Patents by Inventor Ruth Dagmar Kreichauf

Ruth Dagmar Kreichauf 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).

  • Publication number: 20240337762
    Abstract: An inertial coasting monitoring system comprises aiding sensors onboard a vehicle, including a GNSS receiver and at least one non-GNSS aiding sensor, and an inertial measurement unit (IMU) that produces inertial measurements for the vehicle. A navigation system is coupled to the aiding sensors and the IMU. The navigation system comprises a main navigation filter and an inertial navigation system (INS). The navigation filter receives aiding data from the aiding sensors including GNSS aided data, and the INS receives inertial data from the IMU. An onboard inertial coasting monitor communicates with the navigation system, and receives inertial data from the IMU and aiding data from at least one non-GNSS aiding sensor. The inertial coasting monitor comprises inertial coast sub-filters and communicates with the navigation filter. The inertial coasting monitor performs a position detection process and/or a velocity detection process to detect if there is a fault in the aiding data.
    Type: Application
    Filed: January 13, 2022
    Publication date: October 10, 2024
    Applicant: Honeywell International Inc.
    Inventors: Kenneth Steven Morgan, Ruth Dagmar Kreichauf, Benjamin Meier
  • Patent number: 11994597
    Abstract: Systems and methods for operating a navigation system and detecting GNSS spoofing using a chip-scale atomic clock are provided herein.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: May 28, 2024
    Assignee: Honeywell International Inc.
    Inventors: Michael Ray Elgersma, Ruth Dagmar Kreichauf
  • Patent number: 11994596
    Abstract: Systems and methods for operating a navigation system and detecting GNSS spoofing using a chip-scale atomic clock are provided herein.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: May 28, 2024
    Assignee: Honeywell International Inc.
    Inventors: Michael Ray Elgersma, Ruth Dagmar Kreichauf, Stephen Artie Rooks
  • Publication number: 20240027628
    Abstract: A system comprises a GNSS receiver that receives a GNSS signal and produces GNSS measurements; a plurality of inertial sensors that produce inertial data; and a navigation system comprising a Kalman filter and an inertial navigation unit. The Kalman filter receives the GNSS measurements and calculates pseudo-range residuals, delta-range residuals, pseudo-range chi square values, delta-range chi square values, accelerometer bias estimates, and gyroscope bias estimates. A spoof detection system communicates with the Kalman filter and comprises a set of detection monitors that determine an integrity of the GNSS measurements. The detection monitors detect if the pseudo-range residuals, the delta-range residuals, the pseudo-range chi-square values, the delta-range chi-square values, the accelerometer bias estimates, or the gyroscope bias estimates, go beyond a fail threshold indicating that the GNSS signal is abnormal.
    Type: Application
    Filed: July 25, 2022
    Publication date: January 25, 2024
    Applicant: Honeywell International Inc.
    Inventors: Ruth Dagmar Kreichauf, Reed R. May
  • Publication number: 20220221588
    Abstract: Systems and methods for operating a navigation system and detecting GNSS spoofing using a chip-scale atomic clock are provided herein.
    Type: Application
    Filed: November 8, 2021
    Publication date: July 14, 2022
    Applicant: Honeywell International Inc.
    Inventors: Michael Ray Elgersma, Ruth Dagmar Kreichauf, Stephen Artie Rooks
  • Publication number: 20220221589
    Abstract: Systems and methods for operating a navigation system and detecting GNSS spoofing using a chip-scale atomic clock are provided herein.
    Type: Application
    Filed: November 8, 2021
    Publication date: July 14, 2022
    Applicant: Honeywell International Inc.
    Inventors: Michael Ray Elgersma, Ruth Dagmar Kreichauf
  • Patent number: 9759565
    Abstract: A ring laser gyroscope comprises a block defining a hermetically sealed cavity for a ring laser formed when a lasing medium disposed within the cavity is excited. A cathode and an anode are attached to the block at two fill positions comprised within the cavity, and exposed to the lasing medium such that the lasing medium is ionized when a high voltage pulse is supplied across cathode and anode. At least two RF electrodes are attached to the block, positioned on opposing sides to generate a capacitive discharge for the purpose of keeping the lasing medium excited. The gyro comprises a matching circuit to tune the frequency of a radio frequency (RF) signal generated by a RF power source before the RF signal is sent to the electrodes. The matching circuit is coupled to the RF electrodes via respective lead wires, and comprises an element matching network.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: September 12, 2017
    Assignee: Honeywell International Inc.
