Patents by Inventor Peter F. MacDoran
Peter F. MacDoran has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10371806Abstract: Doppler Aided Inertial Navigation (DAIN) facilitates the determination of position, velocity and direction of mobile devices operating in highly obstructed GPS/GNSS environments. Delivering high precision, high resolution positioning information using signals of opportunity, the present invention measures the Doppler shift of a moving device using a variety of signals combined with inertial accelerometers and environmental sensors to deliver an autonomous positioning and navigation capability that does not require external infrastructure or a priori knowledge of signal sources.Type: GrantFiled: December 11, 2015Date of Patent: August 6, 2019Assignee: Telecommunications Systems, Inc.Inventors: Michael B. Mathews, Peter F. MacDoran
-
Patent number: 9857476Abstract: The present invention relates to a system and method using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Combining spectral compression with spread spectrum cross correlation provides unique advantages for positioning and navigation applications including carrier phase observable ambiguity resolution and direct, long-code spread spectrum signal acquisition. Alternatively, the present invention also provides unique advantages for establishing the validity of navigation signals in order to counter the possibilities of electronic attack using spoofing and/or denial methods.Type: GrantFiled: May 2, 2017Date of Patent: January 2, 2018Assignee: Telecommuncation Systems, Inc.Inventors: Michael B. Mathews, Peter F. MacDoran
-
Publication number: 20170234979Abstract: The present invention relates to a system and method using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Combining spectral compression with spread spectrum cross correlation provides unique advantages for positioning and navigation applications including carrier phase observable ambiguity resolution and direct, long-code spread spectrum signal acquisition. Alternatively, the present invention also provides unique advantages for establishing the validity of navigation signals in order to counter the possibilities of electronic attack using spoofing and/or denial methods.Type: ApplicationFiled: May 2, 2017Publication date: August 17, 2017Inventors: MICHAEL B. MATHEWS, PETER F. MACDORAN
-
Patent number: 9658341Abstract: The present invention relates to a system and method using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Combining spectral compression with spread spectrum cross correlation provides unique advantages for positioning and navigation applications including carrier phase observable ambiguity resolution and direct, long-code spread spectrum signal acquisition. Alternatively, the present invention also provides unique advantages for establishing the validity of navigation signals in order to counter the possibilities of electronic attack using spoofing and/or denial methods.Type: GrantFiled: May 17, 2013Date of Patent: May 23, 2017Assignee: Telecommunication Systems, Inc.Inventors: Michael B. Mathews, Peter F. MacDoran
-
Patent number: 9455762Abstract: The present invention relates to a system and method for positioning and navigation using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Examples of these signals of opportunity include but are not limited to GPS, GLONASS, cellular Code Division Multiple Access (CDMA) communications signals, and 802.11 Wi-Fi. Combining spectral compression with spread spectrum cross correlation enables extraction of code and carrier observables without the need to implement the tracking loops (e.g. Costas tracking loop) commonly used in conventional GNSS receivers. For applications where dynamics and transmission medium may make it difficult to continuously track carrier phase, the hybrid approach of the present invention has significant utility.Type: GrantFiled: June 30, 2015Date of Patent: September 27, 2016Assignee: Telecommunication Systems, Inc.Inventors: Michael B. Mathews, Peter F. MacDoran
-
Publication number: 20160131751Abstract: Doppler Aided Inertial Navigation (DAIN) facilitates the determination of position, velocity and direction of mobile devices operating in highly obstructed GPS/GNSS environments. Delivering high precision, high resolution positioning information using signals of opportunity, the present invention measures the Doppler shift of a moving device using a variety of signals combined with inertial accelerometers and environmental sensors to deliver an autonomous positioning and navigation capability that does not require external infrastructure or a priori knowledge of signal sources.Type: ApplicationFiled: December 11, 2015Publication date: May 12, 2016Applicant: TELECOMMUNICATION SYSTEMS, INC.Inventors: MICHAEL B. MATHEWS, PETER F. MACDORAN
-
Publication number: 20160033649Abstract: A system for providing physical state estimation that can include an emitter configured to emit a structured energy emission within a transmission medium. The system can also include a transponder configured to receive the structured energy emission propagated through a transmission medium from the emitter emit the structured energy emission without significant modification of the internal structure of the energy emission. The system can further include an interceptor configured to receive the transponded structured energy emission propagated through a transmission medium from the emitter. The interceptor can also be configured to process the received emissions using spectral compression utilizing a non-linear operation to produce a set of observables suitable for physical state estimation and communicate the set of observables to a physical state estimator. The yet further include a physical state estimator configured to determine member of the relative physical state.Type: ApplicationFiled: July 20, 2015Publication date: February 4, 2016Applicant: TELECOMMUNICATION SYSTEMS, INC.Inventors: MICHAEL B. MATHEWS, MICHAEL O. DAVIES, PETER F. MACDORAN
