Patents by Inventor Huan-Wan Tseng
Huan-Wan Tseng 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).
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Patent number: 12235365Abstract: System and method for concurrent STAP (space-time adaptive processing) filtering of interference signals (e.g., jamming signals) from signals received at a broadband antenna array via satellite and terrestrial broadcasts and communication systems operating in the 950 MHz to 1.65 GHz L-band, including but not limited to Link 16 terrestrial communications, Iridium satellite communications, and the Global Positioning System (GPS) and other Global Navigation Satellite Systems (GNSS). While the GPS/GNSS signals are protected against jamming using Nulling of the interfering signals, the Iridium and other communication systems' signals are protected using Beamforming. Use of a common broadband antenna and common front-end signal processing of the received signals enables an integrated system for use on a wide range of platforms, including without limitation size-, weight-, and power-constrained platforms such as drones, unmanned aerial vehicles (UAVs), and helicopters.Type: GrantFiled: January 21, 2022Date of Patent: February 25, 2025Assignee: Mayflower Communications Company, Inc.Inventors: Christopher Jonathan Zarowski, Huan-Wan Tseng, William LeComte
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Publication number: 20220146687Abstract: System and method for concurrent STAP (space-time adaptive processing) filtering of interference signals (e.g., jamming signals) from signals received at a broadband antenna array via satellite and terrestrial broadcasts and communication systems operating in the 950 MHz to 1.65 GHz L-band, including but not limited to Link 16 terrestrial communications, Iridium satellite communications, and the Global Positioning System (GPS) and other Global Navigation Satellite Systems (GNSS). While the GPS/GNSS signals are protected against jamming using Nulling of the interfering signals, the Iridium and other communication systems' signals are protected using Beamforming. Use of a common broadband antenna and common front-end signal processing of the received signals enables an integrated system for use on a wide range of platforms, including without limitation size-, weight-, and power-constrained platforms such as drones, unmanned aerial vehicles (UAVs), and helicopters.Type: ApplicationFiled: January 21, 2022Publication date: May 12, 2022Applicant: Mayflower Communications Company, IncInventors: Christopher Jonathan Zarowski, Huan-Wan Tseng, William LeComte
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Patent number: 11262457Abstract: System and method for concurrently protecting Iridium and GPS L1/L2 band received satellite signals against interference signals (e.g., jamming signals) using space-time adaptive processing (STAP). While the GPS signal is protected against jamming using Nulling of the interfering signals, the Iridium signal is protected using Beamforming. A single broadband small controlled reception pattern antenna (sCRPA) array receives both the GPS (L1 and L2) and Iridium signals for the STAP-based antijam solutions outputting filtered Iridium and GPS signals. Use of a common (small) broadband antenna and common front end signal processing of the received signals enables an integrated system for use on size, weight, and power constrained platforms such as drones, unmanned aerial vehicles (UAVs), and helicopters.Type: GrantFiled: January 29, 2019Date of Patent: March 1, 2022Assignee: Mayflower Communications Company, INC.Inventors: Christopher Jonathan Zarowski, Huan-Wan Tseng, William LeComte
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Publication number: 20200241145Abstract: System and method for concurrently protecting Iridium and GPS L1/L2 band received satellite signals against interference signals (e.g., jamming signals) using space-time adaptive processing (STAP). While the GPS signal is protected against jamming using Nulling of the interfering signals, the Iridium signal is protected using Beamforming. A single broadband small controlled reception pattern antenna (sCRP) array receives both the GPS (L1 and L2) and Iridium signals for the STAP-based antijam solutions outputting filtered Iridium and GPS signals. Use of a common (small) broadband antenna and common front end signal processing of the received signals enables an integrated system for use on size, weight, and power constrained platforms such as drones, unmanned aerial vehicles (UAVs), and helicopters.Type: ApplicationFiled: January 29, 2019Publication date: July 30, 2020Applicant: Mayflower Communications Company, Inc.Inventors: Christopher Jonathan Zarowski, Huan-Wan Tseng, William LeComte
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Patent number: 9581699Abstract: System and method for mean phase compensation of code and carrier phase distortions induced by Space Time Adaptive Processing (STAP) filters used for removing interferences from received GPS signals. The phase distortion is mitigated (without the use of beamforming) using a single STAP filter for processing the GPS satellite channels in which appropriate bundling of constraints is applied to the filter weights. The complete solution can be contained in the antenna electronics with no required changes to the legacy GPS receiver.Type: GrantFiled: December 2, 2013Date of Patent: February 28, 2017Assignee: Mayflower Communications Company, Inc.Inventors: Christopher Jonathan Zarowski, Jianhui Luo, Huan-Wan Tseng
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Patent number: 9429660Abstract: System and method for determining the roll rate and roll angle of a spinning platform. The IQ amplitude and/or phase characteristics of GPS signals received at a single receiver antenna are measured using the signals output directly by a correlator that is driven at the satellite tracking frequency used for forming the navigation solution. The roll rate and roll angle are determined in real time by a Roll filter, which is preferably an Extended Kalman Filter (EKF) employing probabilistic data association, whose inputs include the measured IQ characteristics and the navigation solution. Data from non-GPS measurement sources is optionally provided to update the navigation and/or roll solution.Type: GrantFiled: January 3, 2012Date of Patent: August 30, 2016Assignee: Mayflower Communications Company, Inc.Inventors: Jianhui Luo, Wallace E. Vander Velde, Huan-Wan Tseng, Triveni N. Upadhyay
