Abstract: A method and system (FIG. 2) for facilitating detection of intruders into a wireless network, through the use of physical layer anomalies. One or more monitoring stations (22, 24, 26) can be distributed across the potential intruder's signal transmission region. They process these transmissions and extract attributes of the signals, which can then transmit to one or more fusion stations (28), which correlate the calculated attributes with stored attributes of signals of known, authorized users of the network, and transmit alert messages in the case that these signal attributes do not match those of known, authorized users. Signal attributes in accordance with the instant invention include the carrier frequency, spurious emissions, and power-on and power-down transients.

Abstract: A system and method to modularize a signal observation process to allow continual adaptation as the independent modules evolve. Receivers, digitizers, storage, and synchronization means form discrete subsystems that can be integrated together yet still be independently upgraded or modified. The integrated system is controlled by software that allows continuous deterministic signal observation for arbitrarily long periods of time. The software enables a schedule-based temporal collection of signals through a method that controls the tuning of the receivers and the downloading of data to storage media. The control software also allows automatic distributed operation of multiple sites in synchronization to within parts per million or better.

Abstract: A system and method to modularize a signal observation process to allow continual adaptation as the independent modules evolve. Receivers, digitizers, storage, and synchronization means form discrete subsystems that can be integrated together yet still be independently upgraded or modified. The integrated system is controlled by software that allows continuous deterministic signal observation for arbitrarily long periods of time. The software enables a schedule-based temporal collection of signals through a method that controls the tuning of the receivers and the downloading of data to storage media. The control software also allows automatic distributed operation of multiple sites in synchronization to within parts per million or better.

Abstract: A method and system (FIG. 2) for facilitating detection of intruders into a wireless network, through the use of physical layer anomalies. One or more monitoring stations (22, 24, 26) can be distributed across the potential intruder's sign transmission region. They process these transmissions and extract attributes of the signals, which can then transmit to one or more fusion stations (28), which correlate the calculated attributes with stored attributes of signals of known, authorized users of the network, and transmit alert messages in the case that these signal attributes do not match those of known, authorized users. Signal attributes in accordance with the instant invention include the carrier frequency, spurious emissions, and power-on and power-down transients.