Nokomis, Inc.

US Government As Represented by the Secretary of the Army

Stephen Dorn Freeman

Walter J Keller, Iii

Walter John Keller

Kenneth Irving Ranney

Kyle Alexander Gallagher

Jason Galyardt

Gregory James Mazzaro

Kwok Foo Tom

John C Merritt, Iv

Edward A Viveiros, Jr

Walter J Iii Keller

A system for inspecting or screening electrically powered device includes a signal generator inputting a preselected signal into the electrically powered device. There is also an antenna array positioned at a pre-determined distance above the electrically powered device. Apparatus collects RF energy emitted by the electrically powered device in response to input of said preselected signal. The signature of the collected RF energy is compared with an RF energy signature of a genuine part. The comparison determines one of a genuine or counterfeit condition of the electrically powered device.

System and method for physically detecting counterfeit electronics

A method and apparatus for receiving signals from an unknown transmitting source and providing the location of the unknown transmitting source comprising a series of channels for receiving signals radiated by the unknown transmitting sources, generating preprocessed time domain data and generating a SAR image depicting a location of the unknown transmitting source, and a processor for processing the preprocessed time domain data to enhance a pixel value at each pixel location within the SAR image by summing signal data from each channel related to each pixel location to generate an enhanced SAR image.

Method and apparatus for providing a passive transmitter based synthetic aperture radar

Apparatus for augmenting a received signal comprising a receiver configured to receive a signal, a digitizer configured to generate a digitized version of the received signal at two different times, and a signal processor, coupled to the digitizer, configured to determine a phase relationship between the digitized signals at the two different times, adjust a phase of at least one of the digitized signals based on the phase relationship to combine the two digitized signals to form an augmented signal.

Method and apparatus for performing signal augmentation

A radar assembly for receiving signals at spaced frequencies from an unknown transmitting source comprising a receiver operative to receive signals; the receiver comprising a series of channels, each channel comprising a low pass filter configured to allow passage of a signal from an unknown transmitting source, an analog to digital converter configured to transform the signal from the unknown transmitting source to a digital signal, a Hilbert transform configured to transform the digital signal from the unknown transmitting source into a single sideband signal, a Fourier transform configured to transform the single sideband signal into a plurality of regularly spaced frequency samples, and an inverse Fourier transform for extracting regularly spaced frequency samples; whereby extracted pulses form a train of pulses that are inputted into an imager which utilizes synthetic aperture radar to form an image of the area of interest containing the unknown transmitting device and method thereof.

Passive non-linear synthetic aperture radar and method thereof

A system for inspecting or screening electrically powered device includes a signal generator inputting a preselected signal into the electrically powered device. There is also an antenna array positioned at a pre-determined distance above the electrically powered device. Apparatus collects RF energy emitted by the electrically powered device in response to input of said preselected signal. The signature of the collected RF energy is compared with an RF energy signature of a genuine part. The comparison determines one of a genuine or a counterfeit condition of the electrically powered device.

The present invention is a signal processing method to significantly improve the detection and identification of source emissions. More particularly, the present invention offers a processing method to reduce the false alarm rate of systems which remotely detect and identify the presence of electronic devices through an analysis of a received spectrum the devices' unintended emissions. The invention identifies candidate emission elements and determines their validity based on a frequency and phase association with other emissions present in the received spectrum. The invention compares the measured phase and frequency data of the emissions with a software solution of the theoretically or empirically derived closed-form expression which governs the phase and frequency distribution of the emissions within the source. Verification of this relationship serves to dramatically increase the confidence of the detection.

Identification and analysis of source emissions through harmonic phase comparison

A method for assessing results from application of energy onto one or more electric or electronic devices includes the steps of acquiring an electromagnetic emission from the one or more devices, directing energy onto the one or more devices, acquiring another electromagnetic emission from the one or more devices having the energy directed thereonto and determining, in accordance with at least one logic algorithm state and/or change in state of the one or more devices. There is also a microprocessor based apparatus that is employed for acquiring the electromagnetic emissions and executing the at least one logic algorithm. Energy is directed by either a weapon or electromagnetic phenomena.

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Charleroi, PA, United States of America

Stephen Dorn Freeman