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Compensation of radome effects in small airborne monopulse arrays by convex optimization
KTH, School of Electrical Engineering and Computer Science (EECS), Electromagnetic Engineering.ORCID iD: 0000-0001-7269-5241
2018 (English)In: IET Conference Publications, Institution of Engineering and Technology , 2018, no CP741Conference paper, Published paper (Refereed)
Abstract [en]

The quality of small array antennas in airborne monopulse systems can be significantly reduced by the radome. We therefore present a convex optimization approach to minimize radome effects in monopulse arrays. This is achieved by using active element patterns in the optimization to determine the excitation weights. Simulation results for a BoR array with 48 elements and an extended hemispherical radome are presented. We demonstrate that it is possible to reduce the side-lobe level by 3.5 dB by taking radome effects into account in the optimization. This approach also results in an increased gain, particularly at large scan angles. Furthermore, the presented approach allows the monopulse slope to be indirectly specified as a design parameter. It is shown that the trade-off between the monopulse slope coefficient and the side-lobe level is approximately linear.

Place, publisher, year, edition, pages
Institution of Engineering and Technology , 2018. no CP741
Keywords [en]
Airborne ESM, Convex optimization, Monoulse DOA estimation, Phased array antennas, Radomes, Economic and social effects, Active element patterns, Design parameters, DOA estimation, Large scan angle, Optimization approach, Sidelobe levels, Antenna phased arrays
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-247468Scopus ID: 2-s2.0-85057296300OAI: oai:DiVA.org:kth-247468DiVA, id: diva2:1302673
Conference
12th European Conference on Antennas and Propagation, EuCAP 2018, 9 April 2018 through 13 April 2018
Note

QC 20190405

Available from: 2019-04-05 Created: 2019-04-05 Last updated: 2019-05-21Bibliographically approved

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Frid, HenrikJonsson, B. Lars G.

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
  • text
  • asciidoc
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