-
Patent number: 9239376Abstract: Doppler Aided Inertial Navigation (DAIN) facilitates the determination of position, velocity and direction of mobile devices operating in highly obstructed GPS/GNSS environments. Delivering high precision, high resolution positioning information using signals of opportunity, the present invention measures the Doppler shift of a moving device using a variety of signals combined with inertial accelerometers and environmental sensors to deliver an autonomous positioning and navigation capability that does not require external infrastructure or a priori knowledge of signal sources.Type: GrantFiled: October 7, 2011Date of Patent: January 19, 2016Assignee: Telecommunication Systems, Inc.Inventors: Michael B. Mathews, Peter F. MacDoran
-
Publication number: 20150303989Abstract: The present invention relates to a system and method for positioning and navigation using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Examples of these signals of opportunity include but are not limited to GPS, GLONASS, cellular Code Division Multiple Access (CDMA) communications signals, and 802.11 Wi-Fi. Combining spectral compression with spread spectrum cross correlation enables extraction of code and carrier observables without the need to implement the tracking loops (e.g. Costas tracking loop) commonly used in conventional GNSS receivers. For applications where dynamics and transmission medium may make it difficult to continuously track carrier phase, the hybrid approach of the present invention has significant utility.Type: ApplicationFiled: June 30, 2015Publication date: October 22, 2015Applicant: TELECOMMUNICATION SYSTEMS, INC.Inventors: MICHAEL B. MATHEWS, PETER F. MACDORAN
-
Patent number: 9097783Abstract: The present invention relates to a system and method for positioning and navigation using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Examples of these signals of opportunity include but are not limited to GPS, GLONASS, cellular Code Division Multiple Access (CDMA) communications signals, and 802.11 Wi-Fi. Combining spectral compression with spread spectrum cross correlation enables extraction of code and carrier observables without the need to implement the tracking loops (e.g. Costas tracking loop) commonly used in conventional GNSS receivers. For applications where dynamics and transmission medium may make it difficult to continuously track carrier phase, the hybrid approach of the present invention has significant utility.Type: GrantFiled: January 23, 2012Date of Patent: August 4, 2015Assignee: TELECOMMUNICATION SYSTEMS, INC.Inventors: Michael B. Mathews, Peter F. MacDoran
-
Publication number: 20140062781Abstract: The present invention relates to a system and method using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Combining spectral compression with spread spectrum cross correlation provides unique advantages for positioning and navigation applications including carrier phase observable ambiguity resolution and direct, long-code spread spectrum signal acquisition. Alternatively, the present invention also provides unique advantages for establishing the validity of navigation signals in order to counter the possibilities of electronic attack using spoofing and/or denial methods.Type: ApplicationFiled: May 17, 2013Publication date: March 6, 2014Applicant: Loctronix CorporationInventors: Michael B. Mathews, Peter F. MacDoran
-
Publication number: 20120169542Abstract: The present invention relates to a system and method for positioning and navigation using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Examples of these signals of opportunity include but are not limited to GPS, GLONASS, cellular Code Division Multiple Access (CDMA) communications signals, and 802.11 Wi-Fi. Combining spectral compression with spread spectrum cross correlation enables extraction of code and carrier observables without the need to implement the tracking loops (e.g. Costas tracking loop) commonly used in conventional GNSS receivers. For applications where dynamics and transmission medium may make it difficult to continuously track carrier phase, the hybrid approach of the present invention has significant utility.Type: ApplicationFiled: January 23, 2012Publication date: July 5, 2012Inventors: Michael B. Mathews, Peter F. MacDoran
-
Publication number: 20120086606Abstract: Doppler Aided Inertial Navigation (DAIN) facilitates the determination of position, velocity and direction of mobile devices operating in highly obstructed GPS/GNSS environments. Delivering high precision, high resolution positioning information using signals of opportunity, the present invention measures the Doppler shift of a moving device using a variety of signals combined with inertial accelerometers and environmental sensors to deliver an autonomous positioning and navigation capability that does not require external infrastructure or a priori knowledge of signal sources.Type: ApplicationFiled: October 7, 2011Publication date: April 12, 2012Inventors: Michael B. Mathews, Peter F. MacDoran
-
Publication number: 20110234454Abstract: The present invention relates to a system and method for providing location determination in a configured environment in which Global Navigation Satellite System Signals are not available. In this regard, local beacon systems generate spread spectrum CDMA signals that are received by spectral compression units that derive physically meaningful observations without a requirement for correlation of the intercepted energy by means of the known spreading codes. The invention can coexist with communication assets already in place, and the design allows for self calibration, which simplifies installation and usage. The invention has utility in applications in which GNSS signals are unavailable or limited, for example, in warehouse inventory management, in search and rescue operations and in asset tracking in indoor environments.Type: ApplicationFiled: February 17, 2011Publication date: September 29, 2011Applicant: LOCTRONIX CORPORATIONInventors: Michael B. Mathews, Kenn L. Gold, Peter F. MacDoran
