Development and Initial Observation of High-Resolution Volume-Scanning Radar for Meteorological Application

A new high-resolution Doppler radar, called Ku-band broadband radar (BBR), with fast scanning capability for meteorological application has been developed. Due to the new system design, the BBR can accurately measure the radar reflectivity factor with a range resolution of several meters and a time resolution of 55 s per volume scan from the nearest range of 50 m to 15 km for 10-W power using pulse compression. In this paper, the basic concepts, configuration, and signal processing of the BBR are described. In the initial observation, the observation accuracy of reflectivity is evaluated using Joss-Waldvogel disdrometer (JWD). As a result, the reflectivity of the BBR is in fairly good agreement with that of JWD. In addition, in the spiral observation, a fine structure of a thunderstorm obtained by the BBR is presented.

[1]  R. Vogt,et al.  Agile-Beam Phased Array Radar for Weather Observations , 2007 .

[2]  Kenneth S. Gage,et al.  Vertical Structure of Precipitation and Related Microphysics Observed by NOAA Profilers and TRMM during NAME 2004 , 2007 .

[3]  Frank S. Marzano,et al.  Supervised Fuzzy-Logic Classification of Hydrometeors Using C-Band Weather Radars , 2007, IEEE Transactions on Geoscience and Remote Sensing.

[4]  Takeshi Morimoto,et al.  A Low-Power High-Resolution Broad-Band Radar Using a Pulse Compression Technique for Meteorological Application , 2007, IEEE Geoscience and Remote Sensing Letters.

[5]  Joseph T. Schaefer,et al.  A Minimum Assumption Tornado-Hazard Probability Model , 1986 .

[6]  Hiroshi Niino,et al.  A Statistical Study of Tornadoes and Waterspouts in Japan from 1961 to 1993 , 1997 .

[7]  V. Chandrasekar,et al.  Polarimetric Doppler Weather Radar: Principles and Applications , 2001 .

[8]  Tomoo Ushio,et al.  Vertical Development of Lightning Activity Observed by the LDAR System: Lightning Bubbles. , 2003 .

[9]  V. Chandrasekar,et al.  Retrieval of Reflectivity in a Networked Radar Environment , 2008 .

[10]  Tomoo Ushio,et al.  Broad band interferometric measurement of rocket triggered lightning in Japan , 1997 .

[11]  P. Ray,et al.  Broadband complex refractive indices of ice and water. , 1972, Applied optics.

[12]  V. Chandrasekar,et al.  Distributed Collaborative Adaptive radar network: Preliminary results from the CASA IP1 testbed , 2008, 2008 IEEE Radar Conference.

[13]  D. Zrnic,et al.  Doppler Radar and Weather Observations , 1984 .

[14]  Curtis R. Alexander,et al.  Centrifuging of Hydrometeors and Debris in Tornadoes: Radar-Reflectivity Patterns and Wind-Measurement Errors , 2005 .

[15]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[16]  Takeshi Morimoto,et al.  Real-Time Spectral Moments Estimation and Ground Clutter Suppression for Precipitation Radar with High Resolution , 2009, IEICE Trans. Commun..

[17]  V. Chandrasekar,et al.  Hydrometeor classification system using dual-polarization radar measurements: model improvements and in situ verification , 2005, IEEE Transactions on Geoscience and Remote Sensing.

[18]  J. D. Krauss.  Antennas For All Applications , 1950 .