Wind Profiler Radar Antenna Sidelobe Reduction
IEEE transactions on antennas and propagation(2014)
摘要
This paper addresses sidelobe reduction of an antenna array pattern for reducing effects of ground or sea clutter of zenith-looking wind profiler radar. Simulations are performed for various shapes of compact clutter fences for a 915-MHz Doppler radar and a 449-MHz interferometric radar. It is shown that minimal low-cost hardware modifications to existing compact ground planes of the 915-MHz radar allow for reduction of sidelobes of up to 5 dB. The results obtained on a single array are extended to a 449-MHz triple hexagonal array interferometric radar. Cross-correlation, transmit beamwidth, and sidelobe levels are evaluated for various clutter fence configurations and array spacings. The resulting sidelobes are as much as 10 dB below those without a clutter fence and can be easily incorporated into existing and future 915 and 449-MHz wind profiler systems with minimal hardware modifications.
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关键词
Clutter,Arrays,Radar antennas,Radar clutter,Antenna arrays
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