Patents by Inventor Si Hun JO

Si Hun JO 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).

  • Stabilization system for satellite tracking antenna using gyro and kalman filter and stabilization control method for satellite tracking antenna
    Patent number: 9502763
    Abstract: A stabilization control method for a satellite tracking antenna disclosed herein includes outputting a monopulse signal and a gyro signal through a satellite tracking antenna having a gyro mounted thereto, under a situation that disturbance is applied to the satellite tracking antenna, inputting the output monopulse signal and gyro signal into a Kalman filter for stabilization of the satellite tracking antenna, defining a state vector of the Kalman filter based on a pointing-error angle for the satellite tracking, corresponding to the monopulse signal, and a pointing-error angular velocity for the satellite tracking, corresponding to the gyro signal, predicting an original monopulse signal corresponding to a state prior to distortion of the monopulse signal based on the defined state vector, and continuously updating the prediction of the original monopulse signal, and carrying out the stabilization control for the satellite tracking antenna by using the predicted original monopulse signal as a pointing-error
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: November 22, 2016
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Si Hun Jo, Ho Jung Lee, Byoung Uk Nam, Jong Wan Heo
  • STABILIZATION SYSTEM FOR SATELLITE TRACKING ANTENNA USING GYRO AND KALMAN FILTER AND STABILIZATION CONTROL METHOD FOR SATELLITE TRACKING ANTENNA
    Publication number: 20150116152
    Abstract: A stabilization control method for a satellite tracking antenna disclosed herein includes outputting a monopulse signal and a gyro signal through a satellite tracking antenna having a gyro mounted thereto, under a situation that disturbance is applied to the satellite tracking antenna, inputting the output monopulse signal and gyro signal into a Kalman filter for stabilization of the satellite tracking antenna, defining a state vector of the Kalman filter based on a pointing-error angle for the satellite tracking, corresponding to the monopulse signal, and a pointing-error angular velocity for the satellite tracking, corresponding to the gyro signal, predicting an original monopulse signal corresponding to a state prior to distortion of the monopulse signal based on the defined state vector, and continuously updating the prediction of the original monopulse signal, and carrying out the stabilization control for the satellite tracking antenna by using the predicted original monopulse signal as a pointing-error
    Type: Application
    Filed: April 21, 2014
    Publication date: April 30, 2015
    Inventors: Si Hun JO, Ho Jung LEE, Byoung Uk NAM, Jong Wan HEO