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      • Department of Electrical and Electronics Engineering
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      Approximate computation of DFT without performing any multiplications: application to radar signal processing

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      Author(s)
      Arslan, Musa Tunç
      Bozkurt, Alican
      Sevimli, Rasim Akın
      Akbaş, Cem Emre
      Çetin, A. Enis
      Date
      2014
      Source Title
      Proceedings of the 22nd Signal Processing and Communications Applications Conference, SIU 2014
      Publisher
      IEEE
      Pages
      850 - 853
      Language
      Turkish
      Type
      Conference Paper
      Item Usage Stats
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      127
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      Abstract
      In many radar problems it is not necessary to compute the ambiguity function in a perfect manner. In this article a new multiplication free algorithm for approximate computation of the ambiguity function is introduced. All multiplications (a × b) in the ambiguity function are replaced by an operator which computes sign(a × b)(a + b). The new transform is especially useful when the signal processing algorithm requires correlations. Ambiguity function in radar signal processing requires high number of correlations and DFT computations. This new additive operator enables an approximate computation of the ambiguity function without requiring any multiplications. Simulation examples involving passive radars are presented.
      Keywords
      Correlation
      Scattering DFT
      Correlation methods
      Radar
      Approximate computation
      Codifference
      DFT
      Nonlinear DFT
      Passive radars
      Radar signal processing
      Signal processing algorithms
      Simulation example
      Signal processing
      Permalink
      http://hdl.handle.net/11693/27508
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/SIU.2014.6830363
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      • Department of Electrical and Electronics Engineering 3702
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