Concealed weapons detection system
First Claim
1. An object detector comprising:
- an electrical circuit for producing electromagnetic radiation;
at least one antenna to transmit the produced radiation toward an object of interest and to collect radiation that is reflected from the object;
an electrical circuit to process the collected reflected radiation and convert the collected radiation to at least one waveform;
a system to automatically compare waveform phase and amplitude information from the at least one waveform to pre-determined information; and
an automatic affirmative signal if an approximate match is made between the information from the at least one waveform and the pre-determined information;
wherein no image of the object of interest is displayed.
7 Assignments
0 Petitions
Accused Products
Abstract
A weapons detector (12) and method utilizing radar. The system comprises a transmitter (27) for producing an output (14) of frequencies of a set of self-resonant frequencies of weaponry; an antenna (28) directing the transmitter output toward locations potentially having weaponry and collecting backscattered signals (15); a receiver (29) receiving the backscattered signals (15) and operating over a range of the self-resonant frequencies; and a signal processor (30) for detecting the presence of a plurality of the self-resonant frequencies in the backscattered signals (15). Accuracies of greater than 98% can be obtained at distances, preferably between 4-15 yards. The weapons detector (12) is capable of detecting metal and non-metal weapons (16) on a human body (13) in purses, briefcases and under clothing; and discerning weapons (16) from objects such as belt buckles, coins, keys, calculators, cellular phones.
289 Citations
50 Claims
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1. An object detector comprising:
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an electrical circuit for producing electromagnetic radiation;
at least one antenna to transmit the produced radiation toward an object of interest and to collect radiation that is reflected from the object;
an electrical circuit to process the collected reflected radiation and convert the collected radiation to at least one waveform;
a system to automatically compare waveform phase and amplitude information from the at least one waveform to pre-determined information; and
an automatic affirmative signal if an approximate match is made between the information from the at least one waveform and the pre-determined information;
wherein no image of the object of interest is displayed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 45, 46)
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25. A method of detecting an object of interest, the method comprising the steps of:
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a) transmitting electromagnetic radiation toward an object of interest;
b) collecting electromagnetic radiation that is reflected from the object of interest;
c) converting the collected electromagnetic radiation into at least one waveform;
d) automatically comparing waveform phase and amplitude information from the at least one waveform to pre-determined information; and
e) automatically generating an affirmative signal if an approximate match is made between the information from the at least one waveform and the pre-determined information;
wherein no image of the object of interest is displayed. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 47, 48, 49, 50)
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Specification