Patents by Inventor Reza M. Dizaji

Reza M. Dizaji 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: 8976059
    Abstract: In one aspect, a method to identify and remove a false detection includes receiving a detection from a constant false alarm rate (CFAR) processor, performing a first similarity measure on adjacent coherent integration time values (CITs) corresponding to the detection, performing a second similarity measure on neighbor CITs corresponding to the detection, determining if at least one of the first or second similarity measure is below a threshold and discarding the detection if at least one of the first or second similarity measures is below the threshold.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: March 10, 2015
    Assignee: Raytheon Canada Limited
    Inventors: Reza M. Dizaji, Anthony M. Ponsford, Richard McKerracher, Emily Wang
  • Publication number: 20140176361
    Abstract: In one aspect, a method to identify and remove a false detection includes receiving a detection from a constant false alarm rate (CFAR) processor, performing a first similarity measure on adjacent coherent integration time values (CITs) corresponding to the detection, performing a second similarity measure on neighbor CITs corresponding to the detection, determining if at least one of the first or second similarity measure is below a threshold and discarding the detection if at least one of the first or second similarity measures is below the threshold.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 26, 2014
    Applicant: Raytheon Canada Limited
    Inventors: Reza M. Dizaji, Anthony M. Ponsford, Richard McKerracher, Emily Wang
  • Patent number: 7567203
    Abstract: A system and method for target classification for an aircraft surveillance radar is provided. In one implementation, the track classifier provides tracks with an updated probability value based on its likelihood to conform to aircraft and non-aircraft target behavior. The track classifier identifies false tracks that may arise from weather and biological targets, and can detect aircrafts lacking Secondary Surveillance Radar (SSR) data. Various features and combinations of features are evaluated using a proposed clustering performance index (CPI) and used to discriminate between aircrafts and false tracks.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: July 28, 2009
    Assignee: Raytheon Canada Limited
    Inventors: Reza M. Dizaji, Hamid Ghadaki
  • Patent number: 7151483
    Abstract: A system and corresponding method for the concurrent operation of multiple radar systems on a common frequency and in the same geographical area includes a waveform generator that specifies certain operating parameters for the transmitted radar pulses. In a first instance, the carrier frequency can include an offset for each radar system. In a second instance, complementary codes can be used for the radar pulses such that each radar system operates with a unique code for substantially reducing the cross-talk between the radar systems. In another instance, both carrier frequency offset and complementary coded waveforms can be used to increase the number of radar systems that operate concurrently. Carrier frequency offset can also be used to combat range-wrap by using different carrier frequencies for adjacent radar pulses.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: December 19, 2006
    Assignee: Raytheon Company
    Inventors: Reza M. Dizaji, Richard R. McKerracher, Anthony M. Ponsford