Patents by Inventor Cort Johnson

Cort Johnson 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).

  • Calibration and monitoring for 3-axis magnetometer arrays of arbitrary geometry
    Patent number: 10845432
    Abstract: A system and method for calibrating rigid and non-rigid arrays of 3-axis magnetometers. Such arrays might be used to analyze structures containing ferromagnetic material. The calibration determines scale factor and bias parameters of each magnetometer in the array, and the relative orientation and position of each magnetometer in the array. Once the parameters are determined, the actual magnetic field value at the magnetometer location can be simply related to magnetometer measurements. The method and system can be used to calibrate an array of 3-axis magnetometers in aggregate as opposed to individual magnetometers. This is critical in large arrays to increasing reproducibility of the calibration procedure and decreasing time required to complete calibration procedure.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: November 24, 2020
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Michael Sorensen, Philip Babcock, Cort Johnson, Neil Sunil Patel
  • Calibration and Monitoring for 3-Axis Magnetometer Arrays of Arbitrary Geometry
    Publication number: 20180003777
    Abstract: A system and method for calibrating rigid and non-rigid arrays of 3-axis magnetometers as disclosed. Such arrays might be used to analyze structures containing ferromagnetic material. The calibration determines scale factor and bias parameters of each magnetometer in the array, and the relative orientation and position of each magnetometer in the array. Once the parameters are determined, the actual magnetic field value at the magnetometer location can be simply related to magnetometer measurements. The method and system can be used to calibrate an array of 3-axis magnetometers in aggregate as opposed to individual magnetometers. This is critical in large arrays to increasing reproducibility of the calibration procedure and decreasing time required to complete calibration procedure.
    Type: Application
    Filed: June 30, 2017
    Publication date: January 4, 2018
    Inventors: Michael Sorensen, Philip Babcock, Cort Johnson, Neil Sunil Patel