Fractional fourier transform based monopulse radar for combating jamming interference

Sherif A.E.H. Elgamel, J.J. Soraghan

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Monopulse radars are used to track a target that appears in the look direction beam width. The distortion produced when manmade high power interference (jamming). Jamming scenarios are achieved by introducing high power interference to the radar processor through the radar antenna main lobe (main lobe interference) or antenna side lobe (side lobe interference). This leads to errors in the target tracking angles that may cause target mistracking. A new monopulse radar structure is presented in this paper which offers a solution to this problem. This structure is based on the use of optimal Fractional Fourier Transform (FrFT) filtering. The proposed system configurations with the optimum FrFT filters is shown to reduce the simulated interfered signal and improve the signal to noise ratio (SNR) in the processors outputs in both processor using the proposed monopulse structure.
Original languageEnglish
Number of pages5
Publication statusPublished - 29 Sep 2010
EventSensor Signal Processing for Defence 2010 - London, UK
Duration: 29 Sep 201030 Sep 2010


ConferenceSensor Signal Processing for Defence 2010
CityLondon, UK


  • fourier transform
  • monopulse radar
  • interference
  • radar


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