RADAR DETECTION AND LOCATION OF RADIO FREQUENCY (RF) DEVICES
First Claim
1. A system for detection and location of a radio frequency (RF) device, comprising:
- a first channel comprising a first antenna and a first processor, the first channel capable of transmitting a first radar signal and receiving RF signals; and
a second channel comprising a second antenna and a second processor, the second channel capable of transmitting a second radar signal and receiving RF signals, the second radar signal being offset in frequency from the first radar signal, wherein the first processor and the second processor are each is configured to analyze at least one of harmonic signals and intermodal (IM) signals generated by the RF device in response to the first radar signal and the second radar signal to provide detection of the RF device and an estimated location of the RF device.
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Accused Products
Abstract
A system and method for detecting the presence of an RF device and determining a location of the RF device. The system includes a first antenna capable of transmitting a first radar signal and receiving RF signals, a second antenna capable of transmitting a second radar signal and receiving RF signals, where the second radar signal is offset in frequency from the first radar signal, and one or more processors. The one or more processors analyzes harmonic and intermodulation (IM) signals generated in response to the first radar signal and the second radar signal interacting with nonlinear characteristics in components of a RF device. The analyzing provides detection of the presence of the RF device and the determination of a location of the RF device regardless of whether the RF device is active or passive.
13 Citations
25 Claims
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1. A system for detection and location of a radio frequency (RF) device, comprising:
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a first channel comprising a first antenna and a first processor, the first channel capable of transmitting a first radar signal and receiving RF signals; and a second channel comprising a second antenna and a second processor, the second channel capable of transmitting a second radar signal and receiving RF signals, the second radar signal being offset in frequency from the first radar signal, wherein the first processor and the second processor are each is configured to analyze at least one of harmonic signals and intermodal (IM) signals generated by the RF device in response to the first radar signal and the second radar signal to provide detection of the RF device and an estimated location of the RF device. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11)
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5. (canceled)
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12. A method for detecting the presence of a radio frequency (RF) device, comprising:
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transmitting a radar signal by a radar system; detecting harmonic signals generated by an RF device in response to an interaction of the radar signal with nonlinear characteristics of the RF device, the harmonic signals being detected by a first channel and a second channel of the radar system; detecting intermodulation (IM) signals generated by the RF device by the first channel and the second channel of the radar system, in response to the radar signal; processing the detected harmonic signals in at least one of a first processor of the first channel and a second processor of the second channel of the radar system; processing the detected IM signals in at least one of the first processor of the first channel and the second processor of the second channel of the radar system, wherein the IM signals and the harmonic signals are processed to provide an analysis result; and determining the presence of the RF device based on the analysis result. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method for determining a location of a radio frequency (RF) device comprising:
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transmitting a first radar signal by a first channel of a radar system and a second radar signal by a second channel of the radar system, the second radar signal being offset in frequency from the first radar signal; detecting harmonic signals generated in response to an interaction of the first radar signal and the second radar signal with the RF device, the harmonic signals being detected by at least one of the first channel of the radar system and the second channel of the radar system; detecting intermodulation (IM) signals generated in response to the interaction of the first radar signal and the second radar signal with nonlinear characteristics of the RF device, the IM signals being detected by at least one of the first channel and the second channel of the radar system; analyzing the detected harmonic signals by at least one of a first processor of the first channel and a second processor of the second channel of the radar system; analyzing the detected IM signals by at least one of the first processor of the first channel and the second processor of the second channel of the radar system; and determining a location of the presence of the RF device based on the analyzing of at least the IM signals. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification