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Extending the Dynamic Range of an S-Band Radar for Cloud and Precipitation Studies

Extending the Dynamic Range of an S-Band Radar for Cloud and Precipitation Studies A new S-band vertical profiler with a coupler option for extending the dynamic range of the radar’’s receiver is discussed. The added dynamic range allows the profiler to record radar reflectivity measurements in moderate to heavy precipitation that otherwise would not have been possible with this system because of receiver saturation. The radar hardware, signal processor, and operating software are based on existing S-band and UHF profiler technology. Results from a side-by-side comparison with a calibrated Ka-band radar are used to determine the calibration and sensitivity of the S-band profiler. In a typical cloud profiling mode of operation, the sensitivity is −−14 dB Z at 10 km. Examples taken from a recent field campaign are shown to illustrate the profiler’’s ability to measure vertical velocity and radar reflectivity profiles in clouds and precipitation, with particular emphasis on the benefit provided by the coupler technology. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Atmospheric and Oceanic Technology American Meteorological Society

Extending the Dynamic Range of an S-Band Radar for Cloud and Precipitation Studies

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Publisher
American Meteorological Society
Copyright
Copyright © 1999 American Meteorological Society
ISSN
1520-0426
DOI
10.1175/1520-0426(2000)017<1226:ETDROA>2.0.CO;2
Publisher site
See Article on Publisher Site

Abstract

A new S-band vertical profiler with a coupler option for extending the dynamic range of the radar’’s receiver is discussed. The added dynamic range allows the profiler to record radar reflectivity measurements in moderate to heavy precipitation that otherwise would not have been possible with this system because of receiver saturation. The radar hardware, signal processor, and operating software are based on existing S-band and UHF profiler technology. Results from a side-by-side comparison with a calibrated Ka-band radar are used to determine the calibration and sensitivity of the S-band profiler. In a typical cloud profiling mode of operation, the sensitivity is −−14 dB Z at 10 km. Examples taken from a recent field campaign are shown to illustrate the profiler’’s ability to measure vertical velocity and radar reflectivity profiles in clouds and precipitation, with particular emphasis on the benefit provided by the coupler technology.

Journal

Journal of Atmospheric and Oceanic TechnologyAmerican Meteorological Society

Published: Sep 27, 1999

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