VHF radar interferometry measurements of vertical velocity and the effect of tilted refractivity surfaces on standard doppler measurements

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dc.contributor.authorPalmer, Robert D.
dc.contributor.authorLarsen, Miguel F.
dc.contributor.authorWoodman Pollitt, Ronald Francisco
dc.contributor.authorFukao, Shoichiro
dc.contributor.authorYamamoto, Mamoru
dc.contributor.authorTsuda, Toshitaka
dc.contributor.authorKato, Susumu
dc.date.accessioned2018-07-06T19:16:25Z
dc.date.available2018-07-06T19:16:25Z
dc.date.issued1991-03
dc.description.abstractAt 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.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationPalmer, 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. https://doi.org/10.1029/91RS00006es_ES
dc.identifier.doihttps://doi.org/10.1029/91RS00006es_ES
dc.identifier.journalRadio Sciencees_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/1749
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofurn:issn:0048-6604
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectRadares_ES
dc.subjectScatteringes_ES
dc.subjectAntennases_ES
dc.subjectDoppler effectes_ES
dc.subjectAtmospheric radio refractivityes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleVHF radar interferometry measurements of vertical velocity and the effect of tilted refractivity surfaces on standard doppler measurementses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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