Meteorological Applications of the FM Doppler Radar, Volume 55U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, 1975 - Doppler radar - 12 pages Microwave FM-CW radars have been used for about 5 years to monitor the structure of atmospheric regions with large refractive-index fluctuations. We have recently devised a scheme that retrieves the Doppler velocity spectrum for each range resolution cell measured by an FM radar. In this paper we report initial results of meteorological measurements with this new capability and discuss its potential in remote sensing of the boundary layer. |
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15 dB m/sec antenna ATMOSPHERIC ADMINISTRATION Averaged velocity spectrum background Cn2 backscatter BOULDER clear air return Cn2 values Colorado convective boundary layer data sample Doppler Data Doppler processing Doppler spectra measured Doppler velocity spectrum drop size distributions ENVIRONMENTAL RESEARCH LABORATORIES FM Doppler radar FM radar folded range interval geophysical Ground clutter appears height resolution intensity mean velocity Microwave FM-CW radars minimum observable altitude minimum range NATIONAL OCEANIC OCEANIC AND ATMOSPHERIC pulsed Doppler radar radar pulse volume radar reflectivity radial velocity range cells range resolution cell refractive index fluctuations refractive-index fluctuations refractive-index scattering remote sensing Sample Doppler spectra shown in Fig signal frequencies greater signal spectra solely by ground spec spectra after applying spectra are averaged spectral points Strauch strong ground clutter tral troposphere velo velocity profile vertical air motion vertical velocity VHF radar Wave Propagation Laboratory weather modification wind shear zenith-pointing FM Doppler zero velocity