Benjamin D Werner

US Patent:

8305265, Nov 6, 2012

Filed:

Jun 12, 2009

Appl. No.:

12/457512

Inventors:

Kenan O. Ezal - Santa Barbara CA, US
Benjamin D. Werner - Goleta CA, US

Assignee:

Toyon Research Corporation - Goleta CA

International Classification:

G01S 19/53
G01S 5/02
G01S 5/04

US Classification:

34235736, 342417, 342427, 342432, 342447

Abstract:

An exemplary radio-based navigation system uses a small multimode direction-finding antenna and a direction-finding receiver capable of determining platform position, velocity, attitude, and time while simultaneously providing protection against narrowband and broadband sources of interference. Global Navigation Satellite System (GNSS) signals such as those from the Global Positioning System (GPS) provide attitude measurements with a compact multimode direction-finding antenna (e. g. , a small two-arm spiral with improved angle-of-arrival performance over the entire hemisphere enhanced through the use of a conductive vertical extension of the antenna ground plane about the antenna perimeter and/or conductive posts placed evenly around the antenna perimeter) which provides simultaneous protection against jammers. The multimode spiral may be treated as an array of rotationally-symmetric antenna elements. The GPS receiver architecture also may be modified for direction-finding and thereby attitude determination by increasing the requisite number of input signals from one to at least two while minimizing the required number of correlators and mixers.

US Patent:

20070293150, Dec 20, 2007

Filed:

Jun 17, 2005

Appl. No.:

11/154952

Inventors:

Kenan Ezal - Santa Barbara CA, US
Thomas Larry - Purcellville VA, US
Andrew Richen - Santa Barbara CA, US
Michael Wiatt - Ventura CA, US
Craig Agate - Moorpark CA, US
Benjamin Werner - Santa Barbara CA, US
Michael Vanblaricum - Santa Barbara CA, US

Assignee:

TOYON RESEARCH CORPORATION - Goleta CA

International Classification:

H04B 7/185
H04B 7/14

US Classification:

455025000, 455013300, 455562100

Abstract:

A compact, non-phased-array, electronically reconfigurable antenna (ERA) system with at least two operational modes has a first operational objective that is polarization-sensitive null steering (PSNS) and a second operational objective that is direction-finding (DF). The system can rapidly switch between two operational states. In the first state, the system behaves like a polarization filter (PF) and operates as a controlled reception pattern antenna (CRPA), while in the second state the system behaves as an angle-of-arrival (AOA) sensor and operates as a fixed reception pattern antenna (FRPA). The system may include a spiral-mode antenna with both feed and load ports; a mode-forming network; an electronics package; and feedback control electronics. Radio frequency (RF) interference rejection and RF direction-finding may be performed as well as reduction and/or elimination of multiple jamming signals that are intentionally or unintentionally directed at a Global Positioning System (GPS). The determination of direction and location of the source of jamming signals may also be achieved.

US Patent:

20080303714, Dec 11, 2008

Filed:

May 29, 2008

Appl. No.:

12/155102

Inventors:

Kenan O. Ezal - Santa-Barbara CA, US
Tariq A. Mujahed - Santa Barbara CA, US
Benjamin D. Werner - Goleta CA, US

International Classification:

G01S 5/02
G01S 5/04

US Classification:

34235712, 342417, 342447

Abstract:

An exemplary radio-based navigation system uses a single-aperture multimode direction-finding antenna capable of determining platform position, velocity, attitude, and time while simultaneously providing protection against narrowband and broadband sources of interference. Global Navigation Satellite System (GNSS)-signals such as those from the Global Positioning System (GPS) provide protection against jammers while simultaneously providing attitude measurements with a compact single-aperture multimode antenna (e.g., a small two-arm spiral with improved angle-of-arrival performance over the entire hemisphere enhanced through the use of a conductive vertical extension of the antenna ground plane about the antenna perimeter and/or conductive posts placed evenly around the antenna perimeter). The multimode spiral may be treated as an array of cylindrically symmetric antenna elements. GPS receiver correlation architecture also may be modified for attitude determination by increasing the requisite number of input signals from one to at least two while minimizing the required number of correlators and mixers.

