Mostrar el registro sencillo del ítem Palmer, Robert D. Larsen, Miguel F. Woodman Pollitt, Ronald Francisco Fukao, Shoichiro Yamamoto, Mamoru Tsuda, Toshitaka Kato, Susumu 2018-07-06T19:16:25Z 2018-07-06T19:16:25Z 1991-03
dc.identifier.citation Palmer, R. D., Larsen, M. F., Woodman, R. F., Fukao, S., Yamamoto, M., Tsuda, T., & Kato, S. (1991). VHF radar interferometry measurements of vertical velocity and the effect of tilted refractivity surfaces on standard doppler measurements.==$Radio Science, 26$==(2), 417-427. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract At VHF wavelengths, aspect sensitivity may result in an apparent beam direction that is off vertical even for a nominally vertically pointing beam direction if the refractivity surfaces responsible for the scatter are tilted with respect to the horizontal plane. Middle and upper atmosphere radar measurements obtained by using the system in a standard multireceiver configuration typical for radar interferometry (RI) and spaced antenna measurements have been analyzed for evidence of such effects. The analysis is based on the linear variation of the cross-spectral phase as a function of the radial velocity in the frequency doma.Jofor the RI cross spectra. I rue-verucal velocity escimates are obtained by using the fact that the phase difference between two antennas should be equal to zero when the echoes are being received from the vertical direction. The tilt angles of the refractivity surfaces were obtained from the phase of the cross-correlation function at zero lag, and the radial velocity in that direction was determined from the cross spectra. The results indicate that the vertical velocity derived from standard Doppler analyses is actually the velocity perpendicular to the refractivity surfaces and thus can be biased by the projection of the horizontal wind along the effective pointing direction. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:0048-6604
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Radar es_ES
dc.subject Scattering es_ES
dc.subject Antennas es_ES
dc.subject Doppler effect es_ES
dc.subject Atmospheric radio refractivity es_ES
dc.title VHF radar interferometry measurements of vertical velocity and the effect of tilted refractivity surfaces on standard doppler measurements es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.identifier.journal Radio Science es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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