System and Method for Radio Frequency Intrusion Detection
AssigneeAT&T Mobility II LLC
InventorsBruce Christofferson, Michael Demblewski
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Abstract
A system to detect and analyze RF signals utilizes a data structure storing RF signatures indicating characteristics of known authorized and/or unauthorized RF transmissions. When an RF signal is detected, certain analysis characteristics are extracted from the RF signal and analyzed with respect to the stored RF signatures to determine whether the RF transmission is authorized or unauthorized. In the event of an unauthorized RF transmission, the system generates an alarm condition to alert the user to an RF intrusion and may further log data related to the intruder transmission. Known techniques may be used to determine the location of the RF intrusion within a defined area of operations.
Claims14
A radio frequency (RF) intrusion detection system comprising:
- RF receivers configured to detect an RF signal in a RF bands in a defined geographical area, each RF receiver including an RF antenna;
- a data structure configured to store RF signatures within the defined geographical area;
- and
- a processor configured to
- generate an alarm signal indicative of unauthorized RF transmission upon determining that the detected RF signal has no match among stored authorized RF signatures;
- wherein each authorized RF signature from the stored authorized RF signatures includes signal characteristics analyzed during a learn mode, the learn mode being a period of time during which RF signals are detected by at least one of the RF receivers.
A method for radio frequency (RF) intrusion detection using RF receivers positioned within a predetermined area to detect RF signals in RF bands, each RF receiver having an associated RF antenna, the method comprising:
- generating an alarm signal indicative of an unauthorized RF transmission upon determining that a detected RF signal has no match among authorized RF signatures stored in a data structure;
- wherein each authorized RF signature from the stored authorized RF signatures includes a signal characteristics analyzed during a learn mode, the learn mode being a period of time during which RF signals are detected by at least one of the RF receivers.
Dependencies are inferred from the claim text.