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      Mode separation and direction of arrival estimation in HF links

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      Author(s)
      Arikan, F.
      Yilmaz, N.
      Arıkan, Orhan
      Miled, M. K. B. H.
      Date
      2003
      Source Title
      Radio Science
      Print ISSN
      0048-6604
      Publisher
      Wiley-Blackwell Publishing
      Volume
      38
      Issue
      1
      Pages
      7/1 - 7/14
      Language
      English
      Type
      Article
      Item Usage Stats
      223
      views
      163
      downloads
      Abstract
      Estimation of arrival angles and incoming signals is a challenging problem for HF channels where the signals are correlated and the separation between the signals can be as low as a couple of degrees. In this paper, a new algorithm, Multipath Separation- Direction of Arrival (MS-DOA), is developed to estimate both the arrival angles in elevation and azimuth and the incoming signals at the output of the reference antenna with very high accuracy. The MS-DOA algorithm provides reliable angle and signal estimates even with small separation of arrival angles and for low SNRs. The minimum number of antennas that are required by the algorithm is only one more than the number of incoming signals. In a narrowed down region of interest and for a few incoming signals, the computational search time for MS-DOA is only a couple of minutes in a Standard PC.
      Keywords
      Direction finding
      DOA estimation
      Multipath separation
      Algorithms
      Antennas
      Communication channels (information theory)
      Computer simulation
      Matrix algebra
      Radio links
      Signal to noise ratio
      Vectors
      Direction of arrival algorithm
      Direction of arrival estimation
      High frequency links
      Mode separation
      Multipath separation
      Reference antenna
      Radio direction finding systems
      Permalink
      http://hdl.handle.net/11693/24549
      Published Version (Please cite this version)
      http://dx.doi.org/10.1029/2002RS002606
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      • Department of Electrical and Electronics Engineering 4012
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