×

Method and system for millimeter-wave image reconstruction

  • US 10,330,785 B2
  • Filed: 04/10/2015
  • Issued: 06/25/2019
  • Est. Priority Date: 04/14/2014
  • Status: Active Grant
First Claim
Patent Images

1. Method for reconstructing an image of an object, the object positioned adjacent a reflecting surface, comprising the steps of:

  • illuminating the object by transmitting millimeter-wave and/or micrometer-wave radiation from an array of transmitting antennas;

    detecting signals of radiation reflected by the object with an array of receiving antennas and representing the detected signals by complex-numbered measurement data;

    performing coherent processing of the measurement data by a first component of a central processing unit or a local processing unit including complex number computations for image reconstruction;

    establishing Tx subgroups of transmitting antennas for which coherent processing is performed by the local processing unit to achieve coherent subimages, whereby the Tx subgroup comprises one or more virtual transmission antennas or virtual Tx clusters resulting from the reflecting surface;

    establishing Rx subgroups of the receiving antennas, whereby the receiving antennas of each TX subgroup are located in or near the transmitting antennas of the associated TX subgroup and are configured to detect signals of radiation transmitted from the transmitting antennas of any associated Tx subgroup;

    calculating magnitude values by a second component in the central processing unit each indicative of a magnitude of a complex number to obtain a magnitude subimage for each of the coherent subimages and generating the object image by adding the magnitude subimages; and

    implementing multiple Tx clusters as a sparse array.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×