Patents by Inventor Anthony Pritchard
Anthony Pritchard 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: 11679852Abstract: One embodiment of submerged superventilated blades (101) that provide hydrodynamic force to a vessel or aircraft (117) that can lift it above the surface of the water (106) at high speed by creating thrust with a wetted high pressure surface (111), the low pressure surface (112) being covered with a gas filled void in the liquid, thus preventing sudden loss of lift as speed increases due to cavitation or surface venting. Other embodiments are described and shown.Type: GrantFiled: January 13, 2021Date of Patent: June 20, 2023Inventor: Shaun Anthony Pritchard
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Patent number: 11668835Abstract: Systems and methods for GNSS spoofing detection using C/No based monitoring are provided. In certain embodiments, a system including at least one GNSS receiver that provides C/No for GNSS signals received from GNSS satellites. The system also includes a processor coupled to the at least one GNSS receiver. The processor executes instructions that cause the processor to calculate new C/No comparison values based on the C/No measurements and previous C/No comparison values. Further, the instructions cause the processor to compare the C/No measurements against the previous C/No comparison values. Moreover, the instructions cause the processor to determine whether one or more of the GNSS signals are spoofed based on the comparison of the C/No measurements against the previous C/No comparison values. Additionally, the instructions cause the processor to set the new C/No comparison values as the previous C/No comparison values.Type: GrantFiled: July 23, 2020Date of Patent: June 6, 2023Assignee: Honeywell International Inc.Inventors: Anthony Pritchard, Karl Abraham Keyzer, James Arthur McDonald
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Patent number: 11385356Abstract: A spoofing detection system including at least one antenna, a receiver and a controller is provided. The at least one receiver is in communication with the at least one antenna to receive detected satellite signals. The controller is configured to determine raw pseudorange values from the received satellite signals. The controller is further configured to apply at least one first filter on the raw pseudorange values to generate at least an output of first filtered pseudorange values. The controller is also conjured to compare an output of the first filtered pseudorange values with one of the raw pseudorange values and second filtered pseudorange values from a second filter. The controller is further configured to determine if spoofing is present in the received satellite signals based on a determined divergence between the output of first filtered pseudorange values and one of the raw pseudorange values and the second filtered pseudorange values.Type: GrantFiled: July 23, 2020Date of Patent: July 12, 2022Assignee: Honeywell International Inc.Inventors: James Arthur McDonald, Karl Abraham Keyzer, Anthony Pritchard
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Publication number: 20220057526Abstract: A system for detecting satellite signal spoofing using error state estimates is provided. The system includes at least one satellite receiver to receive satellite signals, at least one memory and at least one controller. The at least one memory is configured to store at least operation instructions. The at least one controller is in communication with the at least one satellite receiver and the at least one memory. The at least one controller is configured to determine state estimates from the received satellite signals. The at least one controller is further configured to determine error state estimates based at least in part on differences in current state estimates and differences in delayed state estimates. The controller further configured to determine if spoofing is occurring in one more of the received satellite signals when the error state estimates are greater than a select threshold.Type: ApplicationFiled: August 21, 2020Publication date: February 24, 2022Applicant: Honeywell International Inc.Inventors: Karl Abraham Keyzer, James Arthur McDonald, Anthony Pritchard
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Publication number: 20220026578Abstract: Systems and methods for GNSS spoofing detection using C/No based monitoring are provided. In certain embodiments, a system including at least one GNSS receiver that provides C/No for GNSS signals received from GNSS satellites. The system also includes a processor coupled to the at least one GNSS receiver. The processor executes instructions that cause the processor to calculate new C/No comparison values based on the C/No measurements and previous C/No comparison values. Further, the instructions cause the processor to compare the C/No measurements against the previous C/No comparison values. Moreover, the instructions cause the processor to determine whether one or more of the GNSS signals are spoofed based on the comparison of the C/No measurements against the previous C/No comparison values. Additionally, the instructions cause the processor to set the new C/No comparison values as the previous C/No comparison values.Type: ApplicationFiled: July 23, 2020Publication date: January 27, 2022Applicant: Honeywell International Inc.Inventors: Anthony Pritchard, Karl Abraham Keyzer, James Arthur McDonald
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Publication number: 20220026579Abstract: A spoofing detection system including at least one antenna, a receiver and a controller is provided. The at least one receiver is in communication with the at least one antenna to receive detected satellite signals. The controller is configured to determine raw pseudorange values from the received satellite signals. The controller is further configured to apply at least one first filter on the raw pseudorange values to generate at least an output of first filtered pseudorange values. The controller is also conjured to compare an output of the first filtered pseudorange values with one of the raw pseudorange values and second filtered pseudorange values from a second filter. The controller is further configured to determine if spoofing is present in the received satellite signals based on a determined divergence between the output of first filtered pseudorange values and one of the raw pseudorange values and the second filtered pseudorange values.Type: ApplicationFiled: July 23, 2020Publication date: January 27, 2022Applicant: Honeywell International Inc.Inventors: James Arthur McDonald, Karl Abraham Keyzer, Anthony Pritchard
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Publication number: 20200363560Abstract: A vehicle disturbance and isolation detection system is provided. The system includes at least one measurement sensor that is configured to generate measurement signals, at least one filter that is used to sort disturbance causes in the measured signals by frequencies, at least one controller that is used to compare the sorted signal to at least one threshold to determine if an event has occurred, a memory to store at least operating instructions for the at least one controller, a controller that is in communication with the memory and a communication system that is in communication with the at least one controller. The communication system is configured to transmit determined events to a remote location.Type: ApplicationFiled: May 13, 2019Publication date: November 19, 2020Applicant: Honeywell International Inc.Inventors: Anthony Pritchard, Douglas Mark Weed, Mark A. Ahlbrecht
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Patent number: 7841917Abstract: A floatation device is disclosed that comprises a container 10 containing a liquefied gas, a gas chamber (60, FIG. 2) and a remotely operable device 29. The remotely operable device is switchable between a closed state in which fluid communication between the container and the gas chamber is prevented, and an open state in which fluid communication between the container and the gas chamber is enabled and vaporization of the liquefied gas charges the gas chamber with gas. The liquefied gas may be liquid nitrogen and the container may be heat insulated with an insulating vacuum cavity. A buoyancy unit (40, FIG. 2) which comprises a rigid enclosure (42, FIG. 2) defining an interior volume and a flexible diaphragm (55, FIG. 2) that partitions the interior volume into first and second chambers is also disclosed.Type: GrantFiled: August 20, 2008Date of Patent: November 30, 2010Assignee: Deep Sea Recovery LtdInventor: Philip Anthony Pritchard
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Publication number: 20100043692Abstract: A floatation device is disclosed that comprises a container 10 containing a liquefied gas, a gas chamber (60, FIG. 2) and a remotely operable device 29. The remotely operable device is switchable between a closed state in which fluid communication between the container and the gas chamber is prevented, and an open state in which fluid communication between the container and the gas chamber is enabled and vaporisation of the liquefied gas charges the gas chamber with gas. The liquefied gas may be liquid nitrogen and the container may be heat insulated with an insulating vacuum cavity. A buoyancy unit (40, FIG. 2) which comprises a rigid enclosure (42, FIG. 2) defining an interior volume and a flexible diaphragm (55, FIG. 2) that partitions the interior volume into first and second chambers is also disclosed.Type: ApplicationFiled: August 20, 2008Publication date: February 25, 2010Inventor: Philip Anthony Pritchard