Measurements and analysis of the radar signature of a new wind turbine design at X-band

Alessio Balleri, Allann Al-Armaghany, Hugh Griffiths, Kinfai Tong, Takashi Matsuura, Takashi Karasudani, Yuji Ohya

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14 Citations (Scopus)

Abstract

The authors study the radar signature of a new type of wind turbine, named the Wind Lens. This design includes a flanged shroud around the turbine which concentrates the wind flow past the turbine blades and hence improves the efficiency. The design also offers improved safety and reduces acoustic noise. Furthermore, it may offer a significantly lower radar signature, which may make the design much more attractive for use in situations where conventional wind turbine designs may disturb the operation of radars. The authors present the results of an experimental trial, carried out in the UK, to measure the radar cross section (RCS) of a 5 kW Wind Lens turbine prototype and provide a reference database that can be used for comparing the Wind Lens RCS with that of conventional turbines. The authors also investigate the methods to further reduce the Wind Lens RCS and present the results of a time-varying Doppler analysis. The results show that the addition of a metallic mesh around the shroud obscures the rotating blades, and hence mitigates the RCS by dB, at angles where the radar interference is highest.

Original languageEnglish
Pages (from-to)170-177
Number of pages8
JournalIET Radar, Sonar and Navigation
Volume7
Issue number2
DOIs
Publication statusPublished - Oct 22 2013

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Balleri, A., Al-Armaghany, A., Griffiths, H., Tong, K., Matsuura, T., Karasudani, T., & Ohya, Y. (2013). Measurements and analysis of the radar signature of a new wind turbine design at X-band. IET Radar, Sonar and Navigation, 7(2), 170-177. https://doi.org/10.1049/iet-rsn.2012.0026