A New Portable 449-MHz Spaced Antenna Wind Profiler Radar

This paper presents the design of a 449-MHz radar for wind profiling, with a focus on modularity and solid-state transmitter design. It is one of the first wind profiler radars to use low-cost Laterally Diffused Metal Oxide Semiconductor (LDMOS) power amplifiers (PAs) combined with spaced antennas. The system is portable and designed for 2-3 month deployments. The transmitter PA consists of three 1-kW peak power modules which feed 54 antenna elements arranged in a hexagonal array, scalable directly to 126 elements. The PA is operated in pulsed mode with a 10% duty cycle at 54% power added efficiency. The antenna array is designed to have low sidelobes, confirmed by measurements. The radar was operated in Boulder, Colorado and Salt Lake City, Utah. Atmospheric wind vertical and horizontal components at altitudes between 200 m and 4 km were calculated from the collected atmospheric return signals.

[1]  Susumu Kato,et al.  The MU radar with an active phased array system: 1. Antenna and power amplifiers , 1985 .

[2]  S. N. Mitra.  A radio method of measuring winds in the ionosphere , 1949 .

[3]  Shoichiro Fukao,et al.  Sidelobe Properties of a Complementary Code Used in MST Radar Observations , 1985, IEEE Transactions on Geoscience and Remote Sensing.

[4]  R. A. Silverman,et al.  Wave Propagation in a Turbulent Medium , 1961 .

[5]  Christopher R. Williams,et al.  A Minimum Threshold for Wind Profiler Signal-to-Noise Ratios , 2012 .

[6]  T. Tsuda,et al.  Comparison of VHF Doppler beam swinging and spaced antenna observations with the MU radar: First results , 1990 .

[7]  N. L. Abshire,et al.  Preliminary Evaluation of the First NOAA Demonstration Network Wind Profiler , 1990 .

[8]  Warner L. Ecklund,et al.  A UHF Wind Profiler for the Boundary Layer: Brief Description and Initial Results , 1988 .

[9]  V. K. Anandan,et al.  An Autonomous Interference Detection and Filtering Approach Applied to Wind Profilers , 2010, IEEE Transactions on Geoscience and Remote Sensing.

[10]  S. Clifford.  Wave Propagation in a Turbulent Medium. , 1969 .

[11]  B. Briggs.  The Analysis of Spaced Sensor Records by Correlation Techniques , 1984 .

[12]  B. Candy,et al.  First results with the Adelaide VHF radar: spaced antenna studies of tropospheric winds , 1987 .

[13]  P. Hall,et al.  Handbook of microstrip antennas , 1989 .

[14]  Frederick H. Raab,et al.  Idealized operation of the class E tuned power amplifier , 1977 .

[15]  J. Giraytys.  symposium on meteorological observations and instrumentation , 1969 .

[16]  Zoya Popovic,et al.  The transmission-line high-efficiency class-E amplifier , 1995 .

[17]  C. Holloway,et al.  Validation of a UHF spaced antenna wind profiler for high‐resolution boundary layer observations , 1997 .

[18]  F. Martin Ralph,et al.  Using Radar-Measured Radial Vertical Velocities to Distinguish Precipitation Scattering from Clear-Air Scattering , 1995 .

[19]  Sebastián M. Torres,et al.  On the Use of Auxiliary Receive Channels for Clutter Mitigation With Phased Array Weather Radars , 2009, IEEE Transactions on Geoscience and Remote Sensing.

[20]  G. J. Phillips,et al.  The Analysis of Observations on Spaced Receivers of the Fading of Radio Signals , 1950 .

[21]  O. Røyrvik.  Spaced antenna drift at Jicamarca, mesospheric measurements , 1983 .

[22]  Ehmann,et al.  Advanced radar wind profiling , 2005 .

[23]  J. Nash,et al.  Development of COST 76 wind profiler network in Europe , 2001 .

[24]  Zoya Popovic,et al.  Switched-mode high-efficiency microwave power amplifiers in a free-space power-combiner array , 1998 .

[25]  Wayne K. Hocking,et al.  A review of Mesosphere–Stratosphere–Troposphere (MST) radar developments and studies, circa 1997–2008 , 2011 .

[26]  Fred Moshary,et al.  A comparison of estimated mixing height by multiple remote sensing instruments and its influence on air quality in urban regions , 2010, 2010 IEEE International Geoscience and Remote Sensing Symposium.