System and method for identification of communication devices
First Claim
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1. A system for identifying a wireless telephone comprising:
- a signal generator operable to generate a time deterministic, spectrally noncoherent waveform from a transmit horn such that the wireless telephone passively reflects a response waveform, the time deterministic, spectrally noncoherent waveform having a range of frequencies approximately at the operating frequencies of the wireless telephone, and wherein the time deterministic, spectrally noncoherent waveform includes a plurality of electro-magnetic vectors, the sum of which substantially converge toward zero; and
a computing system coupled to a receive horn through a receiver, the computing system being operable to;
scan the time deterministic, spectrally noncoherent waveform through an azimuthal or elevational extent;
receive the response waveform from the wireless telephone; and
compare the response waveform to a plurality of reference waveforms to determine the identity of the wireless telephone and the operating mode of the wireless telephone.
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Abstract
In one embodiment, a system for identifying a communication device includes a signal generator coupled to a transmit horn and a computing system coupled to a receive horn through a receiver. The signal generator is operable to generate an excitation waveform from the transmit horn such that the communication device passively reflects a response waveform. The computing system is operable to receive the response waveform from the communication device and compare the response waveform to a plurality of reference waveforms to determine the identity of the communication device.
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Citations
18 Claims
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1. A system for identifying a wireless telephone comprising:
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a signal generator operable to generate a time deterministic, spectrally noncoherent waveform from a transmit horn such that the wireless telephone passively reflects a response waveform, the time deterministic, spectrally noncoherent waveform having a range of frequencies approximately at the operating frequencies of the wireless telephone, and wherein the time deterministic, spectrally noncoherent waveform includes a plurality of electro-magnetic vectors, the sum of which substantially converge toward zero; and a computing system coupled to a receive horn through a receiver, the computing system being operable to; scan the time deterministic, spectrally noncoherent waveform through an azimuthal or elevational extent; receive the response waveform from the wireless telephone; and compare the response waveform to a plurality of reference waveforms to determine the identity of the wireless telephone and the operating mode of the wireless telephone.
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2. A system for identifying a communication device comprising:
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a signal generator operable to generate an excitation waveform from a transmit horn such that the communication device passively reflects a response waveform; and a computing system coupled to a receive horn through a receiver, the computing system being operable to; receive the response waveform from the communication device; and compare the response waveform to a plurality of reference waveforms to determine the identity of the communication device, wherein the signal generator is further operable to generate a time deterministic, spectrally noncoherent waveform, wherein the time deterministic, spectrally noncoherent waveform includes a plurality of electro-magnetic vectors, the sum of which substantially converge toward zero. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computer implemented method for identifying a communication device comprising:
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transmitting an excitation waveform such that the communication device passively reflects a response waveform; receiving the response waveform from the communication device; and comparing the response waveform to a plurality of reference waveforms to determine the identity of the communication device, wherein transmitting an excitation waveform further comprises transmitting a time deterministic, spectrally noncoherent waveform, wherein the time deterministic, spectrally noncoherent waveform includes a plurality of electro-magnetic vectors, the sum of which substantially converge toward zero. - View Dependent Claims (15, 16, 17, 18)
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Specification