Patents by Inventor Sashi Praveen Kalli

Sashi Praveen Kalli 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).

  • Patent number: 11933911
    Abstract: This document describes techniques for enabling radar system calibration with bistatic sidelobe compensation. Radar signals reflect off of a flat plate that changes orientation (e.g., elevation and/or azimuth angle) and position relative to a mounting position of a specific radar sensor being calibrated. For each radar sensor, measurements may be obtained across a range of translational positions of the flat plate. Highly accurate calibration errors are determined for each radar sensor this way. By calibrating radar systems repositioning the target during the data collection in this way, the prominence of any bistatic sidelobes appearing in measurements may be reduced or prevented, which may enable less-complex and more-accurate calibration of each unique radar system installation. An indication of each calibration error may be output for use in individually adjusting the mounting position of each specific radar sensor within a radar system.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: March 19, 2024
    Assignee: Aptiv Technologies AG
    Inventors: Armin Talai, Rafal Michal Burza, Sashi Praveen Kalli
  • Publication number: 20230408685
    Abstract: The present invention relates to a method (1o) for determining an elevation angle of an electromagnetic sensor mounted in a vehicle, wherein the method comprises the steps of exciting (11) a transmitter of the sensor with a plurality of different frequencies such that the transmitter radiates a plurality of first electromagnetic signals corresponding to the plurality of frequencies onto a target arranged in the field of view of the sensor, wherein each of the plurality of first electromagnetic signals is radiated at a different angle relative to the transmitter; receiving (12), by the sensor, a plurality of second electromagnetic signals being reflections of the first electromagnetic signals at the target; determining (13-17) the elevation angle of the sensor based on the second electromagnetic signals. The invention also relates to a corresponding sensor and a computer program for performing the method.
    Type: Application
    Filed: June 14, 2023
    Publication date: December 21, 2023
    Inventors: Sashi Praveen KALLI, Huaming WU, Roberto LEONARDI
  • Publication number: 20230056655
    Abstract: This document describes techniques for enabling radar system calibration with bistatic sidelobe compensation. Radar signals reflect off of a flat plate that changes orientation (e.g., elevation and/or azimuth angle) and position relative to a mounting position of a specific radar sensor being calibrated. For each radar sensor, measurements may be obtained across a range of translational positions of the flat plate. Highly accurate calibration errors are determined for each radar sensor this way. By calibrating radar systems repositioning the target during the data collection in this way, the prominence of any bistatic sidelobes appearing in measurements may be reduced or prevented, which may enable less-complex and more-accurate calibration of each unique radar system installation. An indication of each calibration error may be output for use in individually adjusting the mounting position of each specific radar sensor within a radar system.
    Type: Application
    Filed: August 19, 2021
    Publication date: February 23, 2023
    Inventors: Armin Talai, Rafal Michal Burza, Sashi Praveen Kalli