A Method to Increase the Scanning Rate of Phased-Array Weather Radar

To increase the scanning rate of phased-array radar by a factor of two or more, the contiguous transmission of two or more pulses toward two or more directions and simultaneous reception of weather echoes from those directions is employed. However, if there are strong gradients of reflectivity, main...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2015-10, Vol.53 (10), p.5634-5643
Main Authors: Melnikov, V. M., Doviak, R. J., Zrnic, D. S.
Format: Article
Language:English
Subjects:
Couplings
Logic gates
Meteorological radar
Meteorology
Multiple-beam technique (MBT)
phased-array
Pollution measurement
super-fast scanning
Voltage measurement
weather radar
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Summary:To increase the scanning rate of phased-array radar by a factor of two or more, the contiguous transmission of two or more pulses toward two or more directions and simultaneous reception of weather echoes from those directions is employed. However, if there are strong gradients of reflectivity, mainlobe-to-sidelobe coupled echoes contaminate wanted mainlobe-to-mainlobe (m-m) coupled echoes and limit the accurate analysis of weather. To retrieve m-m echoes, a technique is derived that restores wanted m-m voltages for antenna sidelobe levels as high as -30 dB and the difference in echo power of 100 dB for two simultaneously sampled beam directions. The technique is demonstrated using data collected with the WSR-88D radar and simulating PAR operations.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2015.2426704