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Coupling compensation for unmatched circular arrays in high-frequency applications

Emadi, M ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1049/iet-rsn.2012.0012
  3. Publisher: IET , 2012
  4. Abstract:
  5. In this study, the authors perform a complete survey on S-parameter method applications to compensate the coupling effect in circular arrays. The authors illustrate that, despite the simplicity and ease of measurements, the S-parameter algorithm has an adequate performance in comparison with the external calibration techniques in real environments. Based on the simulation and experimental results, for unmatched arrays and low-frequency applications [e.g. high-frequency (HF) radars], the S-parameter method performance is demonstrated to be comparable in accuracy to the external calibration techniques. Despite multipath effect and structural scattering, the direction of arrival can be estimated by the S-parameter method with the same accuracy as obtained by the external calibration techniques, which are disadvantageously location dependent
  6. Keywords:
  7. Circular arrays ; Coupling effect ; External calibration ; High frequency HF ; High-frequency applications ; Location dependents ; Low frequency ; Multi-path effect ; Real environments ; Structural scattering ; Scattering parameters ; Parameter estimation
  8. Source: IET Radar, Sonar and Navigation ; Volume 6, Issue 8 , October , 2012 , Pages 774-780 ; 17518784 (ISSN)
  9. URL: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6323290&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6323290