Artifact reduction within a SAR image

Title: Artifact reduction within a SAR image

Abstract

The various technologies presented herein relate to reducing and/or filtering undesired artifacts in a SAR image, wherein the artifacts are generated by RF interference resulting from a communication signal being included in a radar return which also comprises radar clutter. The radar return is separated into two subapertures, a first subaperture comprising radar clutter only, and a second subaperture comprising radar clutter and the communication signal. The communication signal is extracted from the second subaperture and reapplied to the initially received radar return. Reapplication of the communication signal to the radar return enables any undesired artifacts arising from the communication signal to have their return strength reduced or minimized, while maintaining any desired radar returns in the SAR image.

Inventors:: Musgrove, Cameron; Naething, Richard M.; Ormesher, Richard C.

Issue Date:: 2018-07-10

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1462945

Patent Number(s):: 10018718

Application Number:: 14/927,130

Assignee:: National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING

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G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G01S13/904 - {SAR modes}
G01S7/023 - {interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
G01S7/414 - {Discriminating targets with respect to background clutter}
G01S7/292 - Extracting wanted echo-signals

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DOE Contract Number:: AC04-94AL85000

Resource Type:: Patent

Resource Relation:: Patent File Date: 2015 Oct 29

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Citation Formats


                    Musgrove, Cameron, Naething, Richard M., and Ormesher, Richard C. Artifact reduction within a SAR image.  United States: N. p., 2018. 
        Web.

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                    Musgrove, Cameron, Naething, Richard M., & Ormesher, Richard C. Artifact reduction within a SAR image.  United States.

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                    Musgrove, Cameron, Naething, Richard M., and Ormesher, Richard C. Tue .  
        "Artifact reduction within a SAR image".  United States.  https://www.osti.gov/servlets/purl/1462945.

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@article{osti_1462945,

  title        = {Artifact reduction within a SAR image},

  author       = {Musgrove, Cameron and Naething, Richard M. and Ormesher, Richard C.},

  abstractNote = {The various technologies presented herein relate to reducing and/or filtering undesired artifacts in a SAR image, wherein the artifacts are generated by RF interference resulting from a communication signal being included in a radar return which also comprises radar clutter. The radar return is separated into two subapertures, a first subaperture comprising radar clutter only, and a second subaperture comprising radar clutter and the communication signal. The communication signal is extracted from the second subaperture and reapplied to the initially received radar return. Reapplication of the communication signal to the radar return enables any undesired artifacts arising from the communication signal to have their return strength reduced or minimized, while maintaining any desired radar returns in the SAR image.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2018},

  month        = {7}

}

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Similar Records

Title: Artifact reduction within a SAR image

Abstract

Citation Formats

Methods and system suppressing clutter in a gain-block, radar-responsive tag system patent, April 2006

Clutter Reduction for Synthetic Aperture Radar Imagery Based on Adaptive Wavelet Packet Transform journal, January 2000

Vehicle communication network patent-application, January 2002

Radar transponder apparatus and signal processing technique patent, January 1996

Transponder having high phase stability, particularly for synthetic aperture radar, or sar, systems patent, March 2005

Synthetic aperture radar (SAR) imaging system patent, October 2010

Clutter free communications radar patent, August 1978

IFF system including a low radar cross-section synthetic aperture radar (SAR) patent, June 1998

Multi-channel moving target radar detection and imaging apparatus and method patent, June 2002

Transponder data processing methods and systems patent, June 2003

Method and system for communicating using pulsed radar signal data links patent, April 2009

Synthetic aperture radar clutter reduction system patent, August 1996

Radio tag for LFM radar patent, September 2004

Subaperture processing for clutter reduction in synthetic aperture radar images of ground moving targets patent, July 2002

Methods and system suppressing clutter in a gain-block, radar-responsive tag system
patent, April 2006

Clutter Reduction for Synthetic Aperture Radar Imagery Based on Adaptive Wavelet Packet Transform
journal, January 2000

Vehicle communication network
patent-application, January 2002

Radar transponder apparatus and signal processing technique
patent, January 1996

Transponder having high phase stability, particularly for synthetic aperture radar, or sar, systems
patent, March 2005

Synthetic aperture radar (SAR) imaging system
patent, October 2010

Clutter free communications radar
patent, August 1978

IFF system including a low radar cross-section synthetic aperture radar (SAR)
patent, June 1998

Multi-channel moving target radar detection and imaging apparatus and method
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patent, April 2009

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patent, August 1996

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patent, September 2004

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patent, July 2002