US Patent:

20120306691, Dec 6, 2012

Filed:

Nov 2, 2011

Appl. No.:

13/287873

Inventors:

Benjamin A. Werner - Santa Clara CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G01S 19/46
G01S 5/02

US Classification:

34235729, 342451, 342450

Abstract:

Methods and apparatuses for a mobile station to obtain a position fix using synchronous hybrid positioning and asynchronous hybrid positioning techniques are described. In one embodiment, a wireless communication apparatus may transmit a request to a mobile station for timing reference information. The apparatus may be configured to receive the timing reference information, first timing measurements from a first positioning technology, and second timing measurements from a second positioning technology. The apparatus may identify whether the mobile station is capable of supporting synchronous hybrid positioning based on the timing reference information. If it is synchronous hybrid capable, then the apparatus may then establish a position fix for the mobile station using a synchronous hybrid positioning technique that involves relating the first and second timing measurements to a common time scale based on the timing reference information. If it is not synchronous hybrid capable, then the apparatus may establish a position fix for the mobile station using an asynchronous hybrid positioning technique wherein the time scales of the first and second timing measurements are not interrelated.

US Patent:

20120306692, Dec 6, 2012

Filed:

Nov 2, 2011

Appl. No.:

13/287882

Inventors:

Benjamin A. Werner - Santa Clara CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G01S 19/46

US Classification:

34235729

Abstract:

Methods and apparatuses for a mobile station to obtain a position fix using synchronous hybrid positioning and asynchronous hybrid positioning techniques are described. In one embodiment, a wireless communication apparatus may transmit a request to a mobile station for fine time assistance (FTA) corresponding to a global navigation satellite system (GNSS). The apparatus may be configured to receive the FTA, first timing measurements from one or more base stations, and second timing measurements from the GNSS. The apparatus may identify whether the FTA was received from the mobile station. If it is determined that the FTA was received, then the apparatus may establish a position fix for the mobile station using a synchronous hybrid positioning technique relating the timing measurements to a time scale associated with a system frame number (SFN). If not, then the apparatus may establish the position fix using an asynchronous hybrid positioning technique.

US Patent:

20130065604, Mar 14, 2013

Filed:

Sep 13, 2011

Appl. No.:

13/231902

Inventors:

Benjamin A. Werner - Santa Clara CA, US
Sundar Raman - Santa Clara CA, US
Lionel Jacques Garin - Palo Alto CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 24/00

US Classification:

4554561

Abstract:

Techniques are disclosed for managing operation of multiple estimators in a wireless device. In at least one implementation, techniques for providing relatively seamless transition between dissimilar regions of a state space may be provided.

US Patent:

20130321210, Dec 5, 2013

Filed:

Jun 1, 2012

Appl. No.:

13/487029

Inventors:

Benjamin A. Werner - San Carlos CA, US
Weihua Gao - San Jose CA, US

Assignee:

QUALCOMM INCORPORATED - San Diego CA

International Classification:

G01S 5/02

US Classification:

342451

Abstract:

An apparatus and method for building a base station almanac at a non-carrier location server is shown. A mobile device cooperates by informing the non-carrier location server of observed time difference of arrival (OTDOA) assistance data it receives. The non-carrier location server collects enough OTDOA assistance data through crowd souring or spoofing to generate an OTDOA library. The non-carrier location server using the OTDOA library to generate a base station almanac. Once created, non-carrier location server uses the base station almanac to provide assistance data to mobile devices without assistance from the carrier. Also, a mobile device may use the base station almanac to determine transmission timing between itself and neighboring and distant base stations.

US Patent:

20130324163, Dec 5, 2013

Filed:

Jun 1, 2012

Appl. No.:

13/487006

Inventors:

Benjamin A. Werner - San Carlos CA, US
Weihua Gao - San Jose CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 24/00
H04W 88/02

US Classification:

4554566, 4555501

Abstract:

An apparatus and method for calculating time offsets for imperceptible base stations, which include base stations that have limited or no communication with a mobile station are presented. Time offsets for the imperceptible base stations are computed using transmit time offset information for a plurality of base station pairs received from a non-carrier base station almanac. A time offset between the mobile device at a first location and a serving base station at a second location is also computed. The time offsets for the imperceptible base stations may then be computed using the received transmit time offsets of the plurality of base station pairs and the time offset between the mobile device and the serving base station. The non-carrier base station almanac is built using a mobile device that informs a non-carrier location server of observed time difference of arrival (OTDOA) assistance data it receives from a carrier's location server.