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System and method to detect anomalies

  • US 10,024,963 B2
  • Filed: 03/25/2013
  • Issued: 07/17/2018
  • Est. Priority Date: 03/23/2012
  • Status: Active Grant
First Claim
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1. A system for detecting anomalies concealed upon a person, the system comprising:

  • a detection probe having an electromagnetic transmitter and an electromagnetic receiver, the electromagnetic transmitter is configured to emit electromagnetic pulses, the electromagnetic receiver is configured to sample electromagnetic pulses from the electromagnetic receiver at specified times within a waveform window;

    an objective optic incorporated in the detection probe, the objective optic configured to direct the pulsed electromagnetic radiation emitted by the transmitter to a concealment stack and;

    the objective optic being configured to receive and direct to the receiver reflections of the concealment stack at a defined distance, wherein the detection probe may be focused at a depth of concealed skin of the person without the exterior of the detection probe contacting a top of the concealment stack;

    the transmitter and receiver configured in a monostatic reflection geometry with respect to an objective optic; and

    a time domain data acquisition system in communication with the receiver, the time domain data acquisition system configured to capture reflections from a range thickness of the concealment stack and generate a returned waveform, the waveform window having the reflection time corresponding to the focus of the objective opticwherein the time domain data acquisition system is configured to determine by analyzing the returned waveform that the one or more intereferent components of the concealment stack is smaller in either volume, density, or mass than a quantitative threshold to be considered an anomaly;

    wherein the quantitative threshold is based on thickness, lateral extent, volume, density, or mass to be considered an anomaly;

    an indicator indicating when an operator of the detection probe is at an appropriate distance from the concealment stack to obtain a valid measurement, wherein the appropriate distance is 100 mm or less.

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