Broadband constant beamwidth beamforming for suppressing mainlobe and sidelobe interferences

Shuai Li, Xiaopeng Yang, Liyue Ning, Teng Long, Tapan Kumar Sarkar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

The constant beamwidth beamforming is a key technique and research focus in the broadband array signal processing. However, most conventional methods can only satisfy constant mainlobe width and the performance will degrade severely when mainlobe and sidelobe interferences exist. To overcome this problem, a broadband constant beamwidth beamforming for suppressing mainlobe and sidelobe interferences is proposed. In the proposed method, the modified blocking matrices of different frequency bins are firstly constructed for mainlobe interference cancellation in the data domain, afterward, the minimum variance distortionless response (MVDR) beamformer and Zatman method are adopted to determine the adaptive weight vector of the reference frequency for robust interference suppression. Finally, the adaptive weight vectors of the other frequency bins are calculated using second-order cone programming (SOCP). The proposed method can form the same mainlobe width and null characteristics over the entire design frequency range. The effectiveness of the proposed method is verified by numerical simulations.

Original languageEnglish (US)
Title of host publication2017 IEEE Radar Conference, RadarConf 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1041-1045
Number of pages5
ISBN (Electronic)9781467388238
DOIs
StatePublished - Jun 7 2017
Event2017 IEEE Radar Conference, RadarConf 2017 - Seattle, United States
Duration: May 8 2017May 12 2017

Other

Other2017 IEEE Radar Conference, RadarConf 2017
CountryUnited States
CitySeattle
Period5/8/175/12/17

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Keywords

  • Constant beamwidth
  • Mainlobe and sidelobe interferences
  • Minimum variance distortionless response (MVDR)
  • Modified blocking matrices
  • Second-order cone programming (SOCP)
  • Zatman method

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing
  • Instrumentation

Cite this

Li, S., Yang, X., Ning, L., Long, T., & Sarkar, T. K. (2017). Broadband constant beamwidth beamforming for suppressing mainlobe and sidelobe interferences. In 2017 IEEE Radar Conference, RadarConf 2017 (pp. 1041-1045). [7944358] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/RADAR.2017.7944358