque, NM, United States of America

Jerry Hausner