Electromagnetic emissions stimulation and detection system
First Claim
1. A computerized system for detecting a target electronic device emitting an unintentional electromagnetic emission (UEE) signal within an area, said system comprising:
- a classification component for;
receiving the UEE signal emitted from each of one or more test electronic devices while located in each of a noise controlled environment and a non-noise controlled environment;
identifying a unique characteristic of the UEE signal emitted from each of one or more test electronic devices; and
storing the identified unique characteristic of the UEE signal from each test device as unique characteristic data in a memory; and
a stimulation component for transmitting an ideal stimulation signal within the area in response to input received from an input device, wherein the target electronic device is responsive to the stimulation signal to emit a stimulated UEE signal; and
a detection component for;
receiving the stimulated UEE signal;
converting the received stimulated UEE signal to a digital signal;
processing the digital signal to determine a characteristic of the stimulated UEE signal and comparing the determined characteristics to characteristic data stored in the memory; and
generating an alert signal when the determined characteristics of the stimulated UEE signal matches characteristic data stored in the memory.
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Accused Products
Abstract
A system and method for detecting and identifying electronic devices based on their unintended electromagnetic emissions (“UEE”) signals is presented. During device classification, UEE signals are measured from a plurality of test devices and characteristic data is obtained from the UEE signal emitted from each test device. Using the characteristic data, a threshold value and ideal pulse template can be determined for each test device and stored in a memory. An ideal stimulation signal is also determined for each test device and stored in the memory. During device detection, the ideal stimulation signal is applied to the environment in which a target device is suspected of being located. Stimulated UEE signals are measured from the target device and processed. The processed measurement data is compared to stored power threshold values and ideal pulse templates to determine if the target device is present.
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Citations
23 Claims
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1. A computerized system for detecting a target electronic device emitting an unintentional electromagnetic emission (UEE) signal within an area, said system comprising:
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a classification component for; receiving the UEE signal emitted from each of one or more test electronic devices while located in each of a noise controlled environment and a non-noise controlled environment; identifying a unique characteristic of the UEE signal emitted from each of one or more test electronic devices; and storing the identified unique characteristic of the UEE signal from each test device as unique characteristic data in a memory; and a stimulation component for transmitting an ideal stimulation signal within the area in response to input received from an input device, wherein the target electronic device is responsive to the stimulation signal to emit a stimulated UEE signal; and a detection component for; receiving the stimulated UEE signal; converting the received stimulated UEE signal to a digital signal; processing the digital signal to determine a characteristic of the stimulated UEE signal and comparing the determined characteristics to characteristic data stored in the memory; and generating an alert signal when the determined characteristics of the stimulated UEE signal matches characteristic data stored in the memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for detecting a target electronic device emitting an unintentional electromagnetic emission (UEE) signal within an area, said method comprising:
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receiving the UEE signal emitted from each of one or more test electronic devices while located in each of a noise controlled environment and a non-noise controlled environment; identifying a unique characteristic of the UEE signal emitted from each of one or more test electronic devices; storing the identified unique characteristic of the UEE signal from each test device as unique characteristic data in a memory; transmitting an ideal stimulation signal within the area in response to input received from an input device, wherein the target electronic device is responsive to the stimulation signal to emit a stimulated UEE signal; receiving the stimulated UEE signal; converting the received stimulated UEE signal to a digital signal; processing the digital signal to determine a characteristic of the stimulated UEE signal and comparing the determined characteristics to characteristic data stored in the memory; and generating an alert signal when the determined characteristics of the stimulated UEE signal matches characteristic data stored in the memory. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A computerized system for detecting a target electronic device emitting an unintentional electromagnetic emission (UEE) signal within an area, said system comprising:
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a classification component for; receiving the UEE signal emitted from each of one or more test electronic devices while located in each of a noise controlled environment and a non-noise controlled environment; identifying a unique characteristic of the UEE signal emitted from each of one or more test electronic devices; storing the identified unique characteristic of the UEE signal from each test device as unique characteristic data in a memory; and determining a threshold value for each test device based on corresponding measured time domain and frequency domain characteristic data acquired in the non-noise controlled environment; a template component for defining an ideal pulse template for each test device based on corresponding measured time domain characteristic data stored in the memory; a detection component for; receiving the UEE signal; converting the received UEE signal to a digital signal; processing the digital signal to determine a characteristic of the UEE signal and comparing the determined characteristics to characteristic data stored in the memory;
wherein the processing includes;retrieving an ideal pulse template that correspond to a first test device identified in the memory; first correlating the digital signal with the retrieved ideal pulse template; second correlating the first correlation with a square wave to determine a normalized measure of similarity; and comparing the normalized measure of similarity to a first threshold value stored in the memory that corresponds to the first test device; and generating an alert signal when the normalized measure of similarity is greater than or equal to the first threshold value; and a sound generator operatively coupled to the detection component, wherein the sound generator processes the alert signal and generates a unique sound indicative of a particular electronic device.
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Specification