System and method for detection of RF signal spoofing
First Claim
Patent Images
1. A radio frequency (RF) receiver system comprising:
- an antenna configured to receive an RF input signal;
an RF signal front-end system configured to process the RF input signal to generate an equivalent digital signal; and
a spoof detection system comprising;
a memory configured to store a predetermined baseline power spectral density (PSD) corresponding to a baseline RF signal in which the spoofing signal component is known to be absent;
a PSD processor configured to generate a time-averaged PSD of the equivalent digital signal; and
a PSD comparator configured to implement a statistical difference algorithm across the time-averaged PSD of the equivalent digital signal relative to the predetermined baseline PSD to detect a spoofing signal component in the RF input signal.
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Abstract
One embodiment of the invention includes a radio frequency (RF) receiver system. The system includes an antenna configured to receive an RF input signal and an RF signal front-end system configured to process the RF input signal to generate an equivalent digital signal. The system also includes a spoof detection system configured to analyze a power spectral density (PSD) of the equivalent digital signal and to compare the PSD of the equivalent digital signal with a predetermined baseline PSD to detect the presence of a spoofing signal component in the RF input signal.
19 Citations
13 Claims
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1. A radio frequency (RF) receiver system comprising:
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an antenna configured to receive an RF input signal; an RF signal front-end system configured to process the RF input signal to generate an equivalent digital signal; and a spoof detection system comprising; a memory configured to store a predetermined baseline power spectral density (PSD) corresponding to a baseline RF signal in which the spoofing signal component is known to be absent; a PSD processor configured to generate a time-averaged PSD of the equivalent digital signal; and a PSD comparator configured to implement a statistical difference algorithm across the time-averaged PSD of the equivalent digital signal relative to the predetermined baseline PSD to detect a spoofing signal component in the RF input signal. - View Dependent Claims (2, 3, 4, 5)
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6. A radio frequency (RF) receiver system comprising:
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an antenna configured to receive an RF input signal; an RF signal front-end system configured to process the RF input signal to generate an equivalent digital signal; and a spoof detection system comprising; a memory configured to store a predetermined baseline power spectral density (PSD) corresponding to a baseline RF signal in which the spoofing signal component is known to be absent; a PSD processor configured to generate a time-averaged PSD of the equivalent digital signal; and a PSD comparator configured to substantially filter a data component associated with the time-averaged PSD of the equivalent digital signal and with the predetermined baseline PSD and to compare the time-averaged PSD of the equivalent digital signal with the predetermined baseline PSD to detect the presence of a spoofing signal component in the RF input signal. - View Dependent Claims (7, 8, 9)
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10. A radio frequency (RF) receiver system comprising:
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an antenna configured to receive an RF input signal; an RF signal front-end system configured to process the RF input signal to generate an equivalent digital signal; and a spoof detection system comprising; a memory configured to store a predetermined baseline power spectral density (PSD) corresponding to a baseline RF signal in which the spoofing signal component is known to be absent; a PSD processor configured to generate a time-averaged PSD of the equivalent digital signal; a normalization component configured to normalize the time-averaged PSD of the equivalent digital signal and the baseline PSD; and a PSD comparator configured to compare the normalized time-averaged PSD of the equivalent digital signal with the normalized predetermined baseline PSD to detect the presence of a spoofing signal component in the RF input signal. - View Dependent Claims (11, 12, 13)
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Specification