Spectrum Width Measured by WSR-88D: Error Sources and Statistics of...

Journal of Atmospheric and Oceanic Technology;  June 1, 2004 ;     700+ words ...ABSTRACT Spectrum widths, one of the...the censored spectrum width fields for...median values of spectrum widths (i.e., <...the median spectrum width values in the...Introduction Spectrum width, [sigma...1986), and spectrum width remains ...

Spectrum widths from echo power differences reveal meterological features

Journal of Atmospheric and Oceanic Technology;  November 1, 2002 ;     700+ words ...ABSTRACT A new Doppler spectrum width estimator using the...the PPL estimator. Spectrum width fields, observed when...of relatively small spectrum widths. 1. Introduction Of...central moment, the spectrum width o,, squared, is the...Doppler velocity and spectrum ...

Texas Inventor Develops Channel Spacing Tuning System

US Fed News Service, Including US State News;  August 19, 2006 ;     221 words ......system includes determining a spectrum width for a channel. A bandwidth...base channels covering the spectrum width for the channel is allocated...adjusted to correspond to the spectrum width of the channel." The inventor...

Nexrad: next generation weather radar (WSR-88D). (Weather Surveillance...

Microwave Journal;  January 1, 1990 ;     700+ words ......dispersion in the radar sample volume (spectrum width). The velocity information provides...reflectivity, the mean radial velocity and the spectrum width. The volume reflectivity is expressed...toward or away from the radar; and spectrum width is a measure of dispersion of radial...

RADAR ANALYSIS USING GR2ANALYST

Bulletin of the American Meteorological Society;  April 1, 2008 ;     700+ words ......reflectivity, radial velocity and spectrum width data produced by the National...and 0.25 km for velocity and spectrum width and azimuthal resolution is 1 for reflectivity, velocity, and spectrum width. On the other hand, Level III...

Improved Detection of Severe Storms Using Experimental Fine-Resolution...

Weather and Forecasting;  February 1, 2005 ;     700+ words ......and 0.25 km for Doppler velocity and spectrum width. To test the feasibility of improving...resolution for Doppler velocity and spectrum width. Displays of current-resolution WSR-8...data (reflectivity, Doppler velocity, spectrum width) with an azimuthal spacing of 1.0 and...

Application of the SZ phase code to mitigate range-velocity ambiguities in...

Journal of Atmospheric and Oceanic Technology;  April 1, 2002 ;     700+ words ......another) are not retrievable, and the spectrum width estimates could be severely in error...Furthermore, both the Doppler velocity and spectrum width estimates of the weaker weather signal...for Doppler velocity and 20 dB for spectrum width estimates). The relative strengths...

Whitening in Range to Improve Weather Radar Spectral Moment Estimates....

Journal of Atmospheric and Oceanic Technology;  November 1, 2003 ;     700+ words ......formulations, but again, the SNR and the spectrum width were assumed to be known. Summarizing...are only moderately complex if the spectrum width is known a priori. However, this last...signal power, mean Doppler velocity, and spectrum width would need to be calculated, which...

Cirrus Microphysical Properties and Air Motion Statistics Using Cloud...

Journal of Applied Meteorology and Climatology;  December 1, 2006 ;     700+ words ......predetermined from the Doppler spectrum width and radar reflectivity based on...velocity domain dominates the Doppler spectrum width measurement for most cirrus. It...of variables herein) or Doppler spectrum width, is a measurem

High Power, 14xx nm Pump Laser Diodes: Fitel Technologies, Inc., Clinton,...

Fiberoptic Product News;  October 1, 2001 ;     50 words ......for next generation EDFA and Raman applications. Using their proven next generation chip design and fiber bragg grating in a standard 14 pin package, Fitel's pumps achieve high power with a narrow spectrum width. * Write In 707 or Reply Online

Ground clutter canceling with a regression filter

Journal of Atmospheric and Oceanic Technology;  October 1, 1999 ;     700+ words ......power, mean Doppler velocity, and spectrum width). In most cases, ground clutter signals have a narrow spectrum width (long correlation time) compared...that power, mean velocity, and spectrum width estimates depend on the estimated...

Eddy dissipation rates in thunderstorms estimated by Doppler radar in...

Journal of Atmospheric and Oceanic Technology;  October 1, 2001 ;     700+ words ......been found for the variances. Doppler spectrum width as measured by operational weather...of aviation hazards. Part 4: Doppler spectrum width analysis. Final Report 26 April 1993-...spectra of Doppler velocities and Doppler spectrum width. J. Atmos. Oceanic Technol., 3, 440-4...

Drag-Induced Transfer of Horizontal Momentum between Air and Raindrops

Journal of the Atmospheric Sciences;  July 1, 2005 ;     700+ words ......implications for radar and aviation meteorology, where Doppler spectrum width measurements can potentially be used to detect and quantify...previous studies concerning the interpretation of Doppler spectrum width and eddy dissipation rates in precipitation environments...

Processing millimeter wave profiler radar spectra

Journal of Atmospheric and Oceanic Technology;  September 1, 2001 ;     700+ words ......sampling period can be a major contributor to the measured spectrum width. Such broadened spectra violate the assumptions made in...component during data collection contribute to the observed spectrum width similar in magnitude to the subvolume turbulence. The assumption...

Semiempirical model for the reliability of a matched filter frequency...

Journal of Atmospheric and Oceanic Technology;  January 1, 1999 ;     700+ words ......of speckles. It can deal with any signal characteristics (spectrum width, number of samples, etc.) as well as any factor of accumulation...parameters are the SNR, the main signal characteristics (spectrum width and length), and the accumulation factor. The model is derived...