-
Patent number: 7916074Abstract: The present invention relates to a system and method for providing location determination in a configured environment in which Global Navigation Satellite System Signals may not be available. In this regard, local beacon systems generate spread spectrum CDMA signals that are received by spectral compression units that derive physically meaningful observations without a requirement for correlation of the intercepted energy by means of the known spreading codes. The invention can coexist with communication assets already in place, and the design allows for self calibration, which simplifies installation and usage. The invention has utility in applications in which GNSS signals are unavailable or limited, for example, in warehouse inventory management, in search and rescue operations and in asset tracking in indoor environments.Type: GrantFiled: February 17, 2009Date of Patent: March 29, 2011Assignee: Loctronix CorporationInventors: Michael B. Mathews, Kenn L. Gold, Peter F. MacDoran
-
Publication number: 20090256750Abstract: The present invention relates to a system and method for providing location determination in a configured environment in which Global Navigation Satellite System Signals are not available. In this regard, local beacon systems generate spread spectrum CDMA signals that are received by spectral compression units that derive physically meaningful observations without a requirement for correlation of the intercepted energy by means of the known spreading codes. The invention can coexist with communication assets already in place, and the design allows for self calibration, which simplifies installation and usage. The invention has utility in applications in which GNSS signals are unavailable or limited, for example, in warehouse inventory management, in search and rescue operations and in asset tracking in indoor environments.Type: ApplicationFiled: February 17, 2009Publication date: October 15, 2009Applicant: LOCTRONIX CORPORATIONInventors: Michael B. Mathews, Kenn L. Gold, Peter F. MacDoran
-
Patent number: 7511662Abstract: The present invention relates to a system and method for providing location determination in a configured environment in which Global Navigation Satellite System Signals may not be available. In this regard, local beacon systems generate spread spectrum CDMA signals that are received by spectral compression units that derive physically meaningful observations without a requirement for correlation of the intercepted energy by means of the known spreading codes. The invention can coexist with communication assets already in place, and the design allows for self calibration, which simplifies installation and usage. The invention has utility in applications in which GNSS signals are unavailable or limited, for example, in warehouse inventory management, in search and rescue operations and in asset tracking in indoor environments.Type: GrantFiled: April 6, 2007Date of Patent: March 31, 2009Assignee: Loctronix CorporationInventors: Michael B. Mathews, Kenn L. Gold, Peter F. MacDoran
-
Patent number: 5757916Abstract: A method and apparatus for authenticating the identity of a remote user entity where the identity of such user entity is authenticated by use of information specific to geodetic location of the user entity but that changes constantly, making "spoofing" the host device extremely difficult. The invention is preferably implemented utilizing satellite positioning technology to produce the identifying information.Type: GrantFiled: October 6, 1995Date of Patent: May 26, 1998Assignee: International Series Research, Inc.Inventors: Peter F. MacDoran, Michael B. Mathews, Fred A. Ziel, Kenn L. Gold, Steven M. Anderson, Mark A. Coffey, Dorothy E. Denning
-
Patent number: 5347285Abstract: A method and system for tracking the position of at least one moving object, such as, an airborne meteorological instrument from a ground processing station by intercepting wideband spread spectrum signals transmitted from a plurality of satellites in which the code sequence of the signals is not known comprises a receiver circuit in the moving object which compresses the wideband signals received into a narrow band, removes any frequency bias with a reference oscillator having a frequency offset value, forms a narrow analog base-band and transmits to the processing station at which spectral lines are produced and compared with synthetic spectrum values to determine the identity of each satellite, the reference oscillator frequency offset value is estimated, and the location and velocity of the moving object is determined.Type: GrantFiled: June 15, 1992Date of Patent: September 13, 1994Assignee: A.I.R., Inc.Inventors: Peter F. MacDoran, David B. Call, Kenneth L. Gold
-
Patent number: 4797677Abstract: The invention permits a user to derive his pseudo range from earth-orbiting, signal-transmitting satellites without knowledge of the code sequence of modulation carried by the signal, if any. A modulated radio frequency signal having a component at a given frequency, which is transmitted from a satellite is intercepted at a user position. The component is recovered from the intercepted signal. The phase and frequency of the component are measured. From these measurements and similar measurements from other such satellites, the pseudo range of the satellite can be derived. Specifically, a fractional phase is derived from the measured phase and frequency of the intercepted signal. A Doppler range value is also derived from the measured frequencies of the satellites. The Doppler range value is divided by the wavelength of the given frequency to produce an integer and a remainder. The integer is added to the fractional phase to produce a value proportional to the pseudo range.Type: GrantFiled: May 19, 1986Date of Patent: January 10, 1989Assignee: Istac, IncorporatedInventors: Peter F. MacDoran, Donovan J. Spitzmesser