Patents by Inventor Sanghun IM

Sanghun IM 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).

  • Apparatus of multiple targets management for multistatic PCL based target localization
    Patent number: 11604268
    Abstract: This application relates to a passive coherent location (PCL) system. In one aspect, the PCL system includes a signal measurement device configured to receive a plurality of signals from a plurality of illuminators and generate an In-phase signal and a Quadrature signal corresponding to each illuminator using the received signals. The PCL system also includes a signal processing device configured to detect a first target using the In-phase and Quadrature signals and measure a bistatic range of the first target and a bistatic velocity of the first target to generate a plurality of pieces of line track information corresponding to the first target. The PCL system further includes a locating device configured to generate target track information of the first target using the line track information and predict a position vector and a velocity vector of the first target using the target track information.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: March 14, 2023
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Inhwan Jeong, Sanhae Kim, Kyuha Song, Junil Ahn, Hyungyu Kwak, Jonghwan Lee, Sanghun Im
  • APPARATUS OF MULTIPLE TARGETS MANAGEMENT FOR MULTISTATIC PCL BASED TARGET LOCALIZATION
    Publication number: 20210318425
    Abstract: This application relates to a passive coherent location (PCL) system. In one aspect, the PCL system includes a signal measurement device configured to receive a plurality of signals from a plurality of illuminators and generate an In-phase signal and a Quadrature signal corresponding to each illuminator using the received signals. The PCL system also includes a signal processing device configured to detect a first target using the In-phase and Quadrature signals and measure a bistatic range of the first target and a bistatic velocity of the first target to generate a plurality of pieces of line track information corresponding to the first target. The PCL system further includes a locating device configured to generate target track information of the first target using the line track information and predict a position vector and a velocity vector of the first target using the target track information.
    Type: Application
    Filed: January 27, 2021
    Publication date: October 14, 2021
    Inventors: Inhwan JEONG, Sanhae KIM, Kyuha SONG, Junil AHN, Hyungyu KWAK, Jonghwan LEE, Sanghun IM
  • Apparatus and method for secure communication using artificial noise scheme
    Patent number: 10999000
    Abstract: Disclosed are a secure communication device and a secure communication method using an artificial noise scheme. The secure communication method between a multi-antenna legal transmission device and a multi-antenna legal reception device includes determining a power allocation ratio for a system parameter, by the legal reception device, generating a transmission signal including a secret information message based on the determined power allocation ratio and artificial noise, and transmitting the generated transmission signal to the legal reception device.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: May 4, 2021
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeongseok Ha, Sangseok Yun, Sanghun Im
  • APPARATUS AND METHOD FOR SECURE COMMUNICATION USING ARTIFICIAL NOISE SCHEME
    Publication number: 20190229833
    Abstract: Disclosed are a secure communication device and a secure communication method using an artificial noise scheme. The secure communication method between a multi-antenna legal transmission device and a multi-antenna legal reception device includes determining a power allocation ratio for a system parameter, by the legal reception device, generating a transmission signal including a secret information message based on the determined power allocation ratio and artificial noise, and transmitting the generated transmission signal to the legal reception device.
    Type: Application
    Filed: October 16, 2018
    Publication date: July 25, 2019
    Inventors: Jeongseok HA, Sangseok YUN, Sanghun IM
  • Method and apparatus for generating secret key in wireless communication network
    Patent number: 10038517
    Abstract: A method and apparatus for generating a secret key includes: acquiring a random sequence by use of reciprocity of a radio channel; generating the secret key based on the random sequence; and stopping generating the secret key when it is determined that the radio channel is flat based on flatness measured from the radio channel.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: July 31, 2018
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Byung-Jae Kwak, Jeongseok Ha, Sanghun Im, Sangseok Yun
  • METHOD AND APPARATUS FOR GENERATING SECRET KEY IN WIRELESS COMMUNICATION NETWORK
    Publication number: 20160337122
    Abstract: A method and apparatus for generating a secret key includes: acquiring a random sequence by use of reciprocity of a radio channel; generating the secret key based on the random sequence; and stopping generating the secret key when it is determined that the radio channel is flat based on flatness measured from the radio channel.
    Type: Application
    Filed: May 11, 2016
    Publication date: November 17, 2016
    Inventors: Byung-Jae KWAK, Jeongseok HA, Sanghun IM, Sangseok YUN