    Inventors: Terry Dean Stark, Jason Wiebesick, Travis Edward Christle, Douglas R. Carlson, Ruth Dagmar Kreichauf
  • Patent number: 9671226
    Abstract: A method of magnetic sensor calibration for aircraft comprises obtaining attitude data, heading angle data, position data, and date information; inputting the position data and date into an earth magnetic field (EMF) model and into an EMF model correction map; inputting the attitude and heading angle data into a NOLL to body frame transformation module; outputting an EMF model vector from the EMF model; outputting an EMF correction vector from the EMF model correction map; compensating the EMF model vector with the EMF correction vector to produce a corrected EMF model vector; inputting the corrected EMF model vector into the transformation module; inputting magnetic field measurements data into a calibration processing unit; inputting true earth magnetic field data from the transformation module into the processing unit; computing compensation coefficients in the processing unit based on the magnetic field measurements and the true earth magnetic field; and storing the compensation coefficients.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: June 6, 2017
    Assignee: Honeywell International Inc.
    Inventors: John R. Morrison, Vibhor L. Bageshwar, Ruth Dagmar Kreichauf, Zdenek Kana
  • Publication number: 20160209213
    Abstract: A ring laser gyroscope comprises a block defining a hermetically sealed cavity for a ring laser formed when a lasing medium disposed within the cavity is excited. A cathode and an anode are attached to the block at two fill positions comprised within the cavity, and exposed to the lasing medium such that the lasing medium is ionized when a high voltage pulse is supplied across cathode and anode. At least two RF electrodes are attached to the block, positioned on opposing sides to generate a capacitive discharge for the purpose of keeping the lasing medium excited. The gyro comprises a matching circuit to tune the frequency of a radio frequency (RF) signal generated by a RF power source before the RF signal is sent to the electrodes. The matching circuit is coupled to the RF electrodes via respective lead wires, and comprises an element matching network.
    Type: Application
    Filed: January 15, 2015
    Publication date: July 21, 2016
    Inventors: Terry Dean Stark, Jason Wiebesick, Travis Edward Christle, Douglas R. Carlson, Ruth Dagmar Kreichauf
  • Publication number: 20160178371
    Abstract: A method of magnetic sensor calibration for aircraft comprises obtaining attitude data, heading angle data, position data, and date information; inputting the position data and date into an earth magnetic field (EMF) model and into an EMF model correction map; inputting the attitude and heading angle data into a NOLL to body frame transformation module; outputting an EMF model vector from the EMF model; outputting an EMF correction vector from the EMF model correction map; compensating the EMF model vector with the EMF correction vector to produce a corrected EMF model vector; inputting the corrected EMF model vector into the transformation module; inputting magnetic field measurements data into a calibration processing unit; inputting true earth magnetic field data from the transformation module into the processing unit; computing compensation coefficients in the processing unit based on the magnetic field measurements and the true earth magnetic field; and storing the compensation coefficients.
    Type: Application
    Filed: December 17, 2014
    Publication date: June 23, 2016
    Inventors: John R. Morrison, Vibhor L. Bageshwar, Ruth Dagmar Kreichauf, Zdenek Kana
  • Publication number: 20150019159
    Abstract: A system comprises an inertial measurement unit comprising one or more gyroscopes configured to measure angular velocity about a respective one of three independent axes and one or more accelerometers configured to measure specific force along a respective one of the three independent axes; a magnetometer configured to measure strength of a local magnetic field along each of the three independent axes; and a processing device coupled to the inertial measurement unit and the magnetometer; the processing device configured to compute kinematic state data for the system based on measurements received from the magnetometer and the inertial measurement unit. The processing device is further configured to calculate magnetometer measurement calibration parameters using a first technique when position data is unavailable and to calculate magnetometer measurement calibration parameters using a second technique when position data is available.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 15, 2015
    Inventors: Michael Ray Elgersma, Vibhor L. Bageshwar, Ruth Dagmar Kreichauf