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Global navigation satellite system spoofer identification technique based on carrier to noise ratio signatures

22 Aug 23

Disclosed is a technique that can provide one or more countermeasures against spoofers.

Ivan L. Johnston, Gilberto Isaac Sada, Steven B. Alexander

Filed: 1 Dec 21

Utility

Global navigation satellite system spoofer identification technique

4 Jul 23

Disclosed is a technique that can provide one or more countermeasures against spoofers.

Steven B. Alexander, Gilberto Isaac Sada

Filed: 2 Mar 21

Utility

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9 Aug 22

Disclosed is a technique to estimate at least a portion of an attitude, such as an azimuth angle from true North, based on beam angles from a controlled reception pattern antenna (CRPA) to space vehicle locations.

Steven B. Alexander

Filed: 18 Aug 20

Utility

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29 Mar 22

Apparatus and methods determine the rotational position of a spinning object.

Steven B. Alexander, Richard Redhead

Filed: 2 Apr 20

Utility

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7 Dec 21

Disclosed is a technique that can provide one or more countermeasures against spoofers.

Ivan L. Johnston, Gilberto Isaac Sada, Steven B. Alexander

Filed: 24 Jan 20

Utility

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23 Nov 21

Apparatus and methods provide anti-spoofing capability from a first global navigation satellite system (GNSS) receiver to a second GNSS receiver.

Derek Michael Loomer Boyer, Steven B. Alexander, Richard F. Redhead

Filed: 16 Jun 20

Utility

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24 Aug 21

A radio receiver has a front end having a shared amplification path for both radio frequency signals and intermediate frequency signals.

David Duane Chapman

Filed: 8 Apr 20

Utility

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16 Mar 21

Disclosed is a technique that can provide one or more countermeasures against spoofers.

Steven B. Alexander, Gilberto Isaac Sada

Filed: 9 Jul 18

Utility

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16 Feb 21

Apparatus and methods determine the rotational position of a spinning object.

Steven B. Alexander, Richard F. Redhead

Filed: 15 Jun 20

Utility

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14 Dec 20

Apparatus and methods permit the use of a microelectromechanical systems (MEMS) oscillator in a satellite positioning system receiver, such as a Global Positioning System (GPS) receiver.

David Duane Chapman, Steven B. Alexander

Filed: 17 Jul 18

Utility

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7 Sep 20

Disclosed is a technique to estimate at least a portion of an attitude, such as an azimuth angle from true North, based on beam angles from a controlled reception pattern antenna (CRPA) to space vehicle locations.

Steven B. Alexander

Filed: 8 Jul 18

Utility

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27 Jul 20

Apparatus and methods provide anti-spoofing capability from a first global navigation satellite system (GNSS) receiver to a second GNSS receiver.

Derek Michael Loomer Boyer, Steven B. Alexander, Richard F. Redhead

Filed: 3 Jan 18

Utility

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29 Jun 20

Apparatus and methods determine the rotational position of a spinning object.

Steven B. Alexander, Richard F. Redhead

Filed: 16 May 18

Utility

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27 Apr 20

A radio receiver has a front end having a shared amplification path for both radio frequency signals and intermediate frequency signals.

David Duane Chapman

Filed: 28 Jan 19

Utility

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13 Apr 20

Apparatus and methods determine the rotational position of a spinning object.

Steven B. Alexander, Richard Redhead

Filed: 27 Aug 17

Utility

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27 Jan 20

Disclosed is a technique that can provide one or more countermeasures against spoofers.

Ivan L. Johnston, Gilberto Isaac Sada, Steven B. Alexander

Filed: 7 Jul 16