This document describes techniques for enabling de-aliased imaging for a synthetic aperture radar. Radar signals processed by a synthetic aperture radar (SAR) system may include false detections in the form of aliasing induced by grating lobes. The techniques described herein can reduce the adverse effects of grating lobes by obtaining an initial SAR image using a back-projection algorithm. Aliasing effects (e.g., false detections) in this initial image may be common due to the limitations of an SAR system moving at non-uniform speeds. A refined image is produced from the initial image by applying a de-aliasing filter to the initial image. The refined image may have reduced or eliminated false detections that attribute to aliasing effects, resulting in a better representation of the environment of the vehicle.


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    Title :

    De-Aliased Imaging for a Synthetic Aperture Radar


    Contributors:
    ZHENG LE (author) / ZHANG YU (author) / ORTIZ EDGAR (author) / COLBY CLINTON (author)

    Publication date :

    2023-01-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01S RADIO DIRECTION-FINDING , Funkpeilung / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL



    Synthetic Aperture Radar Imaging Systems

    Birk | Online Contents | 1995


    Synthetic aperture radar imaging systems

    Birk, R. / Camus, W. / Valenti, E. et al. | IEEE | 1995


    Synthetic Aperture Radar Imaging Pulses

    Kelly, S I | Online Contents | 2012



    Synthetic Aperture Radar

    Doerry, A. W. / Dickey, F. M. | British Library Online Contents | 2004