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Article Navigation >  Journal of University of Electronic Science and Technology of China  > 2012  >  41(3): 368-372

ZOU Lin, WANG Xue-gang. Optimized Beamforming Method of Wideband Digital Array Radar Based on Time Delay[J]. Journal of University of Electronic Science and Technology of China, 2012, 41(3): 368-372. doi: 10.3969/j.issn.1001-0548.2012.03.008
Citation: ZOU Lin, WANG Xue-gang. Optimized Beamforming Method of Wideband Digital Array Radar Based on Time Delay[J]. Journal of University of Electronic Science and Technology of China, 2012, 41(3): 368-372. doi: 10.3969/j.issn.1001-0548.2012.03.008
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Optimized Beamforming Method of Wideband Digital Array Radar Based on Time Delay

doi: 10.3969/j.issn.1001-0548.2012.03.008
  • 1.

    School of Electronic Engineering,University of Electronic Science and Technology of China Chengdu 611731

  • Received Date: 2011-12-16
  • Rev Recd Date: 2012-03-08
  • Publish Date: 2012-06-15
  • An approach of wideband beamforming to achieve accurate beam direction was pursued by the designers of the wideband digital array radar. According to the characteristics of the wideband digital array radar sampling in the Radio Frequency(RF) part, a real time and efficient digital time delay beam forming method based on the Variable Fractional Delay (VFD) filter is presented. The method proposes that the VFD filter can be integrated with the decimation anti-aliasing filter to design a dual-purpose filter and reduce the processing modules, and the polyphase structure is combined with the Farrow Structure to configure the key filter proposed above. This approach can realize the decimation and variable fractional delay in real time and achieve the accurate beam direction, which isn't affected when the signal frequency varies. The computer simulation result shows that, compared with unit delay beamforming approach, this optimized approach can improve the beam pointing accuracy effectively.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Optimized Beamforming Method of Wideband Digital Array Radar Based on Time Delay

doi: 10.3969/j.issn.1001-0548.2012.03.008
  • 1. School of Electronic Engineering,University of Electronic Science and Technology of China Chengdu 611731
  • Received Date: 2011-12-16
  • Rev Recd Date: 2012-03-08
  • Publish Date: 2012-06-15

Abstract: An approach of wideband beamforming to achieve accurate beam direction was pursued by the designers of the wideband digital array radar. According to the characteristics of the wideband digital array radar sampling in the Radio Frequency(RF) part, a real time and efficient digital time delay beam forming method based on the Variable Fractional Delay (VFD) filter is presented. The method proposes that the VFD filter can be integrated with the decimation anti-aliasing filter to design a dual-purpose filter and reduce the processing modules, and the polyphase structure is combined with the Farrow Structure to configure the key filter proposed above. This approach can realize the decimation and variable fractional delay in real time and achieve the accurate beam direction, which isn't affected when the signal frequency varies. The computer simulation result shows that, compared with unit delay beamforming approach, this optimized approach can improve the beam pointing accuracy effectively.

ZOU Lin, WANG Xue-gang. Optimized Beamforming Method of Wideband Digital Array Radar Based on Time Delay[J]. Journal of University of Electronic Science and Technology of China, 2012, 41(3): 368-372. doi: 10.3969/j.issn.1001-0548.2012.03.008
Citation: ZOU Lin, WANG Xue-gang. Optimized Beamforming Method of Wideband Digital Array Radar Based on Time Delay[J]. Journal of University of Electronic Science and Technology of China, 2012, 41(3): 368-372. doi: 10.3969/j.issn.1001-0548.2012.03.008
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