Co-notch and independent windowing to mitigate interference in SAR-based imagery

Musgrove, Cameron; Riley, Robert E.; West, James C.

Title: Co-notch and independent windowing to mitigate interference in SAR-based imagery

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Abstract

Various technologies for mitigating distortion in coherent image products generated from SAR data are described herein. Synthetic aperture radar (SAR) datasets generated based upon SAR returns from first and second passes of a SAR platform over a scene are received. The SAR datasets can be co-notched at matching sample indices to improve coherence of SAR images generated from the datasets. Windowed SAR data is generated by applying independent windows to subsets of each of the datasets to reduce sidelobe levels of their image impulse responses. Coherent image products are generated based upon the windowed SAR data, wherein an image quality of the coherent image products is improved as compared to coherent image products generated based upon the SAR datasets.

Inventors:: Musgrove, Cameron; Riley, Robert E.; West, James C.

Issue Date:: 2020-03-17

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

Sponsoring Org.:: USDOE

OSTI Identifier:: 1637834

Patent Number(s):: 10591582

Application Number:: 15/354,033

Assignee:: National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM); West, James C., Stillwater, OK (United States)

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

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G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
G01S13/9023 - {combined with interferometric techniques}
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
G01S13/90 - using synthetic aperture techniques {, e.g. synthetic aperture radar [SAR] techniques}

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DOE Contract Number:: AC04-94AL85000

Resource Type:: Patent

Resource Relation:: Patent File Date: 11/17/2016

Country of Publication:: United States

Language:: English

Citation Formats


                    Musgrove, Cameron, Riley, Robert E., and West, James C. Co-notch and independent windowing to mitigate interference in SAR-based imagery.  United States: N. p., 2020. 
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                    Musgrove, Cameron, Riley, Robert E., & West, James C. Co-notch and independent windowing to mitigate interference in SAR-based imagery.  United States.

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                    Musgrove, Cameron, Riley, Robert E., and West, James C. Tue .  
        "Co-notch and independent windowing to mitigate interference in SAR-based imagery".  United States.  https://www.osti.gov/servlets/purl/1637834.

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@article{osti_1637834,

  title        = {Co-notch and independent windowing to mitigate interference in SAR-based imagery},

  author       = {Musgrove, Cameron and Riley, Robert E. and West, James C.},

  abstractNote = {Various technologies for mitigating distortion in coherent image products generated from SAR data are described herein. Synthetic aperture radar (SAR) datasets generated based upon SAR returns from first and second passes of a SAR platform over a scene are received. The SAR datasets can be co-notched at matching sample indices to improve coherence of SAR images generated from the datasets. Windowed SAR data is generated by applying independent windows to subsets of each of the datasets to reduce sidelobe levels of their image impulse responses. Coherent image products are generated based upon the windowed SAR data, wherein an image quality of the coherent image products is improved as compared to coherent image products generated based upon the SAR datasets.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {3}

}

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