Results 91 to 100 of about 69,955 (288)
On the Analysis of Single-Doppler Radar Data [PDF]
Journal of Applied Meteorology, 1979 Abstract The procedures currently employed to retrieve vector wind information from single-Doppler radar observations are reviewed briefly. In particular, those procedures implying a linearity hypothesis for the wind field are shown to be particular cases of a method termed VVP (Volume Velocity Processing).
Waldteufel, Philippe, Corbin, H.
openaire +3 more sources
Distribution and size of elements of Saturn's rings as inferred from 12-cm radar observations [PDF]
A 64m radar antenna was used to observe Saturn's rings at 12.6 cm wavelength, with reduced Doppler spread. The results show a positive radar return corresponding to about a 60 percent return from an isotropic scatterer with the projected area of the ...
Morris, G. A., Jr.
core +1 more source
On the potential use of radar-derived information in operational numerical weather prediction [PDF]
, 1986 Estimates of requirements likely to be levied on a new observing system for mesoscale meteonology are given. Potential observing systems for mesoscale numerical weather prediction are discussed.
Mcpherson, R. D.
core +1 more source
An observational study of a circular gust front over the Yangtze Delta, China
Weather, EarlyView.Concentric gust fronts are formed when a thunderstorm's downdraft reaches the ground and the outflow from the cold pool spreads uniformly outwards into the surrounding warm and humid air mass. Observational evidence presented here show the case of narrow‐band echoes forming a ring around a thunderstorm.
Wenjie Zhou +6 more
wiley +1 more source
The Adelaide VHF radar: Capabilities and future plans [PDF]
The VHF radar at Buckland Park, South Australia commenced operation in January, 1984. The radar is located adjacent to the 2-MHz ionospheric radar. The routine method for measuring horizontal wind velocity is the space antenna technique (SA) while the ...
Briggs, B. H. +5 more
core +1 more source
Economical phased-array antenna for environmental applications [PDF]
, 1971 Antenna system handles data acquisition and tracking, functions as a sensitive radio telescope, and serves as a radiometer in earth atmosphere investigations. Antenna's sensitivity permits resolution of solar disk quadrants in Doppler radar observations.
Higgins, W. T.
core +1 more source
Journal of Applied Ecology, EarlyView.Through systematic review and meta‐analysis, we present a database of mean flight parameter values and uncertainty for Procellariiform species and flight groups. Flight speed and nocturnal flight parameter values are ready for use in offshore wind farm collision risk models; but flight height results are too uncertain for useful parameterization.
Mark G. R. Miller +2 more
wiley +1 more source
Sensors, 2018 Different from microwave radar, laser radar could be more sensitive to the micro-Doppler (m-D) effect due to its wave length. This limits the application of conventional methods, such as time–frequency based approach, since the processing needs a ...
Mingzhe Zhu +4 more
doaj +1 more source
Isolated REM Sleep Behaviour Disorder—Is Screening Possible?
Journal of Sleep Research, EarlyView.ABSTRACT Rapid eye movement (REM) sleep behaviour disorder (RBD) is a parasomnia characterised by the loss of muscle atonia during REM sleep and dream‐enacting behaviours. In its isolated form (iRBD) it is widely recognised as an early stage of alpha‐synucleinopathies.
Matteo Cesari +10 more
wiley +1 more source
Doppler Radar Observations of a Hailstorm [PDF]
Journal of Applied Meteorology, 1975 Abstract A severe hailstorm, occuring on 10 August 1966, passed over a zenith pointing, X-band, pulsed-Doppler radar located on a mountain in southeastern Arizona. An analysis was made of measurements of radar reflectivity, mean Doppler velocity, variance of the Doppler spectrum, and calculated updraft velocity.
openaire +2 more sources