• DocumentCode
    714995
  • Title

    Using spatio-temporal coherence of HF arrays to inform receiver processing

  • Author

    Harms, Andrew ; Hickman, Granger

  • Author_Institution
    STRAD Corp., Chapel Hill, NC, USA
  • fYear
    2015
  • fDate
    10-15 May 2015
  • Firstpage
    1520
  • Lastpage
    1524
  • Abstract
    The temporal coherence across a given spatial aperture of an HF array can vary over time depending on specific ionospheric conditions. Measurement of the temporal coherence, through measurement of the correlations of eigenvector beamformer wavefronts over time, can inform the coherent integration time (CIT) that should be used in the receiver processing. We show that when the temporal coherence is small, a CIT that is too large can degrade array gain performance.
  • Keywords
    array signal processing; eigenvalues and eigenfunctions; CIT; HF arrays; array gain performance; coherent integration time; eigenvector beamformer wavefronts; spatial aperture; spatiotemporal coherence; specific ionospheric conditions; Coherence; Correlation; Gain; Manganese; Sensor arrays;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Radar Conference (RadarCon), 2015 IEEE
  • Conference_Location
    Arlington, VA
  • Print_ISBN
    978-1-4799-8231-8
  • Type

    conf

  • DOI
    10.1109/RADAR.2015.7131237
  • Filename
    7131237
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=714995