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Publication number: 20150226856Abstract: System and method for mean phase compensation of code and carrier phase distortions induced by Space Time Adaptive Processing (STAP) filters used for removing interferences from received GPS signals. The phase distortion is mitigated (without the use of beamforming) using a single STAP filter for processing the GPS satellite channels in which appropriate bundling of constraints is applied to the filter weights. The complete solution can be contained in the antenna electronics with no required changes to the legacy GPS receiver.Type: ApplicationFiled: December 2, 2013Publication date: August 13, 2015Applicant: Mayflower Communications Company, Inc.Inventors: Christopher Jonathan Zarowski, Jianhui Luo, Huan-Wan Tseng
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Publication number: 20130169477Abstract: System and method for determining the roll rate and roll angle of a spinning platform. The IQ amplitude and/or phase characteristics of GPS signals received at a single receiver antenna are measured using the signals output directly by a correlator that is driven at the satellite tracking frequency used for forming the navigation solution. The roll rate and roll angle are determined in real time by a Roll filter, which is preferably an Extended Kalman Filter (EKF) employing probabilistic data association, whose inputs include the measured IQ characteristics and the navigation solution. Data from non-GPS measurement sources is optionally provided to update the navigation and/or roll solution.Type: ApplicationFiled: January 3, 2012Publication date: July 4, 2013Inventors: Jianhui Luo, Wallace E. Vander Velde, Huan-Wan Tseng, Triveni N. Upadhyay
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Patent number: 8269667Abstract: A system and method for determining the roll rate and roll angle of a spinning platform by using the measured phase and/or amplitude differences between the GPS satellite signals received on two or more antennas. The measured signal differences and the navigation solution from a GPS receiver are processed in a roll filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines in the presence as well as in the absence of jamming, and where the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.Type: GrantFiled: November 16, 2011Date of Patent: September 18, 2012Assignee: Mayflower Communications Company, Inc.Inventors: Wallace E. Vander Velde, John H. Cafarella, Huan-Wan Tseng, George Dimos, Triveni N. Upadhyay, Jianhui Luo
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Publication number: 20120068884Abstract: A system and method for determining the roll rate and roll angle of a spinning platform by using the measured phase and/or amplitude differences between the GPS satellite signals received on two or more antennas. The measured signal differences and the navigation solution from a GPS receiver are processed in a roll filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines in the presence as well as in the absence of jamming, and where the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.Type: ApplicationFiled: November 16, 2011Publication date: March 22, 2012Inventors: Wallace E. Vander Velde, John H. Cafarella, Huan-Wan Tseng, George Dimos, Triveni N. Upadhyay, Jianhui Luo
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Patent number: 8106811Abstract: A system and method for determining the roll rate and roll angle of a spinning platform in a jamming environment, by suppressing the interference signals from the received GPS signals and using the measured phase and amplitude differences between the GPS satellite signals received on two or more antennas. The measured signal differences and the navigation solution from a GPS receiver are processed in a roll filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines in the presence of jamming, and where the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.Type: GrantFiled: May 15, 2009Date of Patent: January 31, 2012Assignee: Mayflower Communications Company, Inc.Inventors: Wallace E. Vander Velde, John H. Cafarella, Huan-Wan Tseng, George Dimos, Triveni N. Upadhyay, Jianhui Luo
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Patent number: 7994971Abstract: A system and method for determining the roll rate and roll angle of a spinning platform, using the measured phase differences between the GPS satellite signals received on two or more antennas. The measured phase differences and the navigation solution from a GPS receiver are processed in a Kalman filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines, in which the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.Type: GrantFiled: January 9, 2008Date of Patent: August 9, 2011Assignee: Mayflower Communications Company, Inc.Inventors: Wallace Vander Velde, John Cafarella, Huan-Wan Tseng, George Dimos, Triveni Upadhyay
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Publication number: 20100289687Abstract: A system and method for determining the roll rate and roll angle of a spinning platform in a jamming environment, by suppressing the interference signals from the received GPS signals and using the measured phase and amplitude differences between the GPS satellite signals received on two or more antennas. The measured signal differences and the navigation solution from a GPS receiver are processed in a roll filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines in the presence of jamming, and where the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.Type: ApplicationFiled: May 15, 2009Publication date: November 18, 2010Inventors: Wallace E. Vander Velde, John H. Cafarella, Huan-Wan Tseng, George Dimos, Teiveni N. Upadhyay, Jianhui Luo
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Publication number: 20100117894Abstract: A system and method for determining the roll rate and roll angle of a spinning platform, using the measured phase differences between the GPS satellite signals received on two or more antennas. The measured phase differences and the navigation solution from a GPS receiver are processed in a Kalman filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines, in which the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.Type: ApplicationFiled: January 9, 2008Publication date: May 13, 2010Inventors: Wallace Vander Velde, John Cafarella, Huan-Wan Tseng, George Dimos, Triveni Upadhyay