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dc.contributor.author Urco, Juan M.
dc.contributor.author Chau Chong Shing, Jorge Luis
dc.contributor.author Milla, Marco
dc.contributor.author Vierinen, Juha P.
dc.contributor.author Weber, Tobias
dc.date.accessioned 2018-08-07T13:09:41Z
dc.date.available 2018-08-07T13:09:41Z
dc.date.issued 2018
dc.identifier.citation Urco, J. M., Chau, J. L., Milla, M. A., Vierinen, J. P., & Weber, T. (2018). Coherent MIMO to improve aperture synthesis radar imaging of field-aligned irregularities: first results at Jicamarca.==$IEEE Transactions on Geoscience and Remote Sensing, 56$==(5), 2980-2990. https://doi.org/10.1109/TGRS.2017.2788425 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/2287
dc.description.abstract Multiple-input multiple-output (MIMO) radar techniques make use of multiple transmitters and multiple receivers to improve the spatial characterization of targets. In the case where the Bragg scattering k → -vector can be assumed to be the same for all transmit-receive paths, MIMO methods can be seen as a way of increasing the number of effective receivers. In the last decades, there has been scientific interest in determining the spatial characteristics of ionospheric and atmospheric irregularities on the subtransmit beam scale, allowing the study of processes in their intrinsic scales, otherwise inaccessible using simple beamforming techniques. Interferometric methods, including aperture synthesis imaging, were used in the past with a single transmitter and multiple receivers [single-input multiple-output (SIMO)]. In this paper, we present the first implementation of MIMO techniques to improve the spatial resolution of aperture synthesis radar imaging of daytime equatorial electrojet irregularities observed using the Jicamarca Radio Observatory (JRO). Our implementation uses two spatially separated transmitters and four spatially separated receivers. In order to separate the contributions of each transmitter, time, code, and polarization diversity experiments have been tested. We find that all three diversity approaches can be used for ionospheric irregularities, but time and polarization diversity are not applicable in all situations due to the range and Doppler width of the echoes, and due to magnetoionic radio propagation effects. The results are evaluated by comparing new MIMO imaging results against the currently used SIMO imaging technique. We present and discuss the theoretical and practical aspects of the MIMO approach, so they can be applied to study other targets not only at JRO but also at other modular coherent scatter radars. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Institute of Electrical and Electronics Engineers es_ES
dc.relation.ispartof urn:issn:0196-2892
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Radar imaging es_ES
dc.subject Radio transmitters es_ES
dc.subject MIMO communication es_ES
dc.subject Receivers es_ES
dc.subject Radar antennas es_ES
dc.title Coherent MIMO to improve aperture synthesis radar imaging of field-aligned irregularities: first results at Jicamarca es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.identifier.journal IEEE Transactions on Geoscience and Remote Sensing es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1109/TGRS.2017.2788425 es_ES

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