Mathew A Cosgrove

US Patent:

20130148763, Jun 13, 2013

Filed:

Dec 12, 2012

Appl. No.:

13/712558

Inventors:

SANJEEV GUNAWARDENA - Athens OH, US
Jeff Dickman - Thousand Oaks CA, US
Mathew A. Cosgrove - Woodland Hills CA, US

International Classification:

H04B 1/10

US Classification:

375340

Abstract:

One embodiment includes an adaptive sample quantization system. The adaptive sample quantization system includes an antenna to receive a radio frequency (RF) signal having data encoded therein, and analog antenna electronics configured to convert the RF signal to an analog electrical signal. The system also includes an analog-to-digital converter (ADC) directly coupled to the antenna and configured to generate a plurality of consecutive digital samples of the RF signal. The system further includes a quantizer to determine a mode based on the plurality of consecutive digital samples and to select at least one threshold based on the determined mode. The quantizer can further compare each digital sample with the at least one threshold to generate a corresponding one of a plurality of output samples having a reduced number of bits relative to the respective digital sample to substantially mitigate potential interference and facilitate extraction of the data.

US Patent:

20130154880, Jun 20, 2013

Filed:

Dec 12, 2012

Appl. No.:

13/712633

Inventors:

JEFF DICKMAN - THOUSAND OAKS CA, US
MATHEW A. COSGROVE - WOODLAND HILLS CA, US

International Classification:

G01S 19/21

US Classification:

34235759

Abstract:

An adaptive cascaded electronic protection processing system for global navigation satellite system (GNSS) threat mitigation is provided. The system includes a precorrelation characterization component configured to provide at least one parameter characterizing a plurality of received signals. A correlator is configured to provide a plurality of correlation results, each representing one of the plurality of received signals. A spatial weight contribution component is configured to determine an optimal set of digital beam-forming weights via an optimization process according to the at least one parameter. A postcorrelation characterization component is configured to determine at least one constraint on the optimization process according to the plurality of correlation results.

US Patent:

20130156073, Jun 20, 2013

Filed:

Dec 13, 2012

Appl. No.:

13/713817

Inventors:

Sanjeev Gunawardena - Athens OH, US
Jeff Dickman - Thousand Oaks CA, US
Mathew A. Cosgrove - Woodland Hills CA, US

International Classification:

H04B 1/709

US Classification:

375150

Abstract:

Systems and methods are provided for a correlator system. The system includes a plurality of numerically controlled oscillators and a multiplier configured to receive an input stream representing a received signal. A carrier multiplexer is configured to select between respective outputs of at least two of the plurality of numerically controlled oscillators and provide the selected output to the multiplier. A code generator is configured to provide a replica code. A delay component is configured to provide a delayed code from the replica code. A code multiplexer is configured to selectively provide each of the delayed code and the replica code to the multiplier.

US Patent:

20130157605, Jun 20, 2013

Filed:

Dec 13, 2012

Appl. No.:

13/713708

Inventors:

JEFF DICKMAN - Thousand Oaks CA, US
Reza Ahmadi - Westlake Village CA, US
Mathew A. Cosgrove - Woodland Hills CA, US
Sanjeev Gunawardena - Athens OH, US

International Classification:

H04B 1/10

US Classification:

455296

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.

US Patent:

20130051285, Feb 28, 2013

Filed:

Aug 23, 2012

Appl. No.:

13/593028

Inventors:

Sanjeev Gunawardena - Athens OH, US
Jeff Dickman - Thousand Oaks CA, US
Mathew A. Cosgrove - Woodland Hills CA, US

International Classification:

H04B 1/709
H04L 5/16

US Classification:

370277, 375150, 375148, 375142, 375E01002

Abstract:

A navigation system includes a correlation engine configured to despread a received signal. The correlation engine includes a correlator configured to evaluate the received signal against a replica signal to produce a correlation result, and a packet encoder configured to produce a packet comprising a destination address, a source address, and the correlation result. An input/output interface is configured to provide the packet to another component in the navigation system.

US Patent:

20170192100, Jul 6, 2017

Filed:

Mar 17, 2017

Appl. No.:

15/462123

Inventors:

JEFF DICKMAN - THOUSAND OAKS CA, US
MATHEW A. COSGROVE - WOODLAND HILLS CA, US

Assignee:

NORTHROP GRUMMAN SYSTEMS CORPORATION - FALLS CHURCH VA

International Classification:

G01S 19/21
G01S 19/36

Abstract:

An adaptive cascaded electronic protection processing system for global navigation satellite system (GNSS) threat mitigation is provided. The system includes a precorrelation characterization component configured to provide at least one parameter characterizing a plurality of received signals. A correlator is configured to provide a plurality of correlation results, each representing one of the plurality of received signals. A spatial weight contribution component is configured to determine an optimal set of digital beam-forming weights via an optimization process according to the at least one parameter. A postcorrelation characterization component is configured to determine at least one constraint on the optimization process according to the plurality of correlation results.